METHOD FOR COMMODITIES HEDGING IS NOT ELIGIBLE FOR PATENT.

Raymond T. Chen, Associate Solicitor, Office of the Solicitor, United States Patent and Trademark Office, of Arlington, Virginia, argued for the Director of the United States Patent and Trademark Office. With him on the brief were James A. Toupin, General Counsel, Stephen Walsh, Acting Solicitor, and Thomas W. Krause, Associate Solicitor. Of counsel on the brief were Jeffrey S. Bucholtz, Acting Assistant Attorney General, John J. Fargo, Director, Intellectual Property Staff, Commercial Branch, and Scott R. McIntosh and Mark R. Freeman, Attorneys, Appellate Staff, Civil Division, United States Department of Justice, of Washington, DC.

John F. Duffy, Fried, Frank, Harris, Shriver & Jacobson LLP, of Washington, DC, argued for amicus curiae Regulatory Datacorp, Inc. Of counsel on the brief were Thomas S. Biemer, Steven I. Wallach, and Philip J. Foret, Dilworth Paxson LLP, of Philadelphia, Pennsylvania; and John A. Squires, Goldman, Sachs & Co., of New York, New York.

William F. Lee, Wilmer Cutler Pickering Hale and Dorr LLP, of Boston, Massachusetts, argued for amici curiae Financial Services Industry, Bank of America, et al., and for all other amici. With him on the brief for Financial Services Industry, Bank of America, et al., were Randolph D. Moss, Donald R. Steinberg, and Felicia H. Ellsworth, and Seth P. Waxman, of Washington, DC.

J. Michael Jakes, Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P., of Washington, DC, for amicus curiae Accenture. With him on the brief were Erika H. Arner and Ronald E. Myrick, and Denise W. DeFranco, of Cambridge, Massachusetts. Of counsel on the brief was Wayne P. Sobon, Accenture, of San Jose, California.

Christopher A. Hansen, American Civil Liberties Union Foundation, of New York, New York, for amicus curiae American Civil Liberties Union.

Kenneth C. Bass, III, Sterne, Kessler, Goldstein & Fox P.L.L.C., of Washington, DC, for amicus curiae American Express Company. With him on the brief were Robert Greene Sterne and Michelle K. Holoubek. Of counsel on the brief was Maxine Y. Graham, American Express Company, of New York, New York.

Kelsey I. Nix, Willkie Farr & Gallagher LLP, of New York, New York, for amicus curiae American Institute of Certified Public Accountants. With him on the brief was Heather M. Schneider.

Meredith Martin Addy, Brinks Hofer Gilson & Lione, of Chicago, Illinois, for amicus curiae American Intellectual Property Law Association. With her on the briefs was Charles M. McMahon. Of counsel on the briefs were James Pooley and Judith M. Saffer, American Intellectual Property Law Association, of Arlington, Virginia, and Denise W. DeFranco, Barbara A. Fiacco, James M. Flaherty, Jr., and Miriam Pogach, Foley Hoag LLP, of Boston, Massachusetts.

Joseph A. Keyes, Jr., Association of American Medical Colleges, of Washington, DC, for amicus curiae Association of American Medical Colleges.

Nancy J. Linck, Rothwell, Figg, Ernst & Manbeck, of Washington, DC, for amicus curiae Biotechnology Industry Organization. With her on the brief were Minaksi Bhatt and R. Elizabeth Brenner-Leifer. Of counsel on the brief was Hans Sauer, Biotechnology Industry Organization, of Washington, DC.

Erik P. Belt, Bromberg and Sunstein LLP, of Boston, Massachusetts, for amicus curiae Boston Patent Law Association. With him on the brief were John J. Stickevers and Jakub M. Michna. Of counsel on the brief were Robert M. Abrahamsen, Steven J. Henry, and Ilan N. Barzilay, Wolf, Greenfield and Sacks, P.C., of Boston, Massachusetts.

Andrew J. Pincus, Mayer Brown LLP, of Washington, DC, for amicus curiae The Business Software Alliance. With him on the brief were Dan Himmelfarb and Brian D. Netter.

Richard H. Stern, Kellogg, Huber, Hansen, Todd, Evans & Figel, P.L.L.C., of Washington, DC, for amicus curiae Center for Advanced Study and Research on Intellectual Property of the University of Washington School of Law.

Dean Alderucci, CFPH, LLC, of New York, New York, for amicus curiae CFPH, LLC.

Matthew Schruers, Computer & Communications Industry Association, of Washington, DC, for amicus curiae Computer & Communications Industry Association.

Jason M. Schultz, University of California Berkeley School of Law, of Berkeley, California, for amici curiae Consumers Union, et al.

Carter G. Phillips, Sidley Austin LLP, of Washington, DC, for amici curiae Dell Inc., et al. With him on the brief were Jeffrey P. Kushan, and Constantine L. Trela, Jr. and Richard A. Cederoth, of Chicago, Illinois.

James J. Kelley, Eli Lilly and Company, of Indianapolis, Indiana, for amicus curiae Eli Lilly and Company. With him on the brief were Robert A. Armitage and Alexander Wilson.

Jerry Cohen, Burns & Levinson, LLP, of Boston, Massachusetts, for amicus curiae End Software Patents.

Michael J. Songer, Crowell & Moring, LLP, of Washington, DC, for amicus curiae Federal Circuit Bar Association. Of counsel on the brief was Edward R. Reines, Federal Circuit Bar Association, of Washington, DC.

Maxim H. Waldbaum, Schiff Hardin LLP, of New York, New York, for amicus curiae Fédération Internationale Des Conseils En Propriété Industrielle.

Michael R. McCarthy, Parsons Behle & Latimer, of Salt Lake City, Utah, for amicus curiae Professor Lee A. Hollaar.

Howard L. Speight, of Houston, Texas, for amicus curiae Houston Intellectual Property Law Association.

Eric E. Bensen, Paul, Hastings, Janofsky & Walker LLP, of New York, New York, for amicus curiae Intellectual Property Owners Association. Of counsel on the brief were Robert P. Hayter and Steven W. Miller, Intellectual Property Owners Association, of Washington, DC. Of counsel was Herbert C. Wamsley, Intellectual Property Owners Association, of Washington, DC.

Christopher Landau, Kirkland & Ellis LLP, of Washington, DC, for amicus curiae International Business Machines Corporation. With him on the brief were Gregory S. Arovas and Timothy K. Gilman, of New York, New York. Of counsel on the brief were David J. Kappos, IBM Corporation, of Armonk, New York, and John R. Thomas, Georgetown University Law Center, of Washington, DC.

Jack E. Haken, Philips Intellectual Property and Standards, of Briarcliff Manor, New York, for amicus curiae Koninklijke Philips Electronics N.V. With him on the brief was Todd Holmbo.

Mark A. Lemley, Stanford Law School, of Stanford, California, for amici curiae law professors John R. Allison, et al. Of counsel on the brief were Michael Risch, West Virginia University College of Law, of Morgantown, West Virginia, and R. Polk Wagner, University of Pennsylvania Law School, of Philadelphia, Pennsylvania.

Joshua D. Sarnoff, Washington College of Law, American University, of Washington, DC, for amici curiae law professors Ralph D. Clifford, et al.

Todd L. Juneau, Juneau Partners Patent & Trademark Firm, PLLC, of Alexandria, Virginia, for amicus curiae Jason V. Morgan.

James R. Myers, Ropes & Gray LLP, of Washington, DC, for amici curiae Pacific Life Insurance Company, et al. With him on the brief was Brandon H. Stroy, of New York, New York.

Robert H. Tiller, Red Hat, Inc., of Raleigh, North Carolina, for amicus curiae Red Hat, Inc. With him on the brief was Richard E. Fontana.

Charles R. Macedo, Amster, Rothstein & Ebenstein LLP, of New York, New York, for amici curiae Reserve Management Corporation, et al. With him on the brief were Anthony F. Lo Cicero and Jung S. Hahm.

Katherine K. Lutton, Fish & Richardson P.C., of Redwood City, California, for amicus curiae SAP America, Inc. With her on the brief were John A. Dragseth, of Minneapolis, Minnesota, and Christian A. Chu, of Washington, DC. Of counsel on the brief were Kevin R. Hamel and Gerard Wissing, SAP America, Inc., of Newtown Square, Pennsylvania.

Scott E. Bain, Software & Information Industry Association, of Washington, DC, for amicus curiae Software & Information Industry Association.

Michael J. Swope, Woodcock Washburn LLP, of Seattle, Washington, for amicus curiae Washington State Patent Law Association. With him on the brief was Grzegorz S. Plichta. Of counsel on the brief were Peter J. Knudsen, Nastech Pharmaceutical Co., Inc., of Bothell, Washington, and Dale C. Barr, Washington State Patent Law Association, of Seattle, Washington.

R. Carl Moy, William Mitchell College of Law, of St. Paul, Minnesota, for amicus curiae William Mitchell College of Law Intellectual Property Institute. With him on the brief was Jay A. Erstling.

Christopher J. Wright, Harris, Wiltshire & Grannis LLP, of Washington, DC, for amici curiae Yahoo! Inc., et al. With him on the brief were Timothy J. Simeone and Joseph C. Cavender.

Gregory Aharonian, of San Francisco, California, as amicus curiae, pro se.

Kevin Emerson Collins, Indiana University School of Law, Bloomington, of Bloomington, Indiana, as amicus curiae, pro se.

Roberta J. Morris, of Menlo Park, California, as amicus curiae, pro se.

Appealed from:

Opinion for the court filed by Chief Judge MICHEL, in which Circuit Judges LOURIE, SCHALL, BRYSON, GAJARSA, LINN, DYK, PROST, and MOORE join. Concurring opinion filed by Circuit Judge DYK, in which Circuit Judge LINN joins. Dissenting opinion filed by Circuit Judge NEWMAN. Dissenting opinion filed by Circuit Judge MAYER. Dissenting opinion filed by Circuit Judge RADER.

MICHEL, Chief Judge.

Bernard L. Bilski and Rand A. Warsaw (collectively, "Applicants") appeal from the final decision of the Board of Patent Appeals and Interferences ("Board") sustaining the rejection of all eleven claims of their U.S. Patent Application Serial No. 08/833,892 ("'892 application"). See Ex parte Bilski, No. 2002-2257, 2006 WL 5738364 (B.P.A.I. Sept. 26, 2006) ("Board Decision"). Specifically, Applicants argue that the examiner erroneously rejected the claims as not directed to patent-eligible subject matter under 35 U.S.C. § 101, and that the Board erred in upholding that rejection. The appeal was originally argued before a panel of the court on October 1, 2007. Prior to disposition by the panel, however, we sua sponte ordered en banc review. Oral argument before the en banc court was held on May 8, 2008. We affirm the decision of the Board because we conclude that Applicants' claims are not directed to patent-eligible subject matter, and in doing so, we clarify the standards applicable in determining whether a claimed method constitutes a statutory "process" under § 101.

The examiner ultimately rejected claims 1-11 under 35 U.S.C. § 101, stating: "[r]egarding . . . claims 1-11, the invention is not implemented on a specific apparatus and merely manipulates [an] abstract idea and solves a purely mathematical problem without any limitation to a practical application, therefore, the invention is not directed to the technological arts." See Board Decision, slip op. at 3. The examiner noted that Applicants had admitted their claims are not limited to operation on a computer, and he concluded that they were not limited by any specific apparatus. See id. at 4.

On appeal, the Board held that the examiner erred to the extent he relied on a "technological arts" test because the case law does not support such a test. Id. at 41-42. Further, the Board held that the requirement of a specific apparatus was also erroneous because a claim that does not recite a specific apparatus may still be directed to patent-eligible subject matter "if there is a transformation of physical subject matter from one state to another." Id. at 42. Elaborating further, the Board stated: "'mixing' two elements or compounds to produce a chemical substance or mixture is clearly a statutory transformation although no apparatus is claimed to perform the step and although the step could be performed manually." Id. But the Board concluded that Applicants' claims do not involve any patent-eligible transformation, holding that transformation of "non-physical financial risks and legal liabilities of the commodity provider, the consumer, and the market participants" is not patent-eligible subject matter. Id. at 43. The Board also held that Applicants' claims "preempt[] any and every possible way of performing the steps of the [claimed process], by human or by any kind of machine or by any combination thereof," and thus concluded that they only claim an abstract idea ineligible for patent protection. Id. at 46-47. Finally, the Board held that Applicants' process as claimed did not produce a "useful, concrete and tangible result," and for this reason as well was not drawn to patent-eligible subject matter. Id. at 49-50.

Applicants timely appealed to this court under 35 U.S.C. § 141. We have jurisdiction under 28 U.S.C. § 1295(a)(4)(A).

As several amici have argued, the term "process" is ordinarily broad in meaning, at least in general lay usage. In 1952, at the time Congress amended § 101 to include "process,"⁴ the ordinary meaning of the term was: "[a] procedure . . . [a] series of actions, motions, or operations definitely conducing to an end, whether voluntary or involuntary." WEBSTER'S NEW INTERNATIONAL DICTIONARY OF THE ENGLISH LANGUAGE 1972 (2d ed. 1952). There can be no dispute that Applicants' claim would meet this definition of "process." But the Supreme Court has held that the meaning of "process" as used in § 101 is narrower than its ordinary meaning. See Flook, 437 U.S. at 588-89 ("The holding [in Benson] forecloses a purely literal reading of § 101."). Specifically, the Court has held that a claim is not a patent-eligible "process" if it claims "laws of nature, natural phenomena, [or] abstract ideas." Diamond v. Diehr, 450 U.S. 175, 185 (1981) (citing Flook, 437 U.S. at 589, and Gottschalk v. Benson, 409 U.S. 63, 67 (1972)). Such fundamental principles⁵ are "part of the storehouse of knowledge of all men . . . free to all men and reserved exclusively to none." Funk Bros. Seed Co. v. Kalo Inoculant Co., 333 U.S. 127, 130 (1948); see also Le Roy v. Tatham, 55 U.S. (14 How.) 156, 175 (1852) ("A principle, in the abstract, is a fundamental truth; an original cause; a motive; these cannot be patented, as no one can claim in either of them an exclusive right."). "Phenomena of nature, though just discovered, mental processes, and abstract intellectual concepts are not patentable, as they are the basic tools of scientific and technological work." Benson, 409 U.S. at 67; see also Comiskey, 499 F.3d at 1378-79 (holding that "mental processes," "processes of human thinking," and "systems that depend for their operation on human intelligence alone" are not patent-eligible subject matter under Benson).

The true issue before us then is whether Applicants are seeking to claim a fundamental principle (such as an abstract idea) or a mental process. And the underlying legal question thus presented is what test or set of criteria governs the determination by the Patent and Trademark Office ("PTO") or courts as to whether a claim to a process is patentable under § 101 or, conversely, is drawn to unpatentable subject matter because it claims only a fundamental principle.

The Supreme Court last addressed this issue in 1981 in Diehr, which concerned a patent application seeking to claim a process for producing cured synthetic rubber products. 450 U.S. at 177-79. The claimed process took temperature readings during cure and used a mathematical algorithm, the Arrhenius equation, to calculate the time when curing would be complete. Id. Noting that a mathematical algorithm alone is unpatentable because mathematical relationships are akin to a law of nature, the Court nevertheless held that the claimed process was patent-eligible subject matter, stating:

The Court in Diehr thus drew a distinction between those claims that "seek to pre-empt the use of" a fundamental principle, on the one hand, and claims that seek only to foreclose others from using a particular "application" of that fundamental principle, on the other. 450 U.S. at 187. Patents, by definition, grant the power to exclude others from practicing that which the patent claims. Diehr can be understood to suggest that whether a claim is drawn only to a fundamental principle is essentially an inquiry into the scope of that exclusion; i.e., whether the effect of allowing the claim would be to allow the patentee to pre-empt substantially all uses of that fundamental principle. If so, the claim is not drawn to patent-eligible subject matter.

In Diehr, the Court held that the claims at issue did not pre-empt all uses of the Arrhenius equation but rather claimed only "a process for curing rubber . . . which incorporates in it a more efficient solution of the equation." 450 U.S. at 188. The process as claimed included several specific steps to control the curing of rubber more precisely: "These include installing rubber in a press, closing the mold, constantly determining the temperature of the mold, constantly recalculating the appropriate cure time through the use of the formula and a digital computer, and automatically opening the press at the proper time." Id. at 187. Thus, one would still be able to use the Arrhenius equation in any process not involving curing rubber, and more importantly, even in any process to cure rubber that did not include performing "all of the other steps in their claimed process." See id.; see also Tilghman v. Proctor, 102 U.S. 707, 729 (1880) (holding patentable a process of breaking down fat molecules into fatty acids and glycerine in water specifically requiring both high heat and high pressure since other processes, known or as yet unknown, using the reaction of water and fat molecules were not claimed).

In contrast to Diehr, the earlier Benson case presented the Court with claims drawn to a process of converting data in binary-coded decimal ("BCD") format to pure binary format via an algorithm programmed onto a digital computer. Benson, 409 U.S. at 65. The Court held the claims to be drawn to unpatentable subject matter:

The question before us then is whether Applicants' claim recites a fundamental principle and, if so, whether it would pre-empt substantially all uses of that fundamental principle if allowed. Unfortunately, this inquiry is hardly straightforward. How does one determine whether a given claim would pre-empt all uses of a fundamental principle? Analogizing to the facts of Diehr or Benson is of limited usefulness because the more challenging process claims of the twenty-first century are seldom so clearly limited in scope as the highly specific, plainly corporeal industrial manufacturing process of Diehr; nor are they typically as broadly claimed or purely abstract and mathematical as the algorithm of Benson.

The Supreme Court, however, has enunciated a definitive test to determine whether a process claim is tailored narrowly enough to encompass only a particular application of a fundamental principle rather than to pre-empt the principle itself. A claimed process is surely patent-eligible under § 101 if: (1) it is tied to a particular machine or apparatus, or (2) it transforms a particular article into a different state or thing. See Benson, 409 U.S. at 70 ("Transformation and reduction of an article 'to a different state or thing' is the clue to the patentability of a process claim that does not include particular machines."); Diehr, 450 U.S. at 192 (holding that use of mathematical formula in process "transforming or reducing an article to a different state or thing" constitutes patent-eligible subject matter); see also Flook, 437 U.S. at 589 n.9 ("An argument can be made [that the Supreme] Court has only recognized a process as within the statutory definition when it either was tied to a particular apparatus or operated to change materials to a 'different state or thing'"); Cochrane v. Deener, 94 U.S. 780, 788 (1876) ("A process is . . . an act, or a series of acts, performed upon the subject-matter to be transformed and reduced to a different state or thing.").⁷ A claimed process involving a fundamental principle that uses a particular machine or apparatus would not pre-empt uses of the principle that do not also use the specified machine or apparatus in the manner claimed. And a claimed process that transforms a particular article to a specified different state or thing by applying a fundamental principle would not pre-empt the use of the principle to transform any other article, to transform the same article but in a manner not covered by the claim, or to do anything other than transform the specified article.

The process claimed in Diehr, for example, clearly met both criteria. The process operated on a computerized rubber curing apparatus and transformed raw, uncured rubber into molded, cured rubber products. Diehr, 450 U.S. at 184, 187. The claim at issue in Flook, in contrast, was directed to using a particular mathematical formula to calculate an "alarm limit" -- a value that would indicate an abnormal condition during an unspecified chemical reaction. 437 U.S. at 586. The Court rejected the claim as drawn to the formula itself because the claim did not include any limitations specifying "how to select the appropriate margin of safety, the weighting factor, or any of the other variables . . . the chemical processes at work, the [mechanism for] monitoring of process variables, or the means of setting off an alarm or adjusting an alarm system." See id. at 586, 595. The claim thus was not limited to any particular chemical (or other) transformation; nor was it tied to any specific machine or apparatus for any of its process steps, such as the selection or monitoring of variables or the setting off or adjusting of the alarm.⁸See id.

A canvas of earlier Supreme Court cases reveals that the results of those decisions were also consistent with the machine-or-transformation test later articulated in Benson and reaffirmed in Diehr. See Tilghman, 102 U.S. at 729 (particular process of transforming fats into constituent compounds held patentable); Cochrane, 94 U.S. at 785-88 (process transforming grain meal into purified flour held patentable); Morse, 56 U.S. (15 How.) at 113 (process of using electromagnetism to print characters at a distance that was not transformative or tied to any particular apparatus held unpatentable). Interestingly, Benson presents a difficult case under its own test in that the claimed process operated on a machine, a digital computer, but was still held to be ineligible subject matter.⁹ However, in Benson, the limitations tying the process to a computer were not actually limiting because the fundamental principle at issue, a particular algorithm, had no utility other than operating on a digital computer. Benson, 409 U.S. at 71-72. Thus, the claim's tie to a digital computer did not reduce the pre-emptive footprint of the claim since all uses of the algorithm were still covered by the claim.

We recognize, however, that the Court was initially equivocal in first putting forward this test in Benson. As the Applicants and several amici point out, the Court there stated:

Nevertheless, we agree that future developments in technology and the sciences may present difficult challenges to the machine-or-transformation test, just as the widespread use of computers and the advent of the Internet has begun to challenge it in the past decade. Thus, we recognize that the Supreme Court may ultimately decide to alter or perhaps even set aside this test to accommodate emerging technologies. And we certainly do not rule out the possibility that this court may in the future refine or augment the test or how it is applied. At present, however, and certainly for the present case, we see no need for such a departure and reaffirm that the machine-or-transformation test, properly applied, is the governing test for determining patent eligibility of a process under § 101.¹²

The Diehr Court also reaffirmed a second corollary to the machine-or-transformation test by stating that "insignificant post-solution activity will not transform an unpatentable principle into a patentable process." Id. at 191-92; see also Flook, 437 U.S. at 590 ("The notion that post-solution activity, no matter how conventional or obvious in itself, can transform an unpatentable principle into a patentable process exalts form over substance."). The Court in Flook reasoned:

Second, the Court has made clear that it is inappropriate to determine the patent-eligibility of a claim as a whole based on whether selected limitations constitute patent-eligible subject matter. Flook, 437 U.S. at 594 ("Our approach to respondent's application is, however, not at all inconsistent with the view that a patent claim must be considered as a whole."); Diehr, 450 U.S. at 188 ("It is inappropriate to dissect the claims into old and new elements and then to ignore the presence of the old elements in the analysis."). After all, even though a fundamental principle itself is not patent-eligible, processes incorporating a fundamental principle may be patent-eligible. Thus, it is irrelevant that any individual step or limitation of such processes by itself would be unpatentable under § 101. See In re Alappat, 33 F.3d 1526, 1543-44 (Fed. Cir. 1994) (en banc) (citing Diehr, 450 U.S. at 187).

Some may question the continued viability of this test, arguing that it appears to conflict with the Supreme Court's proscription against dissecting a claim and evaluating patent-eligibility on the basis of individual limitations. See Flook, 437 U.S. at 594 (requiring analysis of claim as a whole in § 101 analysis); see also AT&T, 172 F.3d at 1359; State St., 149 F.3d at 1374. In light of the present opinion, we conclude that the Freeman-Walter-Abele test is inadequate. Indeed, we have already recognized that a claim failing that test may nonetheless be patent-eligible. See In re Grams, 888 F.2d 835, 838-39 (Fed. Cir. 1989). Rather, the machine-or-transformation test is the applicable test for patent-eligible subject matter.¹⁷

The second articulation we now revisit is the "useful, concrete, and tangible result" language associated with State Street, although first set forth in Alappat. State St., 149 F.3d at 1373 ("Today, we hold that the transformation of data, representing discrete dollar amounts, by a machine through a series of mathematical calculations into a final share price, constitutes a [patent-eligible invention] because it produces 'a useful, concrete and tangible result'. . . .");¹⁸Alappat, 33 F.3d at 1544 ("This is not a disembodied mathematical concept which may be characterized as an 'abstract idea,' but rather a specific machine to produce a useful, concrete, and tangible result."); see also AT&T, 172 F.3d at 1357 ("Because the claimed process applies the Boolean principle to produce a useful, concrete, tangible result without pre-empting other uses of the mathematical principle, on its face the claimed process comfortably falls within the scope of § 101."). The basis for this language in State Street and Alappat was that the Supreme Court has explained that "certain types of mathematical subject matter, standing alone, represent nothing more than abstract ideas until reduced to some type of practical application." Alappat, 33 F.3d at 1543; see also State St., 149 F.3d at 1373. To be sure, a process tied to a particular machine, or transforming or reducing a particular article into a different state or thing, will generally produce a "concrete" and "tangible" result as those terms were used in our prior decisions. But while looking for "a useful, concrete and tangible result" may in many instances provide useful indications of whether a claim is drawn to a fundamental principle or a practical application of such a principle, that inquiry is insufficient to determine whether a claim is patent-eligible under § 101. And it was certainly never intended to supplant the Supreme Court's test. Therefore, we also conclude that the "useful, concrete and tangible result" inquiry is inadequate and reaffirm that the machine-or-transformation test outlined by the Supreme Court is the proper test to apply.¹⁹

We next turn to the so-called "technological arts test" that some amici²⁰ urge us to adopt. We perceive that the contours of such a test, however, would be unclear because the meanings of the terms "technological arts" and "technology" are both ambiguous and ever-changing.²¹ And no such test has ever been explicitly adopted by the Supreme Court, this court, or our predecessor court, as the Board correctly observed here. Therefore, we decline to do so and continue to rely on the machine-or-transformation test as articulated by the Supreme Court.

We further reject calls for categorical exclusions beyond those for fundamental principles already identified by the Supreme Court.²² We rejected just such an exclusion in State Street, noting that the so-called "business method exception" was unlawful and that business method claims (and indeed all process claims) are "subject to the same legal requirements for patentability as applied to any other process or method." 149 F.3d at 1375-76. We reaffirm this conclusion.²³

Lastly, we address a possible misunderstanding of our decision in Comiskey. Some may suggest that Comiskey implicitly applied a new § 101 test that bars any claim reciting a mental process that lacks significant "physical steps." We did not so hold, nor did we announce any new test at all in Comiskey. Rather, we simply recognized that the Supreme Court has held that mental processes, like fundamental principles, are excluded by § 101 because "'[p]henomena of nature, though just discovered, mental processes, and abstract intellectual concepts are the basic tools of scientific and technological work.'" Comiskey, 499 F.3d at 1377 (quoting Benson, 409 U.S. at 67) (emphasis added). And we actually applied the machine-or-transformation test to determine whether various claims at issue were drawn to patent-eligible subject matter.²⁴Id. at 1379 ("Comiskey has conceded that these claims do not require a machine, and these claims evidently do not describe a process of manufacture or a process for the alteration of a composition of matter."). Because those claims failed the machine-or-transformation test, we held that they were drawn solely to a fundamental principle, the mental process of arbitrating a dispute, and were thus not patent-eligible under § 101. Id.

Further, not only did we not rely on a "physical steps" test in Comiskey, but we have criticized such an approach to the § 101 analysis in earlier decisions. In AT&T, we rejected a "physical limitations" test and noted that "the mere fact that a claimed invention involves inputting numbers, calculating numbers, outputting numbers, and storing numbers, in and of itself, would not render it nonstatutory subject matter." 172 F.3d at 1359 (quoting State St., 149 F.3d at 1374). The same reasoning applies when the claim at issue recites fundamental principles other than mathematical algorithms. Thus, the proper inquiry under § 101 is not whether the process claim recites sufficient "physical steps," but rather whether the claim meets the machine-or-transformation test.²⁵ As a result, even a claim that recites "physical steps" but neither recites a particular machine or apparatus, nor transforms any article into a different state or thing, is not drawn to patent-eligible subject matter. Conversely, a claim that purportedly lacks any "physical steps" but is still tied to a machine or achieves an eligible transformation passes muster under § 101.²⁶

The machine-or-transformation test is a two-branched inquiry; an applicant may show that a process claim satisfies § 101 either by showing that his claim is tied to a particular machine, or by showing that his claim transforms an article. See Benson, 409 U.S. at 70. Certain considerations are applicable to analysis under either branch. First, as illustrated by Benson and discussed below, the use of a specific machine or transformation of an article must impose meaningful limits on the claim's scope to impart patent-eligibility. See Benson, 409 U.S. at 71-72. Second, the involvement of the machine or transformation in the claimed process must not merely be insignificant extra-solution activity. See Flook, 437 U.S. at 590.

As to machine implementation, Applicants themselves admit that the language of claim 1 does not limit any process step to any specific machine or apparatus. See Appellants' Br. at 11. As a result, issues specific to the machine implementation part of the test are not before us today. We leave to future cases the elaboration of the precise contours of machine implementation, as well as the answers to particular questions, such as whether or when recitation of a computer suffices to tie a process claim to a particular machine.

We will, however, consider some of our past cases to gain insight into the transformation part of the test. A claimed process is patent-eligible if it transforms an article into a different state or thing. This transformation must be central to the purpose of the claimed process. But the main aspect of the transformation test that requires clarification here is what sorts of things constitute "articles" such that their transformation is sufficient to impart patent-eligibility under § 101. It is virtually self-evident that a process for a chemical or physical transformation of physical objects or substances is patent-eligible subject matter. As the Supreme Court stated in Benson:

The raw materials of many information-age processes, however, are electronic signals and electronically-manipulated data. And some so-called business methods, such as that claimed in the present case, involve the manipulation of even more abstract constructs such as legal obligations, organizational relationships, and business risks. Which, if any, of these processes qualify as a transformation or reduction of an article into a different state or thing constituting patent-eligible subject matter?

Our case law has taken a measured approach to this question, and we see no reason here to expand the boundaries of what constitutes patent-eligible transformations of articles.

Our predecessor court's mixed result in Abele illustrates this point. There, we held unpatentable a broad independent claim reciting a process of graphically displaying variances of data from average values. Abele, 684 F.2d at 909. That claim did not specify any particular type or nature of data; nor did it specify how or from where the data was obtained or what the data represented. Id.; see also In re Meyer, 688 F.2d 789, 792-93 (CCPA 1982) (process claim involving undefined "complex system" and indeterminate "factors" drawn from unspecified "testing" not patent-eligible). In contrast, we held one of Abele's dependent claims to be drawn to patent-eligible subject matter where it specified that "said data is X-ray attenuation data produced in a two dimensional field by a computed tomography scanner." Abele, 684 F.2d at 908-09. This data clearly represented physical and tangible objects, namely the structure of bones, organs, and other body tissues. Thus, the transformation of that raw data into a particular visual depiction of a physical object on a display was sufficient to render that more narrowly-claimed process patent-eligible.

We further note for clarity that the electronic transformation of the data itself into a visual depiction in Abele was sufficient; the claim was not required to involve any transformation of the underlying physical object that the data represented. We believe this is faithful to the concern the Supreme Court articulated as the basis for the machine-or-transformation test, namely the prevention of pre-emption of fundamental principles. So long as the claimed process is limited to a practical application of a fundamental principle to transform specific data, and the claim is limited to a visual depiction that represents specific physical objects or substances, there is no danger that the scope of the claim would wholly pre-empt all uses of the principle.

This court and our predecessor court have frequently stated that adding a data-gathering step to an algorithm is insufficient to convert that algorithm into a patent-eligible process. E.g., Grams, 888 F.2d at 840 (step of "deriv[ing] data for the algorithm will not render the claim statutory"); Meyer, 688 F.2d at 794 ("[data-gathering] step[s] cannot make an otherwise nonstatutory claim statutory"). For example, in Grams we held unpatentable a process of performing a clinical test and, based on the data from that test, determining if an abnormality existed and possible causes of any abnormality. 888 F.2d at 837, 841. We rejected the claim because it was merely an algorithm combined with a data-gathering step. Id. at 839-41. We note that, at least in most cases, gathering data would not constitute a transformation of any article. A requirement simply that data inputs be gathered -- without specifying how -- is a meaningless limit on a claim to an algorithm because every algorithm inherently requires the gathering of data inputs. Grams, 888 F.2d at 839-40. Further, the inherent step of gathering data can also fairly be characterized as insignificant extra-solution activity. See Flook, 437 U.S. at 590.

Similarly, In re Schrader presented claims directed to a method of conducting an auction of multiple items in which the winning bids were selected in a manner that maximized the total price of all the items (rather than to the highest individual bid for each item separately). 22 F.3d 290, 291 (Fed. Cir. 1994). We held the claims to be drawn to unpatentable subject matter, namely a mathematical optimization algorithm. Id. at 293-94. No specific machine or apparatus was recited. The claimed method did require a step of recording the bids on each item, though no particular manner of recording (e.g., on paper, on a computer) was specified. Id. But, relying on Flook, we held that this step constituted insignificant extra-solution activity. Id. at 294.

We hold that the Applicants' process as claimed does not transform any article to a different state or thing. Purported transformations or manipulations simply of public or private legal obligations or relationships, business risks, or other such abstractions cannot meet the test because they are not physical objects or substances, and they are not representative of physical objects or substances. Applicants' process at most incorporates only such ineligible transformations. See Appellants' Br. at 11 ("[The claimed process] transforms the relationships between the commodity provider, the consumers and market participants. . . ."). As discussed earlier, the process as claimed encompasses the exchange of only options, which are simply legal rights to purchase some commodity at a given price in a given time period. See J.A. at 86-87. The claim only refers to "transactions" involving the exchange of these legal rights at a "fixed rate corresponding to a risk position." See '892 application cl.1. Thus, claim 1 does not involve the transformation of any physical object or substance, or an electronic signal representative of any physical object or substance. Given its admitted failure to meet the machine implementation part of the test as well, the claim entirely fails the machine-or-transformation test and is not drawn to patent-eligible subject matter.

Applicants' arguments are unavailing because they rely on incorrect or insufficient considerations and do not address their claim's failure to meet the requirements of the Supreme Court's machine-or-transformation test. First, they argue that claim 1 produces "useful, concrete and tangible results." But as already discussed, this is insufficient to establish patent-eligibility under § 101. Applicants also argue that their claimed process does not comprise only "steps that are totally or substantially practiced in the mind but clearly require physical activity which have [sic] a tangible result." Appellants' Br. at 9. But as previously discussed, the correct analysis is whether the claim meets the machine-or-transformation test, not whether it recites "physical steps." Even if it is true that Applicant's claim "can only be practiced by a series of physical acts" as they argue, see id. at 9, its clear failure to satisfy the machine-or-transformation test is fatal. Thus, while we agree with Applicants that the only limit to patent-eligibility imposed by Congress is that the invention fall within one of the four categories enumerated in § 101, we must apply the Supreme Court's test to determine whether a claim to a process is drawn to a statutory "process" within the meaning of § 101. Applied here, Applicants' claim fails that test so it is not drawn to a "process" under § 101 as that term has been interpreted.

On the other hand, while we agree with the PTO that the machine-or-transformation test is the correct test to apply in determining whether a process claim is patent-eligible under § 101, we do not agree, as discussed earlier, that this amounts to a "technological arts" test. See Appellee's Br. at 24-28. Neither the PTO nor the courts may pay short shrift to the machine-or-transformation test by using purported equivalents or shortcuts such as a "technological arts" requirement. Rather, the machine-or-transformation test is the only applicable test and must be applied, in light of the guidance provided by the Supreme Court and this court, when evaluating the patent-eligibility of process claims. When we do so here, however, we must conclude, as the PTO did, that Applicants' claim fails the test.

Applicants' claim is similar to the claims we held unpatentable under § 101 in Comiskey. There, the applicant claimed a process for mandatory arbitration of disputes regarding unilateral documents and bilateral "contractual" documents in which arbitration was required by the language of the document, a dispute regarding the document was arbitrated, and a binding decision resulted from the arbitration. Comiskey, 499 F.3d at 1368-69. We held the broadest process claims unpatentable under § 101 because "these claims do not require a machine, and these claims evidently do not describe a process of manufacture or a process for the alteration of a composition of matter." Id. at 1379. We concluded that the claims were instead drawn to the "mental process" of arbitrating disputes, and that claims to such an "application of [only] human intelligence to the solution of practical problems" is no more than a claim to a fundamental principle. Id. at 1377-79 (quoting Benson, 409 U.S. at 67 ("[M]ental processes, and abstract intellectual concepts are not patentable, as they are the basic tools of scientific and technological work.")).

Just as the Comiskey claims as a whole were directed to the mental process of arbitrating a dispute to decide its resolution, the claimed process here as a whole is directed to the mental and mathematical process of identifying transactions that would hedge risk. The fact that the claim requires the identified transactions actually to be made does no more to alter the character of the claim as a whole than the fact that the claims in Comiskey required a decision to actually be rendered in the arbitration -- i.e., in neither case do the claims require the use of any particular machine or achieve any eligible transformation.

We have in fact consistently rejected claims like those in the present appeal and in Comiskey. For example, in Meyer, the applicant sought to patent a method of diagnosing the location of a malfunction in an unspecified multi-component system that assigned a numerical value, a "factor," to each component and updated that value based on diagnostic tests of each component. 688 F.2d at 792-93. The locations of any malfunctions could thus be deduced from reviewing these "factors." The diagnostic tests were not identified, and the "factors" were not tied to any particular measurement; indeed they could be arbitrary. Id. at 790. We held that the claim was effectively drawn only to "a mathematical algorithm representing a mental process," and we affirmed the PTO's rejection on § 101 grounds. Id. at 796. No machine was recited in the claim, and the only potential "transformation" was of the disembodied "factors" from one number to another. Thus, the claim effectively sought to pre-empt the fundamental mental process of diagnosing the location of a malfunction in a system by noticing that the condition of a particular component had changed. And as discussed earlier, a similar claim was rejected in Grams.²⁷See 888 F.2d at 839-40 (rejecting claim to process of diagnosing "abnormal condition" in person by identifying and noticing discrepancies in results of unspecified clinical tests of different parts of body).

Similarly to the situations in Meyer and Grams, Applicants here seek to claim a non-transformative process that encompasses a purely mental process of performing requisite mathematical calculations without the aid of a computer or any other device, mentally identifying those transactions that the calculations have revealed would hedge each other's risks, and performing the post-solution step of consummating those transactions. Therefore, claim 1 would effectively pre-empt any application of the fundamental concept of hedging and mathematical calculations inherent in hedging (not even limited to any particular mathematical formula). And while Applicants argue that the scope of this pre-emption is limited to hedging as applied in the area of consumable commodities, the Supreme Court's reasoning has made clear that effective pre-emption of all applications of hedging even just within the area of consumable commodities is impermissible. See Diehr, 450 U.S. at 191-92 (holding that field-of-use limitations are insufficient to impart patent-eligibility to otherwise unpatentable claims drawn to fundamental principles). Moreover, while the claimed process contains physical steps (initiating, identifying), it does not involve transforming an article into a different state or thing. Therefore, Applicants' claim is not drawn to patent-eligible subject matter under § 101.

AFFIRMED.

² As a result, we decline to discuss In re Nuijten because that decision primarily concerned whether a claim to an electronic signal was drawn to a patent-eligible manufacture. 500 F.3d 1346, 1356-57 (Fed. Cir. 2007). We note that the PTO did not dispute that the process claims in Nuijten were drawn to patent-eligible subject matter under § 101 and allowed those claims.

³ Congress provided a definition of "process" in 35 U.S.C. § 100(b): "The term 'process' means process, art or method, and includes a new use of a known process, machine, manufacture, composition of matter, or material." However, this provision is unhelpful given that the definition itself uses the term "process."

⁴ The Patent Act of 1793 originally used the term "art" rather than "process," which remained unchanged until Congress enacted the current version of § 101 in 1952. But the Supreme Court has held that this change did not alter the scope of patent eligibility over processes because "[i]n the language of the patent law, [a process] is an art." Diamond v. Diehr, 450 U.S. 175, 182-84 (1981) (quoting Cochrane v. Deener, 94 U.S. 780, 787-88 (1877)); see also Comiskey, 499 F.3d at 1375.

⁵ As used in this opinion, "fundamental principles" means "laws of nature, natural phenomena, and abstract ideas."

⁶ Mathematical algorithms have, in other cases, been identified instead as abstract ideas rather than laws of nature. See, e.g., State St., 149 F.3d at 1373. Whether either or both views are correct is immaterial since both laws of nature and abstract ideas are unpatentable under § 101. Diehr, 450 U.S. at 185.

⁷ While the Court did not give explicit definitions of terms such as "tied to," "transforms," or "article," a careful analysis of its opinions and the subsequent jurisprudence of this court applying those decisions, discussed infra, informs our understanding of the Court's machine-or-transformation test.

⁸ To the extent it may be argued that Flook did not explicitly follow the machine-or-transformation test first articulated in Benson, we note that the more recent decision in Diehr reaffirmed the machine-or-transformation test. See Diehr, 450 U.S. at 191-92. Moreover, the Diehr Court explained that Flook "presented a similar situation" to Benson and considered it consistent with the holdings of Diehr and Benson. Diehr at 186-87, 189, 191-92. We thus follow the Diehr Court's understanding of Flook.

⁹ We acknowledge that the Supreme Court in Benson stated that the claims at issue "were not limited . . . to any particular apparatus or machinery." 409 U.S. at 64. However, the Court immediately thereafter stated: "[The claims] purported to cover any use of the claimed method in a general-purpose digital computer of any type." Id. And, as discussed herein, the Court relied for its holding on its understanding that the claimed process pre-empted all uses of the recited algorithm because its only possible use was on a digital computer. Id. at 71-72. The Diehr Court, in discussing Benson, relied only on this latter understanding of the Benson claims. See Diehr, 450 U.S. at 185-87. We must do the same.

¹⁰See, e.g., Br. of Amicus Curiae Am. Intellectual Prop. Law Ass'n at 17-21; Br. of Amicus Curiae Regulatory Datacorp, Inc. at 10-15.

¹¹ We believe that the Supreme Court spoke of the machine-or-transformation test as the "clue" to patent-eligibility because the test is the tool used to determine whether a claim is drawn to a statutory "process" -- the statute does not itself explicitly mention machine implementation or transformation. We do not consider the word "clue" to indicate that the machine-or-implementation test is optional or merely advisory. Rather, the Court described it as the clue, not merely "a" clue. See Benson, 409 U.S. at 70.

¹² The Diehr Court stated: "[W]hen a claim containing a mathematical formula implements or applies that formula in a structure or process which, when considered as a whole, is performing a function which the patent laws were designed to protect (e.g., transforming or reducing an article to a different state or thing), then the claim satisfies the requirements of § 101." 450 U.S at 192 (emphases added). When read together with Benson and Flook, on which the Diehr Court firmly relied, we believe this statement is consistent with the machine-or-transformation test. But as we noted in AT&T, language such as the use of "e.g." may indicate the Supreme Court's recognition that the machine-or-transformation test might require modification in the future. See AT&T, 172 F.3d at 1358-59.

¹³ The example of the Pythagorean theorem applied to surveying techniques could also be considered an example of a mere field-of-use limitation.

¹⁴ Although the Court spoke of "postsolution" activity, we have recognized that the Court's reasoning is equally applicable to any insignificant extra-solution activity regardless of where and when it appears in the claimed process. See In re Schrader, 22 F.3d 290, 294 (Fed. Cir. 1994) (holding a simple recordation step in the middle of the claimed process incapable of imparting patent-eligibility under § 101); In re Grams, 888 F.2d 835, 839-40 (Fed. Cir. 1989) (holding a pre-solution step of gathering data incapable of imparting patent-eligibility under § 101).

¹⁵ By the same token, considerations of adequate written description, enablement, best mode, etc., are also irrelevant to the § 101 analysis because they, too, are governed by other provisions of the Patent Act. Section 101 does, however, allow for patents only on useful inventions. Brenner v. Manson, 383 U.S. 519, 532-35 (1966).

¹⁶ We note that the PTO, too, has been active in analyzing § 101 law. See, e.g., Ex parte Lundgren, 76 USPQ2d 1385 (B.P.A.I. 2004); Interim Guidelines for Examination of Patent Applications for Patent Subject Matter Eligibility, Off. Gaz. Pat. & Trademark Office, Nov. 22, 2005.

¹⁷ Therefore, in Abele, Meyer, Grams, Arrhythmia Research Technology, Inc. v. Corazonix Corp., 958 F.2d1053 (Fed. Cir. 1992), and other decisions, those portions relying solely on the Freeman-Walter-Abele test should no longer be relied on.

¹⁸ In State Street, as is often forgotten, we addressed a claim drawn not to a process but to a machine. 149 F.3d at 1371-72 (holding that the means-plus-function elements of the claims on appeal all corresponded to supporting structures disclosed in the written description).

¹⁹ As a result, those portions of our opinions in State Street and AT&T relying solely on a "useful, concrete and tangible result" analysis should no longer be relied on.

²⁰See, e.g., Br. of Amicus Curiae Consumers Union et al. at 6-10; Br. of Amicus Curiae William Mitchell Coll. of Law Intellectual Prop. Inst. at 14-15.

²¹Compare Appellee's Br. at 24-28 (arguing that patents should be reserved only for "technological" inventions that "involve[] the application of science or mathematics," thereby excluding "non-technological inventions" such as "activities whose ability to achieve their claimed goals depended solely on contract formation"), with Br. of Amicus Curiae Regulatory Datacorp, Inc. at 19-24 (arguing that "innovations in business, finance, and other applied economic fields plainly qualify as 'technological'" since "a fair definition of technological is 'characterized by the practical application of knowledge in a particular field'" and because modern economics has "a closer affinity to physics and engineering than to liberal arts like English literature").

²²See, e.g., Br. of Amicus Curiae Fin. Servs. Indus. at 20 ("[E]xtending patent protection to pure methods of doing business . . . is contrary to the constitutional and statutory basis for granting patent monopolies. . . .").

²³ Therefore, although invited to do so by several amici, we decline to adopt a broad exclusion over software or any other such category of subject matter beyond the exclusion of claims drawn to fundamental principles set forth by the Supreme Court. See, e.g., Br. of Amicus Curiae End Software Patents; Br. of Amicus Curiae Red Hat, Inc. at 4-7. We also note that the process claim at issue in this appeal is not, in any event, a software claim. Thus, the facts here would be largely unhelpful in illuminating the distinctions between those software claims that are patent-eligible and those that are not.

²⁴ Our statement in Comiskey that "a claim reciting an algorithm or abstract idea can state statutory subject matter only if, as employed in the process, it is embodied in, operates on, transforms, or otherwise involves another class of statutory subject matter, i.e., a machine, manufacture, or composition of matter," 499 F.3d at 1376, was simply a summarization of the Supreme Court's machine-or-transformation test and should not be understood as altering that test.

²⁵ Thus, it is simply inapposite to the § 101 analysis whether process steps performed by software on a computer are sufficiently "physical."

²⁶ Of course, a claimed process wherein all of the process steps may be performed entirely in the human mind is obviously not tied to any machine and does not transform any article into a different state or thing. As a result, it would not be patent-eligible under § 101.

²⁷ We note that several Justices of the Supreme Court, in a dissent to a dismissal of a writ of certiorari, expressed their view that a similar claim in Laboratory Corp. of America Holdings v. Metabolite Laboratories, Inc. was drawn to unpatentable subject matter. 126 S. Ct. 2921, 2927-28 (2006) (Breyer, J., dissenting; joined by Stevens, J., and Souter, J.). There, the claimed process only comprised the steps of: (1) "assaying a body fluid for an elevated level of total homocysteine," and (2) "correlating an elevated level of total homocysteine in said body fluid with a deficiency of cobalamin or folate." Id. at 2924.

While I fully join the majority opinion, I write separately to respond to the claim in the two dissents that the majority's opinion is not grounded in the statute, but rather "usurps the legislative role."¹ In fact, the unpatentability of processes not involving manufactures, machines, or compositions of matter has been firmly embedded in the statute since the time of the Patent Act of 1793, ch. 11, 1 Stat. 318 (1793). It is our dissenting colleagues who would legislate by expanding patentable subject matter far beyond what is allowed by the statute.

The current version of § 101 can be traced back to the Patent Act of 1793. In relevant part, the 1793 Act stated that a patent may be granted to any person or persons who:

Later, Justice Story, writing for the Supreme Court, recognized the profound influence of the English practice on these early patent laws, which in many respects codified the common law:

While Congress departed from the English practice in certain limited respects, in many respects Congress simply adopted the English practice without change. Both the 1790 and the 1793 Acts, for example, adopted the same 14-year patent term as in England. Both also required inventors to file a written specification -- a requirement recognized by the English common law courts in the mid-eighteenth century.⁸ In addition, as discussed below, the categories of patentable subject matter closely tracked the English approach, and in certain respects reflected a deliberate choice between competing views prevalent in England at the time.

Each of the five categories of patentable subject matter recognized by the 1793 Patent Act -- (1) "manufacture," (2) "machine," (3) "composition of matter," (4) "any new and useful improvement," and (5) "art" -- was drawn either from the Statute of Monopolies and the common law refinement of its interpretation or resolved competing views being debated in England at the time. See To Promote the Progress, supra n.4 at 239.

"Manufacture." At the most basic level, the 1793 Act, like the Statute of Monopolies, expressly provided for the patentability of "manufactures." This language was not accidental, but rather reflected a conscious adoption of that term as it was used in the English practice. Id. ("It is clear that the Congress sought to incorporate into the U.S. statutory scheme in 1793 at least as much of the common law interpretation of 'new manufactures' as was understood at the time.").

"Machine." Likewise, the category of "machines" in the 1793 Act had long been understood to be within the term "manufactures" as used in the English statute. See id.; see, e.g., Morris v. Bramson, 1 Carp. P.C. 30, 31 (K.B. 1776) (sustaining a patent "for an engine or machine on which is fixed a set of working needles . . . for the making of eyelet-holes") (emphasis added); MacLeod, supra n.8 at 101 (noting, among numerous other early machine patents, seven patents on "machinery to raise coal and ores" before 1750).

"Composition of Matter." Although the 1790 statute did not explicitly include "compositions of matter," this was remedied in the 1793 statute. At the time, "compositions of matter" were already understood to be a type of manufacture patentable under the English statute. See To Promote the Progress, supra n.4, at 224 n.4. One example is found in Liardet v. Johnson, 1 Carp. P.C. 35 (K.B. 1778), a case involving a patent on a "composition" of stucco (a composition of matter). Lord Mansfield's jury instructions noted that by the time of that trial he had decided "several cases" involving compositions: "But if . . . the specification of the composition gives no proportions, there is an end of his patent. . . . I have determined, [in] several cases here, the specification must state, where there is a composition, the proportions. . . ."⁹

"Any new and useful improvement." The reference to "any new and useful improvement" in the 1793 Act also adopted a consensus recently reached by the English courts. The common law courts had first ruled in Bircot's Case in the early seventeenth century that an improvement to an existing machine could not be the proper subject of a patent under the Statute of Monopolies. See Boulton v. Bull, 2 H. Bl. 463, 488 (C.P. 1795). In 1776 that line of cases was overruled in Morris v. Bramson, because such a reading of the statute "would go to repeal almost every patent that was ever granted."¹⁰

"Art." As the Supreme Court has recognized, a process "was considered a form of 'art' as that term was used in the 1793 Act." Diehr, 450 U.S. at 182 (citing Corning v. Burden, 56 U.S. at 267-268). The language of the Statute of Monopolies permitted patents on that which could be characterized as the "working or making of any manner of new manufactures within this realm." 21 Jac. 1. c.3, s.6. While this language plainly applied to tangible "new manufactures" (such as machines or compositions of matter), it also appeared to allow patenting of manufacturing processes as the "working or making of any manner of new manufactures." Thus, under the Statute of Monopolies patents could be had on the "working or making of any manner of new manufactures." Numerous method patents had issued by 1793, including James Watt's famous 1769 patent on a "[m]ethod of diminishing the consumption of fuel in [steam]-engines."¹¹ However, the English courts in the mid-eighteenth century had not yet resolved whether processes for manufacturing were themselves patentable under the statute, and as discussed below, the issue was being actively litigated in the English courts. In the 1793 Act Congress resolved this question by including the term "art" in the statute, adopting the practice of the English law officers and the views of those in England who favored process patents.

Second, the English patent practice before and contemporaneous with the 1793 Act confirms the notion that patentable subject matter was limited by the term "manufacture" in the Statute of Monopolies and required a relation to the other categories of patentable subject matter. The organization of human activity was not within its bounds. Rather, the patents registered in England under the Statute of Monopolies before 1793 were limited to articles of manufacture, machines for manufacturing, compositions of matter, and related processes. A complete list of such patents (with a few missing patents from the 17th century) was published in the mid-1800s by Bennet Woodcroft, the first head of the English Patent Office.¹² Representative examples of patented processes at the time include: "Method of making a more easy and perfect division in stocking frame-work manufactures," No. 1417 to John Webb (1784); "Making and preparing potashes and pearl-ashes of materials not before used for the purpose," No. 1223 to Richard Shannon (1779); "Making salt from sea-water or brine, by steam," No. 1006 to Daniel Scott (1772); "Milling raw hides and skins so as to be equally good for leather as if tanned," No. 893 to George Merchant (1768); "Making salt, and removing the corrosive nature of the same, by a separate preparation of the brine," No. 416 to George Campbell (1717); and "Making good and merchantable tough iron . . . with one-fifth of the expense of charcoal as now used," No. 113 to Sir Phillibert Vernatt (1637).

Nothing in Woodcroft's list suggests that any of these hundreds of patents was on a method for organizing human activity, save for one aberrational patent discussed below. Rather, the established practice reflects the understanding that only processes related to manufacturing or "manufactures" were within the statute. The English cases before 1793 recognized that the practice followed in issuing patents was directly relevant to the construction of the statute. See, e.g., Morris, 1 Carp. P.C. at 34 (declining to read the statute in such a way that "would go to repeal almost every patent that was ever granted").

Third, nearly contemporaneous English cases following shortly after the 1793 Act lend further insight into what processes were thought to be patentable under the English practice at the time the statute was enacted. Although the issue of the validity of process patents had not conclusively been settled in the English common law before 1793, the question was brought before the courts in the landmark case of Boulton v. Bull, 2 H. Bl. 463, 465 (C.P. 1795), which involved James Watt's patent for a "method of lessening the consumption of steam, and consequently fuel in [steam] engines."¹³ In 1795, the court rendered a split decision, with two judges on each side. Boulton, 2 H. Bl. at 463 (1795). Those who viewed process patents as invalid, as did Justice Buller, urged that a method was merely an unpatentable principle: "A patent must be for some new production from [elements of nature], and not for the elements themselves." Id. at 485. He thought "it impossible to support a patent for a method only, without having carried it into effect and produced some new substance." Id. at 486. Justice Health similarly found that the "new invented method for lessening the consumption of steam and fuel in [steam] engines" (i.e., the Watt patent), being neither "machinery" nor a "substance[] (such as medicine[]) formed by chemical and other processes," was not within the Statute of Monopolies. Id. at 481-82. In contrast, Lord Chief Justice Eyres, who believed processes had long been a valid subject of patents, urged that "two-thirds, I believe I might say three-fourths, of all patents granted since the statute [of Monopolies] passed, are for methods of operating and of manufacturing. . . ." Id. at 494-95 (emphasis added). He agreed that "[u]ndoubtedly there can be no patent for a mere principle; but for a principle so far embodied and connected with corporeal substances . . . I think there may be a patent." Id. at 495 (emphasis added). Justice Rooke also noted that Watt's method was within the statute because it was connected with machinery: "What method can there be of saving steam or fuel in engines, but by some variation in the construction of them?" Id. at 478. The Justices who believed process patents were valid spoke in terms of manufacturing, machines, and compositions of matter, because the processes they believed fell within the statute were processes that "embodied and connected with corporeal substances." Id. at 495.

In 1799, on appeal from another case involving the same Watt patent, the validity of such process patents were upheld. Hornblower v. Boulton (K.B. 1799), 8 T.R. 95. There, Chief Justice Lord Kenyon stated that "it evidently appears that the patentee claims a monopoly for an engine or machine, composed of material parts, which are to produce the effect described; and that the mode of producing this is so described, as to enable mechanics to produce it. . . . I have no doubt in saying, that this is a patent for a manufacture, which I understand to be something made by the hands of man." Id. at 99. Justice Grose agreed, finding that "Mr. Watt had invented a method of lessening the consumption of steam and fuel in [steam] engines", and this was "not a patent for a mere principle, but for the working and making of a new manufacture within the words and meaning of the statute." Id. at 101-02. He further noted, however, that "This method . . . if not effected or accompanied by a manufacture, I should hardly consider as within the [statute]." Id. at 102-03 (emphasis added). Justice Lawrence similarly found such process patents to be permissible: "Engine and method mean the same thing, and may be the subject of a patent. 'Method,' properly speaking, is only placing several things and performing several operations in the most convenient order. . . ." Id. at 106.

There is no suggestion in any of this early consideration of process patents that processes for organizing human activity were or ever had been patentable. Rather, the uniform assumption was that the only processes that were patentable were processes for using or creating manufactures, machines, and compositions of matter.

The first of these is that the Supreme Court has made clear that when Congress intends to codify existing law, as was the case with the 1793 statute, the law must be interpreted in light of the practice at the time of codification. In Schmuck v. United States, 489 U.S. 705, 718-19 (1989), for example, the Court considered the proper interpretation of Rule 31(c) of the Federal Rules of Criminal Procedure. The rule, "which ha[d] not been amended since its adoption in 1944," was a restatement of an 1872 Act "codif[ying] the common law for federal criminal trials." Because of this fact, the Court found that the "prevailing practice at the time of the Rule's promulgation informs our understanding of its terms." Id.; see also, e.g., Eldred v. Ashcroft, 537 U.S. 186, 200 n.5 (2003) (considering the English practice at the time of the enactment of the 1790 copyright act); Tome v. United States, 513 U.S. 150, 159-60, 166 (1995) (looking to practice and noting that "a majority of common-law courts were performing [a task required by the common law] for well over a century" in interpreting a Federal Rule of Evidence that "was intended to carry over the common-law"); Harper & Row Publishers, Inc. v. Nation Enters., 471 U.S. 539, 549-554 (1985) (relying on the history and practice of copyright fair-use when statutory provision reflected the "intent of Congress to codify the common-law doctrine"); Sprague v. Ticonic Nat'l Bank, 307 U.S. 161, 164-65 (1939) (considering the English practice "which theretofore had been evolved in the English Court of Chancery" at the time of the 1789 Judiciary Act in determining availability of costs under equity jurisdiction).

Second, the Supreme Court language upon which the dissents rely¹⁵ offers no warrant for rewriting the 1793 Act. To be sure, Congress intended the courts to have some latitude in interpreting § 101 to cover emerging technologies, Chakrabarty, 447 U.S. at 316, and the categorical terms chosen are sufficiently broad to encompass a wide range of new technologies. But there is no evidence that Congress intended to confer upon the courts latitude to extend the categories of patentable subject matter in a significant way. To the contrary, the Supreme Court made clear that "Congress has performed its constitutional role in defining patentable subject matter in § 101; we perform ours in construing the language Congress has employed. In so doing, our obligation is to take statutes as we find them, guided, if ambiguity appears, by the legislative history and statutory purpose." Id. at 315. In Benson, the Court rejected the argument that its decision would "freeze process patents to old technologies, leaving no room for the revelations of the new, onrushing technology." Gottschalk v. Benson, 409 U.S. 63, 71 (1972). Instead, the Court explained that it "may be that the patent laws should be extended to cover [such onrushing technology], a policy matter to which we are not competent to speak" but that "considered action by the Congress is needed." Id. at 72-73.

Third, we are not dealing here with a type of subject matter unknown in 1793. One commentator has noted:

In short, the need to accommodate technological change in no way suggests that the judiciary is charged with rewriting the statute to include methods for organizing human activity that do not involve manufactures, machines, or compositions of matter.

The earliest claimed human activity patent cited in the briefs issued in 1840, entitled "Improvement in the Mathematical Operation of Drawing Lottery-Schemes." Br. of Amicus Curiae Regulatory Datacorp 23 n.54. But that patent is fundamentally unlike the Bilski claim, since it does not claim a method of organizing human activity not involving manufactures, machines or the creation of compositions of matter. See U.S. Patent No. 1700 (issued July 18, 1840). Rather, it is directed to a scheme of combining different combinations of numbers onto a large number of physical lottery tickets (i.e., a method for manufacturing lottery tickets). Id. col.1. The other early-issued patents cited in the amicus briefs are similarly distinguishable.¹⁸

Likewise, Supreme Court decisions before the 1952 Patent Act assumed that the only processes that were patentable were those involving other types of patentable subject matter. In later cases the Supreme Court has recognized that these cases set forth the standard for process patents in the pre-1952 period. Diehr, 450 U.S. at 182-84; Gottschalk, 409 U.S. at 69-70. The leading case is Corning v. Burden, 56 U.S. 252 (1853). There, the Supreme Court discussed the patentability of processes:

Finally, nothing in the legislative history of the 1952 Act suggests that Congress intended to enlarge the category of patentable subject matter to include patents such as the method Bilski attempts to claim. As discussed above, the only change made by the 1952 Act was in replacing the word "art" with the word "process." The Supreme Court has already concluded that this change did not alter the substantive understanding of the statute. See Diehr, 450 U.S. at 182 ("[A] process has historically enjoyed patent protection because it was considered a form of 'art' as that term was used in the 1793 Act.").

The House Report accompanying the 1952 bill includes the now-famous reference to "anything under the sun made by man":

In short, the history of § 101 fully supports the majority's holding that Bilski's claim does not recite patentable subject matter. Our decision does not reflect "legislative" work, but rather careful and respectful adherence to the Congressional purpose.

²See Diamond v. Diehr, 450 U.S. 175, 182 (1981) ("[A] process has historically enjoyed patent protection because it was considered a form of 'art' as that term was used in the 1793 Act."); Diamond v. Chakrabarty, 447 U.S. 303, 309 (1980). Rather, the 1952 Act simply affirmed the prior judicial understanding, as set forth in Corning v. Burden, 56 U.S. (15 How.) 252 (1853), that Congress in 1793 had provided for the patentability of a "process" under the term "art." Diehr, 450 U.S. at 182.

³ In relevant part, the 1790 Act permitted patents upon "any useful art, manufacture, engine, machine, or device, or any improvement therein not before known or used." Ch. 11, § 1, 1 Stat. 109, 110 (1790).

⁴ Edward C. Walterscheid, To Promote the Progress of Useful Arts: American Patent Law & Administration, 1798-1836 109 (1998) (hereinafter To Promote the Progress); see also Edward C. Walterscheid, The Early Evolution of the United States Patent Law: Antecedents (Part 1), 76 J. Pat. & Trademark Off. Soc'y 697, 698 (1994) ("[T]he English common law relating to patents was what was best known in the infant United States.").

⁵ Senate Committee Report Accompanying Proposed Amendments to H.R. 41, reprinted in Proceedings in Congress During the Years 1789 & 1790 Relating to the First Patent & Copyright Laws, 22 J. Pat. Off. Soc'y 352, 363 (1940).

⁶ Neither of those two instances related to patentable subject matter or was adopted in the enacted statute. The first proposed departure from the English practice was a novelty provision protecting the inventor against those who derived their knowledge of the invention from the true inventor; the second was in a requirement that patentees make a "Public Advertisement" of their invention. Such a requirement was thought necessary "in so extensive a Country as the United States." Senate Report, reprinted in 22 J. Pat. Off. Soc'y at 363-64.

The American statute ultimately differed in some other respects. For example, Congress rejected the English rule that the invention need only be novel in England. The American statute required novelty against the whole world and did not permit "patents of importation." See To Promote the Progress, supra n.4 at 95-97, 137-38.

⁷ Even the opposing view -- urging departure from the English practice in particular respects -- recognized that the English practice provided considerable guidance. See 3 Annals of Congress at 855-56 ("[Great Britain] had afforded, it was true, much experience on the subject; but regulations adopted there would not exactly comport in all respects either with the situation of this country, or with the rights of the citizen here. The minds of some members had taken a wrong direction, he conceived, from the view in which they had taken up the subject under its analogy with the doctrine of patents in England."); see also To Promote the Progress, supra n.4 at 216-17.

⁸See Christine MacLeod, Inventing the Industrial Revolution: The English Patent System, 1660-1800 48-49 (2002); To Promote the Progress, supra n.4 at 400, 404.

⁹ Edward C. Walterscheid, The Nature of the Intellectual Property Clause: A Study in Historical Perspective 55 (2002) (quoting E. Wyndham Hulme, On the History of the Patent Laws in the Seventeenth and Eighteenth Centuries, 18 L.Q. Rev. 280, 285 (1902)).

¹⁰Morris, 1 Carp. P.C. at 34; see also Boulton, 2 H.Bl. at 489 ("Since [ Morris v. Bramson ], it has been the generally received opinion in Westminster Hall, that a patent for an addition is good.").

¹¹ Walterscheid, supra n.9 at 355-56 (emphasis added); see also Boulton, 2 H. Bl. at 494-95 (1795) (noting that many method patents had issued).

¹² Bennet Woodcroft, Alphabetical Index of Patentees of Inventions, from March 2, 1617 (14 James I) to October 1, 1852 (16 Victoriae) (2d ed. 1857)).

¹³ The Supreme Court has in several opinions noted Boulton v. Bull in connection with its consideration of English patent practice. See, e.g., Markman v. Westview Instruments, Inc., 517 U.S. 370, 381 n.6 (1996); Evans v. Eaton, 20 U.S. (7 Wheat.) 356, 388 n.2-3 (1822).

¹⁴See, e.g., Rader, J., dissenting op. at 1 ("[T]his court ties our patent system to dicta from an industrial age decades removed from the bleeding edge."); id. ("[T]his court links patent eligibility to the age of iron and steel at a time of subatomic particles and terabytes "); Newman, J., dissenting op. at 5 ("[T]his court now adopts a redefinition of 'process' in Section 101 that excludes forms of information-based and software-implemented inventions arising from new technological capabilities. . . .").

¹⁵See, e.g., Newman, J., dissenting op. at 10 ("'[C]ourts should not read into the patent laws limitations and conditions which the legislature has not expressed.'" (quoting Diehr, 450 U.S. at 182)); Rader, J., dissenting op. at 3 (same).

¹⁶ Similarly, another commentator states: "it might be wondered why none of the many ingenious schemes of insurance has ever been protected by patenting it." D.F. Renn, John Knox's Plan for Insuring Lives: A Patent of Invention in 1778, 101 J. Inst. Actuaries 285 (1974), available at http://www.actuaries.org.uk/__data/assets/pdf_file/0006/25278/0285-0289.pdf (last visited Oct. 3, 2008).

¹⁷ Woodcroft, supra n.12 at 324.

¹⁸See, e.g., Complemental Accident Insurance Policy, U.S. Patent No. 389,818 (issued Sept. 18, 1888) (claiming a "complemental insurance policy" as an apparatus consisting of two separate cards secured together); Insurance System, U.S. Patent No. 853,852 (issued May 14, 1907) (claiming a "two-part insurance policy" as "an article of manufacture").

A number of the amici also refer to the discussion and the patents cited in "A USPTO White Paper" (the "White Paper") to establish the historical foundation of business method patents. See, e.g., Br. of Amicus Curiae Accenture 14-15 n. 11. As Judge Mayer notes, dissenting op. at 7 n.4, the White Paper does not show this proposition. As the White Paper itself recognizes, the early financial patents it discusses were largely mechanical products and methods related to financial paper, not methods for organizing human activity. White Paper at 2. Thus, while the White Paper shows that inventions in the business realm of finance and management historically enjoyed patent protection, it does little to establish that business methods directed to the organization of human activity not involving manufactures, machines or the creation of compositions of matter were similarly patentable.

The court today acts en banc to impose a new and far-reaching restriction on the kinds of inventions that are eligible to participate in the patent system. The court achieves this result by redefining the word "process" in the patent statute, to exclude all processes that do not transform physical matter or that are not performed by machines. The court thus excludes many of the kinds of inventions that apply today's electronic and photonic technologies, as well as other processes that handle data and information in novel ways. Such processes have long been patent eligible, and contribute to the vigor and variety of today's Information Age. This exclusion of process inventions is contrary to statute, contrary to precedent, and a negation of the constitutional mandate. Its impact on the future, as well as on the thousands of patents already granted, is unknown.

This exclusion is imposed at the threshold, before it is determined whether the excluded process is new, non-obvious, enabled, described, particularly claimed, etc.; that is, before the new process is examined for patentability. For example, we do not know whether the Bilski process would be found patentable under the statutory criteria, for they were never applied.

The innovations of the "knowledge economy" -- of "digital prosperity" -- have been dominant contributors to today's economic growth and societal change. Revision of the commercial structure affecting major aspects of today's industry should be approached with care, for there has been significant reliance on the law as it has existed, as many amici curiae pointed out. Indeed, the full reach of today's change of law is not clear, and the majority opinion states that many existing situations may require reassessment under the new criteria.

Uncertainty is the enemy of innovation. These new uncertainties not only diminish the incentives available to new enterprise, but disrupt the settled expectations of those who relied on the law as it existed. I respectfully dissent.

Section 101 is the statement of statutory eligibility

From the first United States patent act in 1790, the subject matter of the "useful arts" has been stated broadly, lest advance restraints inhibit the unknown future. The nature of patent-eligible subject matter has received judicial attention over the years, as new issues arose with advances in science and technology. The Supreme Court has consistently confirmed the constitutional and legislative purpose of providing a broadly applicable incentive to commerce and creativity, through this system of limited exclusivity. Concurrently, the Court early explained the limits of patentable subject matter, in that "fundamental truths" were not intended to be included in a system of exclusive rights, for they are the general foundations of knowledge. Thus laws of nature, natural phenomena, and abstract ideas are not subject to patenting. Several rulings of the Court have reviewed patent eligibility in light of these fundamentals. However, the Court explicitly negated today's restrictions. My colleagues in the majority are mistaken in finding that decisions of the Court require the per se limits to patent eligibility that the Federal Circuit today imposes. The patent statute and the Court's decisions neither establish nor support the exclusionary criteria now adopted.

The court today holds that any process that does not transform physical matter or require performance by machine is not within the definition of "process" in any of the patent statutes since 1790. All of the statutes contained a broad definition of patent-eligible subject matter, like that in the current Patent Act of 1952:

"Process" is defined in the 1952 statute as follows:

The definition of "process" provided at 35 U.S.C. § 100(b) is not "unhelpful," as this court now states, maj. op. at 6 n.3, but rather points up the errors in the court's new statutory interpretation. Section 100(b) incorporates the prior usage "art" and the term "method," and places no restriction on the definition. This court's redefinition of "process" as limiting access to the patent system to those processes that use specific machinery or that transform matter, is contrary to two centuries of statutory definition.

The breadth of Section 101 and its predecessor provisions reflects the legislative intention to accommodate not only known fields of creativity, but also the unknown future. The Court has consistently refrained from imposing unwarranted restrictions on statutory eligibility, and for computer-implemented processes the Court has explicitly rejected the direction now taken. Nonetheless, this court now adopts a redefinition of "process" in Section 101 that excludes forms of information-based and software-implemented inventions arising from new technological capabilities, stating that this result is required by the Court's computer-related cases, starting with Gottschalk v. Benson, 409 U.S. 63 (1972). However, the Court in Benson rejected the restriction that is imposed today:

This court's new definition of "process" was rejected in Gottschalk v. Benson

In Benson the claimed invention was a mathematical process for converting binary-coded decimal numerals into pure binary numbers. The Court explained that a mathematical formula unlimited to a specific use was simply an abstract idea of the nature of "fundamental truths," "phenomena of nature," and "abstract intellectual concepts," as have traditionally been outside of patent systems. 409 U.S. at 67. However, the Court explicitly declined to limit patent-eligible processes in the manner now adopted by this court, stating:

In Parker v. Flook the Court again rejected today's restrictions

The eligibility of mathematical processes next reached the Court in Parker v. Flook, 437 U.S. 584 (1978), where the Court held that the "process" category of Section 101 was not met by a claim to a mathematical formula for calculation of alarm limits for use in connection with catalytic conversion of hydrocarbons and, as in Benson, the claim was essentially for the mathematical formula. The Court later summarized its Flook holding, stating in Diamond v. Diehr that:

The Court explained in Flook that a field-of-use restriction to catalytic conversion did not distinguish Flook's mathematical process from that in Benson. However, the Court reiterated that patent eligibility of computer-directed processes is not controlled by the "qualifications of our earlier precedents," again negating any limiting effect of the usages of the past, on which this court now places heavy reliance. The Court stated:

The Court in Flook discussed that abstractions and fundamental principles have never been subject to patenting, but recognized the "unclear line" between an abstract principle and the application of such principle:

The decision in Flook has been recognized as a step in the evolution of the Court's thinking about computers. See Arrhythmia Res. Tech., Inc. v. Corazonix Corp., 958 F.2d 1053, 1057 n.4 (Fed. Cir. 1992) ("it appears to be generally agreed that these decisions represent evolving views of the Court") (citing R.L. Gable & J.B. Leaheey, The Strength of Patent Protection for Computer Products, 17 Rutgers Computer & Tech. L.J. 87 (1991); D. Chisum, The Patentability of Algorithms, 47 U. Pitt. L. Rev. 959 (1986)). That Flook does not support today's per se exclusion of forms of process inventions from access to the patent system is reinforced in the next Section 101 case decided by the Court:

In Diamond v. Chakrabarty the Court again rejected per se exclusions of subject matter from Section 101

In Diamond v. Chakrabarty, 447 U.S. 303 (1980), the scope of Section 101 was challenged as applied to the new fields of biotechnology and genetic engineering, with respect to the patent eligibility of a new bacterial "life form." The Court explained the reason for the broad terms of Section 101:

Whether the applications of physics and chemistry that are manifested in advances in computer hardware and software were more or less foreseeable than the advances in biology and biotechnology is debatable, but it is not debatable that these fields of endeavor have become primary contributors to today's economy and culture, as well as offering an untold potential for future advances. My colleagues offer no reason now to adopt a policy of exclusion of the unknown future from the subject matter now embraced in Section 101.

Soon after Chakrabarty was decided, the Court returned to patentability issues arising from computer capabilities:

In Diamond v. Diehr the Court directly held that computer-implemented processes are included in Section 101

The invention presented to the Court in Diehr was a "physical and chemical process for molding precision synthetic rubber products" where the process steps included using a mathematical formula. The Court held that the invention fit the "process" category of Section 101 although mathematical calculations were involved, and repeated its observation in Chakrabarty that "courts should not read into the patent laws limitations and conditions which the legislature has not expressed." Diehr, 450 U.S. at 182 (internal quotation marks omitted) (citing Chakrabarty, 447 U.S. at 308).

The Court distinguished a claim that would cover all uses of a mathematical formula and thus is an abstract construct, as in Benson, from a claim that applies a mathematical calculation for a specified purpose, as in Diehr. The Court stated that "a claim drawn to subject matter otherwise statutory does not become nonstatutory simply because it uses a mathematical formula, computer program, or digital computer," id. at 187, and explained that the line between statutory and nonstatutory processes depends on whether the process is directed to a specific purpose, see id. ("It is now commonplace that an application of a law of nature or mathematical formula to a known structure or process may well be deserving of patent protection." (emphasis in original)). The Court clarified that Flook did not hold that claims may be dissected into old and new parts to assess their patent eligibility. Id. at 189 n.12.

However, the Court did not propose the "machine-or-transformation" test that this court now insists was "enunciated" in Diehr as a specific limit to Section 101. Maj. op. at 10. In Diehr there was no issue of machine or transformation, for the Diehr process both employed a machine and produced a chemical transformation: the process was conducted in "an openable rubber molding press," and it cured the rubber. In discussing the known mathematical formula used by Diehr to calculate the relation between temperature and the rate of a chemical reaction, the Court recited the traditional exceptions of "laws of nature, natural phenomena, and abstract ideas," 450 U.S. at 185, and explained that the entirety of the process must be considered, not an individual mathematical step.

The Court characterized the holdings in Benson and Flook as standing for no more than the continued relevance of these "long-established" judicial exclusions, id., and repeated that a practical application of pure science or mathematics may be patentable, citing Mackay Radio & Telegraph Co. v. Radio Corp. of America, 306 U.S. 86, 94 (1939) ("While a scientific truth, or the mathematical expression of it, is not a patentable invention, a novel and useful structure created with the aid of knowledge and scientific truth may be."). The Court explained that the presence of a mathematical formula does not preclude patentability when the structure or process is performing a function within the scope of the patent system, stating:

It cannot be inferred that the Court intended, by this "e.g." parenthetical, to require the far-reaching exclusions now attributed to it. To the contrary, the Court in Diehr was explicit that "an application of a law of nature or mathematical formula" may merit patent protection, 450 U.S. at 187 (emphasis in original), and that the claimed process must be considered as a whole, id. at 188. The Court recognized that a process claim may combine steps that were separately known, and that abstract ideas such as mathematical formulae may be combined with other steps to produce a patentable process. Id. at 187. The steps are not to be "dissect[ed]" into new and old steps; it is the entire process that frames the Section 101 inquiry. Id. at 188.

The Diehr Court did not hold, as the majority opinion states, that transformation of physical state is a requirement of eligibility set by Section 101 unless the process is performed by a machine. It cannot be inferred that the Court silently imposed such a rule. See maj. op. at 14 (relying on lack of repetition in Diehr of the Benson and Flook disclaimers of requiring machine or transformation, as an implicit rejection of these disclaimers and tacit adoption of the requirement). There was no issue in Diehr of the need for either machine or transformation, for both were undisputedly present in the process of curing rubber. It cannot be said that the Court "enunciated" today's "definitive test" in Diehr.²

Subsequent Supreme Court authority reinforced the breadth of Section 101

In J.E.M. Ag Supply, Inc. v. Pioneer Hi-Bred International, Inc., 534 U.S. 124 (2001), the Court described Section 101 as a "dynamic provision designed to encompass new and unforeseen inventions," id. at 135, that case arising in the context of eligibility of newly developed plant varieties for patenting. The Court stated: "As in Chakrabarty, we decline to narrow the reach of § 101 where Congress has given us no indication that it intends this result." Id. at 145-46. The Court reiterated that "Congress plainly contemplated that the patent laws would be given wide scope," id. at 130 (quoting Chakrabarty, 447 U.S. at 308), and that the language of Section 101 is "extremely broad," id. This is not language of restriction, and it reflects the statutory policy and purpose of inclusion, not exclusion, in Section 101.

The Court's decisions of an earlier age do not support this court's restrictions of Section 101

My colleagues also find support for their restrictions on patent-eligible "process" inventions in the pre-Section 101 decisions O'Reilly v. Morse, 56 U.S. (15 How.) 62 (1853), Cochrane v. Deener, 94 U.S. 780 (1876), and Tilghman v. Proctor, 102 U.S. 707 (1880). Although the Court in Benson and in Flook took care to state that these early decisions do not require the restrictions that the Court was rejecting, this court now places heavy reliance on these early decisions, which this court describes as "consistent with the machine-or-transformation test later articulated in Benson and reaffirmed in Diehr." Maj. op. at 12. As I have discussed, no such test was "articulated in Benson" and "reaffirmed in Diehr."

However, these early cases do show, contrary to the majority opinion, that a "process" has always been a distinct category of patentable invention, and not tied to either apparatus or transformation, as this court now holds. For example, in Tilghman v. Proctor the Court considered a patent on a process for separating fats and oils, and held that the process was not restricted to any particular apparatus. The Court held that a process is an independent category of invention, and stated:

The majority also relies on O'Reilly v. Morse, citing the Court's rejection of Morse's Claim 8 for "the use of the motive power of the electro or galvanic current, which I call electromagnetism, however developed, for making or printing intelligible characters, signs or letters at any distances. . . ." The Court explained:

The majority opinion also relies on Cochrane v. Deener, particularly on certain words quoted in subsequent opinions of the Court. In Cochrane the invention was a method for bolting flour, described as a series of mechanical steps in the processing of flour meal. The question before the Court was whether the patented process would be infringed if the same steps were performed using different machinery. The answer was "that a process may be patentable, irrespective of the particular form of the instrumentalities used." 94 U.S. at 788. The Court stressed the independence of a process from the tools that perform it:

This court now cites Cochrane's description of a process as "acts performed upon subject-matter to be transformed and reduced to a different state or thing," id., this court stating that unless there is transformation there is no patentable process. That is not what this passage means. In earlier opinions this court and its predecessor court stated the correct view of this passage, as has the Supreme Court. The Court of Customs and Patent Appeals observed:

The Court saw the Cochrane decision in its proper perspective. Both Flook and Benson rejected the idea that Cochrane imposed the requirement of either specific machinery or the transformation of matter, as discussed ante. See Flook, 437 U.S. at 588 n.9; Benson, 409 U.S. at 71. Non-transformative processes were not at issue in either Cochrane or Diehr, and there is no endorsement in Diehr of a "machine-or-transformation" requirement for patentable processes.

These early cases cannot be held now to require exclusion, from the Section 101 definition of "process," of all processes that deal with data and information, whose only machinery is electrons, photons, or waves, or whose product is not a transformed physical substance.

The English Statute of Monopolies and English common law do not limit "process" in Section 101

I comment on this aspect in view of the proposal in the concurring opinion that this court's new two-prong test for Section 101 process inventions was implicit in United States law starting with the Act of 1790, because of Congress's knowledge of and importation of English common law and the English Statute of Monopolies of 1623. The full history of patent law in England is too ambitious to be achieved within the confines of Bilski's appeal,³ and the concurring opinion's selective treatment of this history may propagate misunderstanding.

The concurrence places primary reliance on the Statute of Monopolies, which was enacted in response to the monarchy's grant of monopolies "to court favorites in goods or businesses which had long before been enjoyed by the public." Graham v. John Deere Co., 383 U.S. 1, 5 (1966) (citing Peter Meinhardt, Inventions, Patents and Monopoly 30-35 (1946)). The Statute of Monopolies outlawed these "odious monopolies" or favors of the Crown, but, contrary to the concurring opinion, the Statute had nothing whatever to do with narrowing or eliminating categories of inventive subject matter eligible for a British patent. See Prager, Historical Background and Foundation of American Patent Law, 5 Am. J. Legal Hist. at 313 ("The statute [of Monopolies] said nothing about meritorious functions of patents, nothing about patent disclosures, and nothing about patent procedures; it was only directed against patent abuses.").

Patents for inventions had been granted by the Crown long before 1623. See Hulme, The History of the Patent System Under the Prerogative and at Common Law, 12 L.Q. Rev. at 143 (the first patent grant to the "introducer of a newly-invented process" was in 1440); Klitzke, Historical Background of the English Patent Law, 41 J.P.O.S. at 626-27 (discussing first patents for "invention" in England in the fifteenth century). That practice was unaffected by the terms of the Statute of Monopolies, which rendered "utterly void" all "Monopolies and all Commissions, Grants, Licenses, Charters and Letters Patent" that were directed to "the sole Buying, Selling, Making, Working or Using any Thing within this Realm," 21 Jac. 1, c.3, § I (Eng.), but which specifically excepted Letters Patent for inventions from that exclusion, id. § VI. The only new limitation on patents for invention was a fourteen-year limit on the term of exclusivity. See Klitzke, Historical Background of the English Patent Law, 41 J.P.O.S. at 649.

The usage "Letters Patent" described one of the forms of document whereby the Crown granted various rights, whether the grant was for an odious monopoly that the Statute of Monopolies eliminated, or for rights to an invention new to England. That usage was not changed by the Statute of Monopolies. Nor were other aspects of the British practice which differed from that enacted in the United States, particularly the aspect whereby a British patent could be granted to a person who imported something that was new to England, whether or not the import was previously known or the importer was the inventor thereof. In England, "[t]he rights of the inventor are derived from those of the importer, and not vice versa as is commonly supposed." Hulme, The History of the Patent System Under the Prerogative and at Common Law, 12 L.Q.R. at 152; see also MacLeod, Inventing the Industrial Revolution 13 ("The rights of the first inventor were understood to derive from those of the first importer of the invention.").

In contrast, in the United States the patent right has never been predicated upon importation, and has never been limited to "manufactures." See, e.g., Walterscheid, To Promote the Progress of Useful Arts 93, 137-38, 224; see also Prager, Historic Background and Foundation of American Patent Law, 5 Am. J. Legal Hist. at 309 ("The American Revolution destroyed many of the ancient customs; it brought a sweeping reorientation of patent law, with new forms, new rules, new concepts, and new ideals."). The differences between the American and English patent law at this nation's founding were marked, and English judicial decisions interpreting the English statute are of limited use in interpreting the United States statute. In all events, no English decision supports this court's new restrictive definition of "process."

The concurrence proposes that the Statute of Monopolies provides a binding definition of the terms "manufacture," "machine," "composition of matter," and "process" in Section 101 of the U.S. Patent Act. See concurring op. at 5-8. The only one of these terms that appears in the Statute of Monopolies is "manufacture", a broad term that reflects the usage of the period. Even at the time of this country's founding, the usage was broad, as set forth in Samuel Johnson's Dictionary of the English Language (3d. ed. 1768), which defines "manufacture" as "any thing made by art," and defines "art" as "the power of doing something not taught by nature and instinct"; "a science"; "a trade"; "artfulness"; "skill"; "dexterity." Historians explain that England's primary motive for patenting was to promote "[a]cquisition of superior Continental technology" at a time when England lagged behind, see MacLeod, Inventing the Industrial Revolution 11; this cannot be interpreted to mean that England and perforce the United States intended to eliminate "processes" from this incentive system. It is inconceivable that on this background the Framers, and again the enactors of the first United States patent statutes in 1790 and 1793, intended sub silentio to impose the limitations on "process" now created by this court.

Congress' earliest known draft patent bill included the terms "art, manufacture, engine, machine, invention or device, or any improvement upon the same." Walterscheid, To Promote the Progress of Useful Arts 92. The 1793 Act explicitly stated "any new and useful art," § 1, 1 Stat. 318 (1793), a usage that was carried forward until "art" was replaced with "process" in 35 U.S.C. § 101 and defined in § 100(b). Historians discuss that Congress' inclusion of any "art" or "process" in the patent system was a deliberate clarification of the English practice. See Walterscheid, To Promote the Progress of Useful Arts 93 ("[The first patent bill] appears to be an obvious attempt to deal legislatively with issues that were beginning to be addressed by the English courts. . . . [I]t states unequivocally that improvement inventions are patentable and expands the definition of invention or discovery beyond simply 'manufacture.'"); Karl B. Lutz, Patents and Science: A Clarification of the Patent Clause of the U.S. Constitution, 32 J.P.O.S. 83, 86 (1950) ("By the year 1787 it was being recognized even in Great Britain that the phrase 'new manufactures' was an unduly limited object for a patent system, since it seems to exclude new processes. . . . [This question was] resolved in the United States Constitution by broadening the field from 'new manufactures' to 'useful arts'. . . .").

In interpreting a statute, it is the language selected by Congress that occupies center stage: "[O]ur obligation is to take statutes as we find them, guided, if ambiguity appears, by the legislative history and statutory purpose." Chakrabarty, 447 U.S. at 315. The Court has "perceive[d] no ambiguity" in Section 101, leaving no need for foreign assistance. Id. The legislative choice to afford the patent system "wide scope," id. at 308, including "process" inventions, evolved in the United States independent of later developments of the common law in England.

The concurrence concludes that the Statute of Monopolies foreclosed the future patenting of anything that the concurrence calls a "business method" -- the term is not defined -- whether or not the method is new, inventive, and useful. But the Statute of Monopolies only foreclosed "odious" monopolies, illustrated by historical reports that Queen Elizabeth had granted monopolies on salt, ale, saltpeter, white soap, dredging machines, playing cards, and rape seed oil, and on processes and services such as Spanish leather-making, mining of various metals and ores, dying and dressing cloth, and iron tempering. See Walterscheid, Early Evolution (Part 2), 76 J.P.T.O.S. at 854 n.14; Klitzke, Historical Background of the English Patent Law, 41 J.P.O.S. at 634-35. These and other grants, many of which were implemented by Letters Patent, were the "odious monopolies" that were rendered illegal. They included several classes of known activity, product and process, and had nothing to do with new "inventions." The Statute of Monopolies cannot be held to have restricted the kinds of new processes that can today be eligible for patenting in the United States, merely because it outlawed patents on non-novel businesses in England. The presence or absence of "organizing human activity," a vague term created by the concurrence, has no connection or relevance to Parliament's elimination of monopoly patronage grants for old, established arts. The Statute of Monopolies neither excluded nor included inventions that involve human activity, although the words "the sole working or making in any manner of new manufactures" presuppose human activity. 21 Jac. 1, c.3, § VI (emphases added). We are directed to no authority for the proposition that a new and inventive process involving "human activity" has historically been treated differently from other processes; indeed, most inventions involve human activity.

The concurrence has provided hints of the complexity of the evolution of patent law in England, as in the United States, as the Industrial Revolution took hold. Historians have recognized these complexities. See, e.g., Walterscheid, To Promote the Progress of Useful Arts 5 ("[T]he American patent law almost from its inception departed from its common law counterpart in the interpretation that would be given to the definition of novelty. . . ."); Klitzke, Historical Background of the English Patent Law, 41 J.P.O.S. at 638 (noting that in Elizabethan times, novelty only required a showing that "the industry had not been carried on within the realm within a reasonable period of time, while today "the proof of a single public sale of an article" or a "printed publication" can negate patentability).

I caution against over-simplification, particularly in view of the uncertainties in English common law at the time of this country's founding. See Boulton v. Bull, 2 H. Bl. 463, 491 (C.P. 1795) (Eyre, C.J.) ("Patent rights are no where that I can find accurately discussed in our books."); MacLeod, Inventing the Industrial Revolution 61 ("It was only from the time when the Privy Council relinquished jurisdiction that a case law on patents began to develop. . . . But it was a slow process and even the spate of hard-fought patent cases at the end of the eighteenth century did little to establish a solid core of judicial wisdom."). The English judicial opinions of the eighteenth century were not as limiting on the United States as my colleagues suggest. See Walterscheid, The Nature of the Intellectual Property Clause: A Study in Historical Perspective 355 (2002) ("In the eighteenth century, patentees and those who gave advice concerning patents were certainly of the view that the Statute did not preclude the patenting of general principles of operation."); see also MacLeod, Inventing the Industrial Revolution 63-64.

It is reported that in the century and a half following enactment of the Statute of Monopolies, the English patent registers were replete with inventions claimed as "processes." See Walterscheid, Early Evolution (Part 3), 77 J.P.T.O.S. at 856 ("As one of the earliest texts on the patent law stated in 1806: 'most of the patents now taken out, are by name, for the method of doing particular things. . . ."). The concurrence agrees; but it is also reported that because patents were not litigated in the common law courts until the Privy Council authorized such suits in 1752, judicial interpretation of various aspects of patent law were essentially absent until about the time this country achieved independence, leading to the variety of views expressed in Boulton v. Bull. The legislators in the new United States cannot now be assigned the straightjacket of law not yet developed in England. Indeed, the first patent granted by President Washington, upon examination by Secretary of State Jefferson, was for a method of "making Pot-ash and Pearl-ash," a process patent granted during the period that the concurrence states was fraught with English uncertainty about process patents. See The First United States Patent, 36 J.P.O.S. 615, 616-17 (1954).

The concurrence lists some English process patents predating the United States' 1793 Patent Act, and argues that processes not sufficiently "like" these archaic inventions should not now be eligible for patenting. I refer simply to Flook, 437 U.S. at 588 n.9, where the Court stated: "As in Benson, we assume that a valid process patent may issue even if it does not meet one of the qualifications of our earlier precedents." Similarly, the Chakrabarty Court stated: "[A] statute is not to be confined to the particular applications . . . contemplated by the legislators. This is especially true in the field of patent law." Chakrabarty, 447 U.S. at 315-16 (citing Barr v. United States, 324 U.S. 83, 90 (1945); Browder v. United States, 312 U.S. 335, 339 (1941); Puerto Rico v. Shell Co., 302 U.S. 253, 257 (1937)). The meaning of the statutory term "process" is not limited by particular examples from more than two hundred years ago.

However, I cannot resist pointing to the "business method" patents on Woodcroft's list. See concurring op. at 15 (citing No. 1197 to John Knox (July 21, 1778) ("Plan for assurances on lives of persons from 10 to 80 years of age.")). Several other process patents on Woodcroft's list appear to involve financial subject matter, and to require primarily human activity. See, e.g., No. 1170 to John Molesworth (Sept. 29, 1777) ("Securing to the purchasers of shares and chances of state-lottery tickets any prize drawn in their favor."); No. 1159 to William Nicholson (July 14, 1777) ("Securing the property of persons purchasing shares of State-lottery tickets."), cited in Bennet Woodcroft, Alphabetical Index of Patentees of Inventions 383, 410 (U.S. ed. 1969). Other English process patents from the several decades following 1793 can aptly be described as "business methods," although not performed with the aid of computers. E.g., No. 10,367 to George Robert D'Harcourt (Oct. 29, 1844) ("Ascertaining and checking the number of checks or tickets which have been used and marked, applicable for railway officers.").

While most patents of an earlier era reflect the dominant mechanical and chemical technologies of that era, modern processes reflect the dramatic advances in telecommunications and computing that have occurred since the time of George III. See USPTO White Paper, Automated Financial or Management Data Processing Methods (Business Methods) 4 (2000), available at http://www.uspto.gov/web/menu/busmethp/whitepaper.pdf (hereinafter USPTO White Paper) ("The full arrival of electricity as a component in business data processing system[s] was a watershed event."). It is apparent that economic, or "business method," or "human activity" patents were neither explicitly nor implicitly foreclosed from access to the English patent system.

Evolution of process patents in the United States

The United States' history of patenting establishes the same point. The PTO has located various patents predating modern computer usages that can be described as financial or business methods. The USPTO White Paper at 3-4 and appendix A describes the history of financial apparatus and method patents dating back to 1799, including patents on bank notes, bills of credit, bills of exchange, check blanks, detecting and preventing counterfeiting, coin counting, interest calculation tables, and lotteries, all within the first fifty years of the United States patent system. It is a distortion of these patents to describe the processes as "tied to" another statutory category -- that is, paper and pencil. Concurring op. at 16-17 & n.18. Replacement of paper with a computer screen, and pencil with electrons, does not "untie" the process. Fairly considered, the many older financial and business-oriented patents that the PTO and many of the amici have identified are of the same type as the Bilski claims; they were surely not rendered patent-eligible solely because they used "paper" to instantiate the financial strategies and transactions that comprised their contribution.

I do not disagree with the general suggestion that statutes intended to codify the existing common law are to be interpreted in light of then-contemporary practice, including, if relevant, the English cases. See concurring op. at 12-13. However, the court must be scrupulous in assessing the relevance of decisions that were formulated on particularized facts involving the technology of the period. The United States Supreme Court has never held that "process" inventions suffered a second-class status under our statutes, achieving patent eligibility only derivatively through an explicit "tie" to another statutory category. The Court has repeatedly disparaged efforts to read in restrictions not based on statutory language. See Diehr, 450 U.S. at 182; Chakrabarty, 447 U.S. at 308. Yet second-class status is today engrafted on "process" inventions. There is plainly no basis for such restriction, which is a direct path to the "gloomy thought" that concerned Senator O.H. Platt in his Remarks in Congress at the Centennial Proceedings of the United States Patent System:

In sum, history does not support the retrogression sponsored by the concurrence.

This court now rejects its own CCPA and Federal Circuit precedent

The majority opinion holds that there is a Supreme Court restriction on process patents, "enunciated" in Benson, Flook, and Diehr; and that this restriction was improperly ignored by the Federal Circuit and the Court of Customs and Patent Appeals, leading us into error which we must now correct. Thus this court announces that our prior decisions may no longer be relied upon. Maj. op. at 19-20 & nn.17, 19. The effect on the patents and businesses that did rely on them is not considered.

The Court's decisions in Benson, Flook, and Diehr all reached the Supreme Court by way of the CCPA, and the CCPA successively implemented the Court's guidance in establishing the Freeman/Walter/Abele test for eligibility under Section 101. The Federal Circuit continued to consider computer-facilitated processes, as in Arrhythmia Research Technology, 958 F.2d at 1059-60, where patent-eligibility was confirmed for a computer-assisted mathematical analysis of electrocardiograph signals that determined the likelihood of recurrence of heart attack. This court now rules that this precedent "should no longer be relied on." Maj. op. at 19 n.17.

In In re Alappat, 33 F.3d 1526 (Fed. Cir. 1994) (en banc) the question was the eligibility for patent of a rasterizer that mathematically transforms data to eliminate aliasing in a digital oscilloscope. The court held that a computer-implemented system that produces a "useful, concrete, and tangible result" is Section 101 subject matter. Id. at 1544. This court now rules that "a 'useful, concrete and tangible result' analysis should no longer be relied on." Maj. op. at 20 n.19.

The Alappat court stressed the intent, embodied in the language of the statute, that the patent system be broadly available to new and useful inventions:

This principle was applied to a computer-implemented data processing system for managing pooled mutual fund assets in State Street Bank & Trust Co. v. Signature Financial Group, Inc., 149 F.3d 1368 (Fed. Cir. 1998), and to a method for recording and processing telephone data in AT&T v. Excel. The court explained that processes that include mathematical calculations in a practical application can produce a useful, concrete, and tangible result, which in State Street Bank was "expressed in numbers, such as price, profit, percentage, cost, or loss." 149 F.3d at 1375. In AT&T v. Excel the court applied State Street Bank and Diehr, and stated that "physical transformation . . . is not an invariable requirement, but merely one example of how a mathematical algorithm may bring about a useful application" and thus achieve a useful, concrete, and tangible result. 172 F.3d at 1358. This analysis, too, can no longer be relied on. Maj. op. at 20 n.19.

The now-discarded criterion of a "useful, concrete, and tangible result" has proved to be of ready and comprehensible applicability in a large variety of processes of the information and digital ages. The court in State Street Bank reinforced the thesis that there is no reason, in statute or policy, to exclude computer-implemented and information-based inventions from access to patentability. The holdings and reasoning of Alappat and State Street Bank guided the inventions of the electronic age into the patent system, while remaining faithful to the Diehr distinction between abstract ideas such as mathematical formulae and their application in a particular process for a specified purpose. And patentability has always required compliance with all of the requirements of the statute, including novelty, non-obviousness, utility, and the provisions of Section 112.

The public has relied on the rulings of this court and of the Supreme Court

The decisions in Alappat and State Street Bank confirmed the patent eligibility of many evolving areas of commerce, as inventors and investors explored new technological capabilities. The public and the economy have experienced extraordinary advances in information-based and computer-managed processes, supported by an enlarging patent base. The PTO reports that in Class 705, the examination classification associated with "business methods" and most likely to receive inventions that may not use machinery or transform physical matter, there were almost 10,000 patent applications filed in FY 2006 alone, and over 40,000 applications filed since FY 98 when State Street Bank was decided. See Wynn W. Coggins, USPTO, Update on Business Methods for the Business Methods Partnership Meeting 6 (2007) (hereinafter "PTO Report"), available at http://www.uspto.gov/web/menu/pbmethod/partnership.pps. An amicus in the present case reports that over 15,000 patents classified in Class 705 have issued. See Br. of Amicus Curiae Accenture, at 22 n.20.⁴ The industries identified with information-based and data-handling processes, as several amici curiae explain and illustrate, include fields as diverse as banking and finance, insurance, data processing, industrial engineering, and medicine.

Stable law, on which industry can rely, is a foundation of commercial advance into new products and processes. Inventiveness in the computer and information services fields has placed the United States in a position of technological and commercial preeminence. The information technology industry is reported to be "the key factor responsible for reversing the 20-year productivity slow-down from the mid-1970s to the mid-1990s and in driving today's robust productivity growth." R.D. Atkinson & A.S. McKay, Digital Prosperity: Understanding the Economic Benefits of the Information Technology Revolution 10 (Info. Tech. & Innovation Found. 2007), available at http://www.itif.org/files/digital_prosperity.pdf. By revenue estimates, in 2005 the software and information sectors constituted the fourth largest industry in the United States, with significantly faster growth than the overall U.S. economy. Software & Info. Indus. Ass'n, Software and Information: Driving the Knowledge Economy 7-8 (2008), http://www.siia.net/estore/globecon-08.pdf. A Congressional Report in 2006 stated:

This powerful economic move toward "intangibles" is a challenge to the backward-looking change of this court's ruling today. Until the shift represented by today's decision, statute and precedent have provided stability in the rapidly moving and commercially vibrant fields of the Information Age. Despite the economic importance of these interests, the consequences of our decision have not been considered. I don't know how much human creativity and commercial activity will be devalued by today's change in law; but neither do my colleagues.

The Section 101 interpretation that is now uprooted has the authority of years of reliance, and ought not be disturbed absent the most compelling reasons. "Considerations of stare decisis have special force in the area of statutory interpretation, for here, unlike in the context of constitutional interpretation, the legislative power is implicated, and Congress remains free to alter what [the courts] have done." Shepard v. United States, 544 U.S. 13, 23 (2005) (quoting Patterson v. McLean Credit Union, 491 U.S. 164, 172-73 (1989)); see also Hilton v. S.C. Pub. Res. Comm'n, 502 U.S. 197, 205 (1991) (in cases of statutory interpretation the importance of adhering to prior rulings is "most compelling"). Where, as here, Congress has not acted to modify the statute in the many years since Diehr and the decisions of this court, the force of stare decisis is even stronger. See Shepard, 544 U.S. at 23.

Adherence to settled law, resulting in settled expectations, is of particular importance "in cases involving property and contract rights, where reliance interests are involved." Payne v. Tennessee, 501 U.S. 808, 828 (1991); see also United States v. Title Ins. & Trust Co., 265 U.S. 472, 486 (1924) (declining to overrule precedent where prior ruling "has become a rule of property, and to disturb it now would be fraught with many injurious results"). This rationale is given no weight by my colleagues, as this court gratuitously disrupts decades of law underlying our own rulings. The only announced support for today's change appears to be the strained new reading of Supreme Court quotations. But this court has previously read these decades-old opinions differently, without objection by either Congress or the Court. My colleagues do not state a reason for their change of heart. See Benjamin N. Cardozo, The Nature of the Judicial Process 149 (1921) ("[T]he labor of judges would be increased almost to the breaking point if every past decision could be reopened in every case, and one could not lay one's own course of bricks on the secure foundation of the courses laid by others who had gone before him.").

It is the legislature's role to change the law if the public interest so requires. In Chakrabarty the Court stated: "The choice we are urged to make is a matter of high policy for resolution within the legislative process after the kind of investigation, examination, and study that legislative bodies can provide and courts cannot." 447 U.S. at 317; see also Flook, 437 U.S. 595 ("Difficult questions of policy concerning the kinds of programs that may be appropriate for patent protection and the form and duration of such protection can be answered by Congress on the basis of current empirical data not equally available to this tribunal.").

It is, however, the judicial obligation to assure a correct, just, and reliable judicial process, and particularly to respect the principles of stare decisis in an area in which prior and repeated statutory interpretations have been relied upon by others. See, e.g., Shepard, 544 U.S. at 23 ("[T]he claim to adhere to case law is generally powerful once a decision has settled statutory meaning."); Hilton, 502 U.S. at 202 ("Adherence to precedent promotes stability, predictability, and respect for judicial authority."); Payne, 501 U.S. at 827 ("Stare decisis is the preferred course because it promotes the evenhanded, predictable, and consistent development of legal principles, fosters reliance on judicial decisions, and contributes to the actual and perceived integrity of the judicial process."). These considerations appear to be abandoned.

Uncertain guidance for the future

Not only past expectations, but future hopes, are disrupted by uncertainty as to application of the new restrictions on patent eligibility. For example, the court states that even if a process is "tied to" a machine or transforms matter, the machine or transformation must impose "meaningful limits" and cannot constitute "insignificant extra-solution activity". Maj. op. at 24. We are advised that transformation must be "central to the purpose of the claimed process," id., although we are not told what kinds of transformations may qualify, id. at 25-26. These concepts raise new conflicts with precedent.

This court and the Supreme Court have stated that "there is no legally recognizable or protected 'essential' element, 'gist' or 'heart' of the invention in a combination patent." Allen Eng'g Corp. v. Bartell Industries, Inc., 299 F.3d 1336, 1345 (Fed. Cir. 2002) (quoting Aro Mfg. Co. v. Convertible Top Replacement Co., 365 U.S. 336, 345 (1961)). This rule applies with equal force to process patents, see W.L. Gore & Associates, Inc. v. Garlock, Inc., 721 F.2d 1540, 1548 (Fed. Cir. 1983) (there is no gist of the invention rule for process patents), and is in accord with the rule that the invention must be considered as a whole, rather than "dissected," in assessing its patent eligibility under Section 101, see Diehr, 450 U.S. at 188. It is difficult to predict an adjudicator's view of the "invention as a whole," now that patent examiners and judges are instructed to weigh the different process components for their "centrality" and the "significance" of their "extra-solution activity" in a Section 101 inquiry.

As for whether machine implementation will impose "meaningful limits in a particular case," the "meaningfulness" of computer usage in the great variety of technical and informational subject matter that is computer-facilitated is apparently now a flexible parameter of Section 101. Each patent examination center, each trial court, each panel of this court, will have a blank slate on which to uphold or invalidate claims based on whether there are sufficient "meaningful limits", or whether a transformation is adequately "central," or the "significance" of process steps. These qualifiers, appended to a novel test which itself is neither suggested nor supported by statutory text, legislative history, or judicial precedent, raise more questions than they answer. These new standards add delay, uncertainty, and cost, but do not add confidence in reliable standards for Section 101.

Other aspects of the changes of law also contribute uncertainty. We aren't told when, or if, software instructions implemented on a general purpose computer are deemed "tied" to a "particular machine," for if Alappat's guidance that software converts a general purpose computer into a special purpose machine remains applicable, there is no need for the present ruling. For the thousands of inventors who obtained patents under the court's now-discarded criteria, their property rights are now vulnerable.

The court also avoids saying whether the State Street Bank and AT&T v. Excel inventions would pass the new test. The drafting of claims in machine or process form was not determinative in those cases, for "we consider the scope of § 101 to be the same regardless of the form -- machine or process -- in which a particular claim is drafted." AT&T v. Excel, 172 F.3d at 1357. From either the machine or the transformation viewpoint, the processing of data representing "price, profit, percentage, cost, or loss" in State Street Bank is not materially different from the processing of the Bilski data representing commodity purchase and sale prices, market transactions, and risk positions; yet Bilski is held to fail our new test, while State Street is left hanging. The uncertainty is illustrated in the contemporaneous decision of In re Comiskey, 499 F.3d 1365, 1378-79 (Fed. Cir. 2007), where the court held that "systems that depend for their operation on human intelligence alone" to solve practical problems are not within the scope of Section 101; and In re Nuijten, 500 F.3d 1346, 1353-54 (Fed. Cir. 2007), where the court held that claims to a signal with an embedded digital watermark encoded according to a given encoding process were not directed to statutory subject matter under Section 101, although the claims included "physical but transitory forms of signal transmission such as radio broadcasts, electrical signals through a wire, and light pluses through a fiber-optic cable."

Although this uncertainty may invite some to try their luck in court, the wider effect will be a disincentive to innovation-based commerce. For inventors, investors, competitors, and the public, the most grievous consequence is the effect on inventions not made or not developed because of uncertainty as to patent protection. Only the successes need the patent right.

The Bilski invention has not been examined for patentability

To be patentable, Bilski's invention must be novel and non-obvious, and the specification and claims must meet the requirements of enablement, description, specificity, best mode, etc. See 35 U.S.C. § 101 ("Whoever invents or discovers a new and useful process . . . may obtain a patent therefor, subject to the conditions and requirements of this title."); Diehr, 490 U.S. at 190 (the question of whether an invention is novel is distinct from whether the subject matter is statutory); State Street Bank, 149 F.3d at 1377 ("Whether the patent's claims are too broad to be patentable is not to be judged under § 101, but rather under §§ 102, 103, and 112."). I don't know whether Bilski can meet these requirements -- but neither does this court, for the claims have not been examined for patentability, and no rejections apart from Section 101 are included in this appeal.

Instead, the court states the "true issue before us" is "whether Applicants are seeking to claim a fundamental principle (such as an abstract idea) or mental process," maj. op. at 7, and answers "yes." With respect, that is the wrong question, and the wrong answer. Bilski's patent application describes his process of analyzing the effects of supply and demand on commodity prices and the use of a coupled transaction strategy to hedge against these risks; this is not a fundamental principle or an abstract idea; it is not a mental process or a law of nature. It is a "process," set out in successive steps, for obtaining and analyzing information and carrying out a series of commercial transactions for the purpose of "managing the consumption risk costs of a commodity sold by a commodity provider at a fixed price." Claim 1, preamble.

Because the process Bilski describes employs complex mathematical calculations to assess various elements of risk, any practicable embodiment would be conducted with the aid of a machine -- a programmed computer -- but the court holds that since computer-implementation is not recited in claim 1, for that reason alone the process fails the "machine" part of the court's machine-or-transformation test. Maj. op. at 24. And the court holds that since Bilski's process involves the processing of data concerning commodity prices and supply and demand and other risk factors, the process fails the "transformation" test because no "physical objects or substances" are transformed. Maj. op. at 28-29. The court then concludes that because Bilski's Claim 1 fails the machine-or-transformation test it ipso facto preempts a "fundamental principle" and is thereby barred from the patent system under Section 101: an illogical leap that displays the flaws in the court's analysis.

If a claim is unduly broad, or if it fails to include sufficient specificity, the appropriate ground of rejection is Section 112, for claims must "particularly point out and distinctly claim[]" the invention. See In re Vaeck, 947 F.2d 488, 495-96 (Fed. Cir. 1991) (affirming rejection under Section 112 where "[t]here is no reasonable correlation between the narrow disclosure in applicant's specification and the broad scope of protection sought in the claims"); In re Foster, 438 F.2d 1011, 1016 (C.C.P.A. 1971) (claims "not commensurate with appellants' own definition of what they are seeking to cover" are rejected under Section 112, rather than Section 101); In re Prater, 415 F.2d at 1403-04 (applying Section 112 to claims that included mental steps). The filing of a broader claim than is supported in the specification does not convert the invention into an abstraction and evict the application from eligibility for examination. A broad first claim in a patent application is routine; it is not the crisis event postulated in the court's opinion.

The role of examination is to determine the scope of the claims to which the applicant is entitled. See 37 C.F.R. § 1.104(a). The PTO's regulations provide:

Several amici curiae referred to the difficulties that the PTO has reported in examining patents in areas where the practice has been to preserve secrecy, for published prior art is sparse. The Federal Trade Commission recognized that the problem of "questionable" patents stems mostly from "the difficulty patent examiners can have in considering all the relevant prior art in the field and staying informed about the rapid advance of computer science." FTC, To Promote Innovation: The Proper Balance of Competition & Patent Law and Policy at ch. 3, pp. 44 (Oct. 2003), available at http://www.ftc.gov/os/2003/10/innovationrpt.pdf. However, this problem seems to be remedied, for the PTO reported in 2007 that for Class 705, "[t]he cases the examiners are now working on have noticeably narrower claims" than the cases filed in or before FY 2000. PTO Report at 9. The PTO reports that its search fields have been enlarged, staff added, and supervision augmented. FTC Report at ch. 1, p. 30. ("Since the PTO introduced [these changes] the allowance rate for business method patents has decreased, and the PTO believes that this decreased allowance rate indicates improved PTO searches for prior art."). If this court's purpose now is to improve the quality of issued patents by eliminating access to patenting for large classes of past, present, and future inventions, the remedy would appear to be excessive.

A straightforward, efficient, and ultimately fair approach to the evaluation of "new and useful" processes -- quoting Section 101 -- is to recognize that a process invention that is not clearly a "fundamental truth, law of nature, or abstract idea" is eligible for examination for patentability. I do not suggest that basic scientific discoveries are a proper subject matter of patents (the Court in Chakrabarty mentioned E=mc² and the law of gravity), and I do not attempt an all-purpose definition of the boundary between scientific theory and technological application. But it is rare indeed that a question arises at the boundary of basic science; more usual is the situation illustrated by Samuel Morse's telegraph, in which the Court simply held that Morse's general claim was "too broad," exceeding the scope of his practical application.

Bilski's process for determining risk in commodity transactions does not become an abstraction because it is broadly claimed in his first claim. It may be claimed so broadly that it reads on the prior art, but it is neither a fundamental truth nor an abstraction. Bilski's ten other claims contain further details and limitations, removing them farther from abstraction. Although claim 1 may have been deemed "representative" with respect to Section 101, the differences among the claims may be significant with respect to Sections 102, 103, and 112. Bilski's application, now pending for eleven years, has yet to be examined for patentability.

Patents provide an incentive to invest in and work in new directions. In United States v. Line Materials Co., 333 U.S. 287, 332 (1948), Justice Burton, joined by Chief Justice Vinson and Justice Frankfurter, remarked that "the frontiers of science have expanded until civilization now depends largely upon discoveries on those frontiers to meet the infinite needs of the future. The United States, thus far, has taken a leading part in making those discoveries and in putting them to use." This remains true today. It is antithetical to this incentive to restrict eligibility for patenting to what has been done in the past, and to foreclose what might be done in the future.

² Many amici curiae pointed out that the Supreme Court did not adopt the test that this court now attributes to it. See, e.g., Br. of Amicus Curiae Am. Intellectual Property Law Ass'n at 18 & n.16; Br. of Amicus Curiae Biotechnology Industry Org. at 17-21; Br. of Amicus Curiae Boston Patent Law Ass'n at 6-8; Br. of Amicus Curiae Business Software Alliance at 13; Br. of Amicus Curiae Federal Circuit Bar Ass'n at 21; Br. of Amicus Curiae Regulatory Datacorp, Inc. at 12-13; Br. of Amicus Curiae Accenture at 16-17; Br. of Amicus Curiae Washington State Patent Law Ass'n at 10-11.

³ Scholarly histories include M. Frumkin, The Origin of Patents, 27 J.P.O.S. 143 (1945); E. Wyndham Hulme, Privy Council Law and Practice of Letters Patent for Invention from the Restoration to 1794, 33 L.Q. Rev. 63 (Part I), 180 (Part II) (1917); Hulme, On the History of Patent Law in the Seventeenth and Eighteenth Centuries, 18 L.Q. Rev. 280 (1902); Hulme, The History of the Patent System Under the Prerogative and at Common Law, 12 L.Q. Rev. 141 (1896); Ramon A. Klitzke, Historical Background of the English Patent Law, 41 J.P.O.S 615 (1959); Christine MacLeod, Inventing the Industrial Revolution: The English Patent System 1660-1800 (1988); Frank D. Prager, Historic Background and Foundation of American Patent Law, 5 Am. J. Legal Hist. 309 (1961); Brad Sherman & Lionel Bently, The Making of Modern Intellectual Property Law: The British Experience, 1760-1911 (1999); Edward C. Walterscheid, The Early Evolution of the United States Patent Law: Antecedents, printed serially at J. Pat. & Trademark Off. Soc'y ("J.P.T.O.S.") 76:697 (1994) (Part 1); 76:849 (1994) (Part 2); 77:771, 847 (1995) (Part 3); 78:77 (1996) (Part 4); 78:615 (1996) (Part 5, part I); and 78:665 (1996) (Part 5, part II) (hereinafter "Early Evolution"); and Edward C. Walterscheid, To Promote the Progress of Useful Arts: American Patent Law and Administration, 1798-1836 (1998).

⁴ The PTO recognizes that patents on "business methods" have been eligible subject matter for two centuries. See USPTO White Paper 2 ("Financial patents in the paper-based technologies have been granted continuously for over two hundred years.").

The en banc order in this case asked: "Whether it is appropriate to reconsider State Street Bank & Trust Co. v. Signature Financial Group, Inc., 149 F.3d 1368 (Fed. Cir. 1998), and AT&T Corp. v. Excel Communications, Inc., 172 F.3d 1352 (Fed. Cir. 1999), in this case and, if so, whether those cases should be overruled in any respect?" I would answer that question with an emphatic "yes." The patent system is intended to protect and promote advances in science and technology, not ideas about how to structure commercial transactions. Claim 1 of the application of Bernard L. Bilski and Rand A. Warsaw ("Bilski") is not eligible for patent protection because it is directed to a method of conducting business. Affording patent protection to business methods lacks constitutional and statutory support, serves to hinder rather than promote innovation and usurps that which rightfully belongs in the public domain. State Street and AT&T should be overruled.

There is nothing in the early patent statutes to indicate that Congress intended business methods to constitute patentable subject matter. See Patent Act of 1790 § 4, 1 Stat. 109, 111 (1790); Patent Act of 1793 § 1, 1 Stat. 318, 319 (1793); Pollack, supra at 106 ("[I]f any nation was ripe for invention patents on business methods, it was the newly freed colonies of British North America. . . . [H]owever, no business method patents seem to have been granted."). As early as 1869, the Commissioner of Patents said that "[i]t is contrary . . . to the spirit of the law, as construed by the office for many years, to grant patents for methods of book-keeping," Ex parte Abraham, 1869 Dec. Comm'r Pat. 59, 59 (1869), and by 1893 the courts had concluded that "a method of transacting common business . . . does not seem to be patentable as an art," United States Credit Sys. Co. v. Am. Credit Indem. Co., 53 F. 818, 819 (C.C.S.D.N.Y. 1893), aff'd on other grounds, 59 F. 139 (2d Cir. 1893). By 1952, when Congress enacted the current Patent Act, it was widely acknowledged that methods of doing business were ineligible for patent protection. See, e.g., Loew's Drive-In Theatres, Inc. v. Park-In Theatres, Inc., 174 F.2d 547, 552 (1st Cir. 1949) ("[A] system for the transaction of business . . . however novel, useful, or commercially successful is not patentable apart from the means for making the system practically useful, or carrying it out."); In re Patton, 127 F.2d 324 (CCPA 1942) (noting that "a system of transacting business, apart from the means for carrying out such system" is not patentable); Hotel Sec. Checking Co. v. Lorraine Co., 160 F. 467, 469 (2d Cir. 1908) ("A system of transacting business disconnected from the means for carrying out the system is not, within the most liberal interpretation of the term, an art."); In re Moeser, 27 App. D.C. 307, 310 (1906) (holding that a system for burial insurance contracts was not patentable because "contracts or proposals for contracts, devised or adopted as a method of transacting a particular class of . . . business, [are] not patentable as an art"); see also 145 Cong. Rec. H6,947 (Aug. 3, 1999) (statement of Rep. Manzullo) ("Before the State Street Bank and Trust case . . . it was universally thought that methods of doing or conducting business were not patentable items.").

In passing the 1952 Act, Congress re-enacted statutory language that had long existed,² thus signaling its intent to carry forward the body of case law that had developed under prior versions of the statute. Because there is nothing in the language of the 1952 Act, or its legislative history, to indicate that Congress intended to modify the rule against patenting business methods, we must presume that no change in the rule was intended. See, e.g., Astoria Fed. Sav. & Loan Ass'n v. Solimino, 501 U.S. 104, 108 (1991) ("[W]here a common-law principle is well established . . . the courts may take it as given that Congress has legislated with an expectation that the principle will apply except when a statutory purpose to the contrary is evident." (citations and internal quotation marks omitted)); Isbrandtsen Co. v. Johnson, 343 U.S. 779, 783 (1952) ("Statutes which invade the common law . . . are to be read with a presumption favoring the retention of long-established and familiar principles, except when a statutory purpose to the contrary is evident."); see also In re Schrader, 22 F.3d 290, 295 (Fed. Cir. 1994) ("When Congress approved the addition of the term 'process' to the categories of patentable subject matter in 1952, it incorporated the definition of 'process' that had evolved in the courts." (footnote omitted)). If Congress had wished to change the established practice of disallowing patents on business methods, it was quite capable of doing so explicitly. See Parker v. Flook, 437 U.S. 584, 596 (1978) (stressing that courts "must proceed cautiously when . . . asked to extend patent rights into areas wholly unforeseen by Congress").

State Street's decision to jettison the prohibition against patenting methods of doing business contravenes congressional intent. Because (1) "the framers consciously acted to bar Congress from granting letters patent in particular types of business," Comiskey, 499 F.3d at 1375, and (2) Congress evidenced no intent to modify the long-established rule against business method patents when it enacted the 1952 Patent Act, it is hard to fathom how the issuance of patents on business methods can be supported.

This statement does not support the contention that Congress intended "anything under the sun" to be patentable. To the contrary, the language supports the opposite view: a person may have "invented" anything under the sun, but it is "not necessarily patentable" unless the statutory requirements for patentability have been satisfied. Thus, the legislative history oft-cited to support business method patents undercuts, rather than supports, the notion that Congress intended to extend the scope of section 101 to encompass such methods.

Moreover, the cited legislative history is not discussing process claims at all. The quoted language is discussing "machines" and "manufactures;" it is therefore surprising that it has been thought a fit basis for allowing patents on business processes.

Before State Street led us down the wrong path, this court had rightly concluded that patents were designed to protect technological innovations, not ideas about the best way to run a business.⁴ We had thus rejected as unpatentable a method for coordinating firefighting efforts, Patton, 127 F.2d at 326-27, a method for deciding how salesmen should best handle customers, In re Maucorps, 609 F.2d 481 (CCPA 1979), and a computerized method for aiding a neurologist in diagnosing patients, In re Meyer, 688 F.2d 789 (CCPA 1982).⁵ We stated that patentable processes must "be in the technological arts so as to be in consonance with the Constitutional purpose to promote the progress of 'useful arts.'" In re Musgrave, 431 F.2d 882, 893 (CCPA 1970) (emphasis added).

Business method patents do not promote the "useful arts" because they are not directed to any technological or scientific innovation. Although business method applications may use technology -- such as computers -- to accomplish desired results, the innovative aspect of the claimed method is an entrepreneurial rather than a technological one. Thus, although Bilski's claimed hedging method could theoretically be implemented on a computer, that alone does not render it patentable. See Diehr, 450 U.S. at 192 n.14 (Patentability cannot be established by the "token" use of technology.); Gottschalk v. Benson, 409 U.S. 63, 64-66 (1972) (finding unpatentable a method of programming a general purpose digital computer to convert signals from binary-coded decimal to pure binary form). Where a claimed business method simply uses a known machine to do what it was designed to do, such as using a computer to gather data or perform calculations, use of that machine will not bring otherwise unpatentable subject matter within the ambit of section 101. See Benson, 409 U.S. at 67 (finding a process unpatentable where "[t]he mathematical procedures [could] be carried out in existing computers long in use, no new machinery being necessary").

Although the Supreme Court has not directly addressed the patentability of business methods, several of its decisions implicitly tether patentability to technological innovation. See Pfaff v. Wells Elecs., Inc., 525 U.S. 55, 63 (1998) ("[T]he patent system represents a carefully crafted bargain that encourages both the creation and the public disclosure of new and useful advances in technology, in return for an exclusive monopoly for a limited period of time." (emphasis added)); Markman v. Westview Instruments, Inc., 517 U.S. 370, 390 (1996) ("Congress created the Court of Appeals for the Federal Circuit as an exclusive appellate court for patent cases . . . observing that increased uniformity would strengthen the United States patent system in such a way as to foster technological growth and industrial innovation." (citations and internal quotation marks omitted) (emphasis added)); Benson, 409 U.S. at 71 (refusing to "freeze [the patentability of] process patents to old technologies, leaving no room for the revelations of the new, on rushing technology" (emphases added)). Indeed, the Supreme Court has repeatedly emphasized that what renders subject matter patentable is "the application of the law of nature to a new and useful end." Funk Bros. Seed Co. v. Kalo Inoculant Co., 333 U.S. 127, 130 (1948); see Diehr, 450 U.S. at 188 n.11; Benson, 409 U.S. at 67.⁶ Applying laws of nature to new and useful ends is nothing other than "technology."⁷See, e.g., Microsoft Computer Dictionary 513 (5th ed. 2002) (The definition of "technology" is the "application of science and engineering to the development of machines and procedures in order to enhance or improve human conditions.''); American Heritage Dictionary of the English Language 1777 (4th ed. 2000) ("Technology" is the "application of science, especially to industrial or commercial objectives."); see also Sfekas, supra at 214-15 ("The [Supreme] Court's holdings in Benson and Diehr are really stating a requirement that inventions must be technological."); Schwartz, supra at 357 (The "clear and consistent body of Supreme Court case law establishes that the term 'invention' encompasses anything made by man that utilizes or harnesses one or more 'laws of nature' for human benefit."). As the Supreme Court has made clear, "the act of invention . . . consists neither in finding out the laws of nature, nor in fruitful research as to the operation of natural laws, but in discovering how those laws may be utilized or applied for some beneficial purpose, by a process, a device or a machine." United States v. Dubilier Condenser Corp., 289 U.S. 178, 188 (1933).

Methods of doing business do not apply "the law of nature to a new and useful end." Because the innovative aspect of such methods is an entrepreneurial rather than a technological one, they should be deemed ineligible for patent protection. See, e.g., John R. Thomas, The Patenting of the Liberal Professions, 40 B.C. L. Rev. 1139 (1999) (arguing that affording patentability to business methods opens the door to obtaining patent protection for all aspects of human thought and behavior, and that patents should remain grounded in science and technology) (hereinafter "Thomas (1999)"). "[T]he primary purpose of our patent laws is not the creation of private fortunes for the owners of patents but is 'to promote the progress of science and useful arts.'" Motion Picture Patents Co. v. Universal Film Mfg. Co., 243 U.S. 502, 511 (1917). Although business method patents may do much to enrich their owners, they do little to promote scientific research and technological innovation.

Patents granted in the wake of State Street have ranged from the somewhat ridiculous to the truly absurd. See, e.g., U.S. Patent No. 5,851,117 (method of training janitors to dust and vacuum using video displays); U.S. Patent No. 5,862,223 (method for selling expert advice); U.S. Patent No. 6,014,643 (method for trading securities); U.S. Patent No. 6,119,099 (method of enticing customers to order additional food at a fast food restaurant); U.S. Patent No. 6,329,919 (system for toilet reservations); U.S. Patent No. 7,255,277 (method of using color-coded bracelets to designate dating status in order to limit "the embarrassment of rejection"). There has even been a patent issued on a method for obtaining a patent. See U.S. Patent No. 6,049,811. Not surprisingly, State Street and its progeny have generated a thundering chorus of criticism. See Leo J. Raskind, The State Street Bank Decision: The Bad Business of Unlimited Patent Protection for Methods of Doing Business, 10 Fordham Intell. Prop. Media & Ent. L.J. 61, 61 (1999) ("The Federal Circuit's recent endorsement of patent protection for methods of doing business marks so sweeping a departure from precedent as to invite a search for its justification."); Pollack, supra at 119-20 (arguing that State Street was based upon a misinterpretation of both the legislative history and the language of section 101 and that "business method patents are problematical both socially and constitutionally"); Price, supra at 155 ("The fall out from State Street has created a gold-rush mentality toward patents and litigation in which companies. . . . gobble up patents on anything and everything. . . . It is a mad rush to get as many dumb patents as possible." (citations and internal quotation marks omitted)); Thomas (1999), supra at 1160 ("After State Street, it is hardly an exaggeration to say that if you can name it, you can claim it."); Sfekas, supra at 226 ("[T]he U.S. courts have set too broad a standard for patenting business methods. . . . These business method patents tend to be of lower quality and are unnecessary to achieve the goal of encouraging innovation in business."); William Krause, Sweeping the E-Commerce Patent Minefield: The Need for a Workable Business Method Exception, 24 Seattle U. L. Rev. 79, 101 (2000) (State Street "opened up a world of unlimited possession to anyone quick enough to take a business method and put it to use via computer software before anyone else."); Moy, supra at 1051 ("To call [the situation following State Street] distressing is an understatement. The consensus . . . appears to be that patents should not be issuing for new business methods.").

There are a host of difficulties associated with allowing patents to issue on methods of conducting business. Not only do such patents tend to impede rather than promote innovation, they are frequently of poor quality. Most fundamentally, they raise significant First Amendment concerns by imposing broad restrictions on speech and the free flow of ideas.

Patents should be granted to those inventions "which would not be disclosed or devised but for the inducement of a patent." Id. at 11. Methods of doing business have existed since the earliest days of the Patent Act and have flourished even in the absence of patent protection. See Brian P. Biddinger, Limiting the Business Method Patent: A Comparison and Proposed Alignment of European, Japanese and United States Patent Law, 69 Fordham L. Rev. 2523, 2544-50 (2001). Commentators have argued that "the broad grant of patent protection for methods of doing business is something of a square peg in a sinkhole of uncertain dimensions" since "[n]owhere in the substantial literature on innovation is there a statement that the United States economy suffers from a lack of innovation in methods of doing business." Raskind, supra at 92-93. Instead, "the long history of U.S. business is one of innovation, emulation, and innovation again. It also is a history of remarkable creativity and success, all without business method patents until the past few years." Smith, supra at 178; see also Sfekas, supra at 213 ("While innovation in business methods is a good thing, it is likely that there would be the same level of innovation even without patents on [such methods].").

Business innovations, by their very nature, provide a competitive advantage and thus generate their own incentives. See Xiang, supra at 813 ("A business entity improves the way it does business in order to be more effective and efficient, to stay ahead of [the] competition, and to make more profit."). The rapid "growth of fast food restaurants, self-service gasoline stations, quick oil change facilities . . . automatic teller devices . . . and alternatives for long-distance telephone services" casts real doubt about the need for the additional incentive of patent protection in the commercial realm. Raskind, supra at 93.

Although patents are not a prerequisite to business innovation, they are of undeniable importance in promoting technological advances. For example, the pharmaceutical industry relies on patent protection in order to recoup the large sums it invests to develop life-saving and life-enhancing drugs:

Business method patents, unlike those granted for pharmaceuticals and other products, offer rewards that are grossly disproportionate to the costs of innovation. In contrast to technological endeavors, business innovations frequently involve little or no investment in research and development. Bilski, for example, likely spent only nominal sums to develop his hedging method. The reward he could reap if his application were allowed -- exclusive rights over methods of managing risks in a wide array of commodity transactions -- vastly exceeds any costs he might have incurred in devising his "invention."

It is often consumers who suffer when business methods are patented. See Raskind, supra at 82. Patented products are more expensive because licensing fees are often passed on to consumers. See Lois Matelan, The Continuing Controversy Over Business Method Patents, 18 Fordham Intell. Prop. Med. & Ent. L.J. 189, 201 (2007). Further, as a general matter, "quantity and quality [of patented products] are less than they would be in a competitive market." Dreyfuss, supra at 275.

Patenting business methods makes American companies less competitive in the global marketplace. American companies can now obtain exclusionary rights on methods of conducting business, but their counterparts in Europe and Japan generally cannot. See Biddinger, supra at 2546-47. Producing products in the United States becomes more expensive because American companies, unlike their overseas counterparts, must incur licensing fees in order to use patented business methods:

Furthermore, information about methods of conducting business, unlike information about technological endeavors, is often not documented or published in scholarly journals. See Russell A. Korn, Is Legislation the Answer? An Analysis of the Proposed Legislation for Business Method Patents, 29 Fla. St. U.L. Rev. 1367, 1372-73 (2002). The fact that examiners lack the resources to weed out undeserving applications "has led to the improper approval of a large number of patents, leaving private parties to clean up the mess through litigation." Krause, supra at 97.

Allowing patents to issue on business methods shifts critical resources away from promoting and protecting truly useful technological advances. As discussed previously, the patent office has been deluged with business method applications in recent years. Time spent on such applications is time not spent on applications which claim true innovations. When already overburdened examiners are forced to devote significant time to reviewing large numbers of business method applications, the public's access to new and beneficial technologies is unjustifiably delayed.

Bilski's claimed method consists essentially of two conversations. The first conversation is between a commodity provider and a commodity consumer, while the second conversation is between the provider and "market participants" who have "a counter-risk position to . . . consumers." His claims provide almost no details as to the contents of these conversations.

Like many business method applications, Bilksi's application is very broadly drafted. It covers a wide range of means for "hedging" in commodity transactions. If his application were allowed, anyone who discussed ways to balance market risks in any sort of commodity could face potential infringement liability. By adopting overly expansive standards for patentability, the government enables private parties to impose broad and unwarranted burdens on speech and the free flow of ideas. See Thomas F. Cotter, A Burkean Perspective on Patent Eligibility, 22 Berkeley Tech. L.J. 855, 880-82 (2007) (arguing that overly expansive patent eligibility standards can result in the granting of patents that threaten free speech, privacy and other constitutionally-protected rights); John R. Thomas, The Future of Patent Law: Liberty and Property in the Patent Law, 39 Hous. L. Rev. 569, 589 (2002) (arguing that "the patent law allows private actors to impose more significant restraints on speech than has ever been possible through copyright"); see also Cent. Hudson Gas & Elec. Corp. v. Pub. Serv. Comm'n of New York, 447 U.S. 557, 569-70 (1980) (The First Amendment mandates that restrictions on free speech in commercial transactions be "no more extensive than necessary.").

To the extent that business methods are deemed patentable, individuals can face unexpected potential infringement liability for everyday conversations and commercial interactions. "[I]mplicit in the Patent Clause itself [is the understanding] that free exploitation of ideas will be the rule, to which the protection of a federal patent is the exception." Bonito Boats, Inc. v. Thunder Craft Boats, Inc., 489 U.S. 141, 151 (1989). In the wake of State Street, too many patent holders have been allowed to claim exclusive ownership of subject matter that rightfully belongs in the public domain.

Even as written, Bilski's claim arguably involves a physical transformation. Prior to utilizing Bilski's method, commodity providers and commodity consumers are not involved in transactions to buy and sell a commodity at a fixed rate. By using Bilski's claimed method, however, providers and consumers enter into a series of transactions allowing them to buy and sell a particular commodity at a particular price. Entering into a transaction is a physical process: telephone calls are made, meetings are held, and market participants must physically execute contracts. Market participants go from a state of not being in a commodity transaction to a state of being in such a transaction. The majority, however, fails to explain how this sort of physical transformation is insufficient to satisfy its proposed patent eligibility standard.

The majority suggests that a technological arts test is nothing more that a "short-cut" for its machine-or-transformation test. Ante at 29. To the contrary, however, the two tests are fundamentally different. Consider U.S. Patent No. 7,261,652, which is directed to a method of putting a golf ball, U.S. Patent No. 6,368,227, which is directed to a method of swinging on a swing suspended on a tree branch, and U.S. Patent No. 5,443,036, which is directed to a method of "inducing cats to exercise." Each of these "inventions" involves a physical transformation that is central to the claimed method: the golfer's stroke is changed, a person on a swing starts swinging, and the sedentary cat becomes a fit feline. Thus, under the majority's approach, each of these inventions is patent eligible. Under a technological arts test, however, none of these inventions is eligible for patent protection because none involves any advance in science or technology.⁹

Regardless of whether a claimed process involves a "physical transformation," it should not be patent eligible unless it is directed to an advance in science or technology. See Benson, 409 U.S. at 64-71 (finding a process unpatentable even though it "transformed" binary-coded decimals into pure binary numbers using a general purpose computer). Although the Supreme Court has stated that a patentable process will usually involve a transformation of physical matter, see id. at 70, it has never found a process patent eligible which did not involve a scientific or technological innovation. See Diehr, 450 U.S. at 192-93 (finding a process patentable where it involved new technology for curing rubber).

The majority refuses to inject a technology requirement into the section 101 analysis because it believes that the terms "technological arts" and "technology" are "ambiguous." See ante at 21. To the contrary, however, the meaning of these terms is not particularly difficult to grasp. "The need to apply some sort of 'technological arts' criterion has hardly led other countries' and regions' patent systems to grind to a halt; it is hard to see why it should be an insurmountable obstacle for ours." Cotter, supra at 885. As discussed more fully in section III, a claimed process is technological to the extent it applies laws of nature to new ends. See Benson, 409 U.S. at 67 ("'If there is to be invention from . . . a discovery, it must come from the application of the law of nature to a new and useful end.'" (quoting Funk Bros., 333 U.S. at 130)). By contrast, a process is non-technological where its inventive concept is the application of principles drawn not from the natural sciences but from disciplines such as business, law, sociology, or psychology. See Thomas (1999), supra at 1168 ("[F]ew of us would suppose that inventions within the domain of business, law or fine arts constitute technology, much less patentable technology."). The inventive aspect of Bilski's claimed process is the application of business principles, not laws of nature; it is therefore non-technological and ineligible for patent protection.

Unlike a technological standard for patentability, the majority's proposed test will be exceedingly difficult to apply. The standard that the majority proposes for inclusion in the patentability lexicon -- "transformation of any physical object or substance, or an electronic signal representative of any physical object or substance," ante at 28 -- is unnecessarily complex and will only lead to further uncertainty regarding the scope of patentable subject matter. As noted in In re Nuijten, 500 F.3d 1346, 1353 (Fed. Cir. 2007), defining the term "physical" can be an "esoteric and metaphysical" inquiry. Indeed, although this court has struggled for years to set out what constitutes sufficient physical transformation to render a process patentable, we have yet to provide a consistent or satisfactory resolution of this issue.

We took this case en banc in a long-overdue effort to resolve primal questions on the metes and bounds of statutory subject matter. The patent system has run amok, and the USPTO, as well as the larger patent community, has actively sought guidance from this court in making sense of our section 101 jurisprudence. See Supplemental Br. of Appellee at 3 ("[The Federal Circuit] should clarify the meaning of State Street and AT&T, as they have been too often misunderstood."); Br. of Fin. Serv. Indus. at 1 ("The rise of [business method patents] in recent years has . . . led to uncertainty over the scope of the patents granted and, more fundamentally, the definition of patentable subject matter itself. [We] seek a workable standard defining the scope of patentable subject matter, one that . . . provides clear guidance to the Patent and Trademark Office . . . and the public."); Br. of Samuelson Law, Tech. and Public Policy Clinic at 1 ("Ever since State Street, the [USPTO] has been flooded with applications for a wide variety of non-technological 'inventions' such as arbitration methods, dating methods, tax-planning methods, legal methods, and novel-writing methods. These applications have eroded public confidence in the patent system and driven up the cost and decreased the return for applicants seeking legitimate technological patents." (footnote omitted)); Br. of Assoc. of Am. Medical Colleges at 29 (arguing that "broad swaths of the public and certain industry sectors" have lost respect for the patent system and that "[the Federal Circuit] should act, even if its actions mean unsettling the settled expectations of some"). The majority, however, fails to enlighten three of the thorniest issues in the patentability thicket: (1) the continued viability of business method patents, (2) what constitutes sufficient physical transformation or machine-implementation to render a process patentable, and (3) the extent to which computer software and computer-implemented processes constitute statutory subject matter. The majority's "measured approach" to the section 101 analysis, see ante at 25, will do little to restore public confidence in the patent system or stem the growth of patents on business methods and other non-technological ideas.

² Congress did substitute the word "process" for "art" in the 1952 Act, but "[a]nalysis of the eligibility of a claim of patent protection for a 'process' did not change with the addition of that term to § 101." Diamond v. Diehr, 450 U.S. 175, 184 (1981).

³ Article I, § 8 provides that "The Congress shall have Power . . . To promote the Progress of Science and useful Arts by securing for limited Times to Authors and Inventors the exclusive Right to their respective Writings and Discoveries." The patent power "is the only one of the several powers conferred upon the Congress which is accompanied by a specific statement of the reason for it." Yaun, 188 F.2d at 380.

⁴ "[D]espite the assertions in State Street and Schrader, very few in the patent community believe that business methods have always been patentable. To the contrary, the dominant view is that the law has changed, and that the definition of patentable subject matter is now wider than it once was." R. Carl Moy, Subjecting Rembrandt to the Rule of Law: Rule-Based Solutions for Determining the Patentability of Business Methods, 28 Wm. Mitchell L. Rev. 1047, 1060 (2002) (footnotes omitted); see also Rochelle Cooper Dreyfuss, Are Business Method Patents Bad for Business?, 16 Santa Clara Computer & High Tech. L.J. 263, 265-66 (2000) (State Street gave "judicial recognition to business method patents."). Over the course of two centuries, a few patents issued on what could arguably be deemed methods of doing business, see, e.g., U.S. Patent No. 5,664,115 ("Interactive Computer System to Match Buyers and Sellers of Real Estate, Businesses and Other Property Using the Internet"), but these patents were aberrations and the general rule, prior to State Street, was that methods of engaging in business were ineligible for patent protection. See Comiskey, 499 F.3d at 1374 (noting that "[a]t one time, '[t]hough seemingly within the category of process or method, a method of doing business [was] rejected as not being within the statutory classes.'" (quoting State Street, 149 F.3d at 1377)). One commentator has noted that although the United States Patent and Trademark Office ("USPTO") "in an attempt to deflect criticism [has] issued an apologia . . . asserting that business method patents are as old as the United States patent system," this document is fundamentally flawed. See Pollack, supra at 73-75. She explains:

⁵ The claims in Patton were explicitly rejected on the basis that they were directed to a business method, while the claims in Maucorps and Meyer were rejected as attempts to patent mathematical algorithms. Subsequently, however, this court stated that the claimed processes in Maucorps and Meyer were directed toward business systems and should therefore not be considered patent eligible. In re Alappat, 33 F.3d 1526, 1541 (Fed. Cir. 1994) (en banc). We noted that "Maucorps dealt with a business methodology for deciding how salesmen should best handle respective customers and Meyer involved a 'system' for aiding a neurologist in diagnosing patients. Clearly, neither of the alleged 'inventions' in those cases falls within any § 101 category." Id.

⁶ Laws of nature are those laws pertaining to the "natural sciences," such as biology, chemistry, or physics. See, e.g., Webster's New International Dictionary 1507 (3d ed. 2002) ("Natural sciences" are the "branches of science ([such] as physics, chemistry, [or] biology) that deal with matter, energy, and their interrelations and transformations or with objectively measured phenomena."). They must be distinguished from other types of law, such as laws of economics or statutory enactments. Laws of nature do not involve "judgments on human conduct, ethics, morals, economics, politics, law, aesthetics, etc." Musgrave, 431 F.2d at 890; see also Joy Y. Xiang, How Wide Should the Gate of "Technology" Be? Patentability of Business Methods in China, 11 Pac. Rim L. & Pol'y J. 795, 807 (2002) (noting that State Street's "'useful, concrete and tangible result' test is inconsistent with the 'application of the law of nature' patent eligibility scope outlined by the U.S. Supreme Court and [the Federal Circuit prior to State Street ].").

⁷ One commentator notes that both Japan and the Republic of Korea explicitly define an "invention" as the application of a law of nature, and argues that the United States should follow a similar approach to patentability. See Andrew A. Schwartz, The Patent Office Meets the Poison Pill: Why Legal Methods Cannot be Patented, 20 Harv. J. Law & Tech. 333, 357 (2007).

⁸ Congress has acted to ameliorate some of the negative effects of granting patents on methods of doing business. It passed the American Inventors Protection Act (commonly referred to as the First Inventor Defense Act) which provides an affirmative defense against a business method patent infringement action if the defendant "acting in good faith, actually reduced the subject matter to practice at least 1 year before the effective filing date of such patent, and commercially used the subject matter before the effective filing date of such patent." See 35 U.S.C. § 273. Even where a defendant may qualify for this defense, however, he "still must engage in expensive litigation where [he] bears the burden of affirmatively raising and proving the defense." See Nicholas A. Smith, Business Method Patents and Their Limits: Justifications, History, and the Emergence of A Claim Construction Jurisprudence, 9 Mich. Telecomm. & Tech. L. Rev. 171, 199 (2002).

⁹ The majority's approach will encourage rent-seeking on a broad range of human thought and behavior. For example, because organizing a country into a democratic or socialist regime clearly involves a physical transformation, what is to prevent patents from issuing on forms of government?

This court labors for page after page, paragraph after paragraph, explanation after explanation to say what could have been said in a single sentence: "Because Bilski claims merely an abstract idea, this court affirms the Board's rejection." If the only problem of this vast judicial tome were its circuitous path, I would not dissent, but this venture also disrupts settled and wise principles of law.

Much of the court's difficulty lies in its reliance on dicta taken out of context from numerous Supreme Court opinions dealing with the technology of the past. In other words, as innovators seek the path to the next techno-revolution, this court ties our patent system to dicta from an industrial age decades removed from the bleeding edge. A direct reading of the Supreme Court's principles and cases on patent eligibility would yield the one-sentence resolution suggested above. Because this court, however, links patent eligibility to the age of iron and steel at a time of subatomic particles and terabytes, I must respectfully dissent.

The modern incarnation of section 101 holds fast to that principle, setting forth the broad categories of patent eligible subject matter, and conditioning patentability on the characteristics, not the category, of the claimed invention:

In Diehr, the Supreme Court adopted a very useful algorithm for determining patentable subject matter, namely, follow the Patent Act itself. After setting forth the procedural history of that case, the Supreme Court stated: "In cases of statutory construction, we begin with the language of the statute." Diehr, 450 U.S. at 182. With an eye to the Benson language (so central to this court's reasoning) that "[t]ransformation and reduction of an article 'to a different state or thing' is the clue to the patentability of a process claim that does not include particular machines," Gottschalk v. Benson, 409 U.S. 63, 72 (1972), the Court then noted:

Read in context, section 101 gives further reasons for interpretation without innovation. Specifically, section 101 itself distinguishes patent eligibility from the conditions of patentability -- providing generously for patent eligibility, but noting that patentability requires substantially more. The language sweeps in "any new and useful process . . . [and] any improvement." 35 U.S.C. § 101 (emphasis supplied). As an expansive modifier, "any" embraces the broad and ordinary meanings of the term "process," for instance. The language of section 101 conveys no implication that the Act extends patent protection to some subcategories of processes but not others. It does not mean "some" or even "most," but all.

Unlike the laws of other nations that include broad exclusions to eligible subject matter, such as European restrictions on software and other method patents, see European Patent Convention of 1973, Art. 52(2)(c) and (3), and prohibitions against patents deemed contrary to the public morality, see id. at Art. 53(a), U.S. law and policy have embraced advances without regard to their subject matter. That promise of protection, in turn, fuels the research that, at least for now, makes this nation the world's innovation leader.

This court, which reads the fine print of Supreme Court decisions from the Industrial Age with admirable precision, misses the real import of those decisions. The Supreme Court has answered the fundamental question above many times. The Supreme Court has counseled that the only limits on eligibility are inventions that embrace natural laws, natural phenomena, and abstract ideas. See, e.g., Diehr, 450 U.S. at 185 ("This Court has undoubtedly recognized limits to § 101 and every discovery is not embraced within the statutory terms. Excluded from such patent protection are laws of nature, natural phenomena, and abstract ideas."). In Diehr, the Supreme Court's last pronouncement on eligibility for "processes," the Court said directly that its only exclusions from the statutory language are these three common law exclusions: "Our recent holdings . . . stand for no more than these long-established principles." Id. at 185.

This point deserves repetition. The Supreme Court stated that all of the transformation and machine linkage explanations simply restated the abstractness rule. In reading Diehr to suggest a non-statutory transformation or preemption test, this court ignores the Court's admonition that all of its recent holdings do no more than restate the natural laws and abstractness exclusions. Id.; see also Chakrabarty, 447 U.S. at 310 ("Here, by contrast, the patentee has produced a new bacterium with markedly different characteristics from any found in nature and one having the potential for significant utility. His discovery is not nature's handiwork, but his own; accordingly it is patentable subject matter under § 101."); Parker v. Flook, 437 U.S. 584, 591-594 (1978) ("Even though a phenomenon of nature or mathematical formula may be well known, an inventive application of the principle may be patented. Conversely, the discovery of such a phenomenon cannot support a patent unless there is some other inventive concept in its application."); In re Taner, 681 F.2d 787, 791 (C.C.P.A 1982) ("In Diehr, the Supreme Court made clear that Benson stands for no more than the long-established principle that laws of nature, natural phenomena, and abstract ideas are excluded from patent protection.").

The abstractness and natural law preclusions not only make sense, they explain the purpose of the expansive language of section 101. Natural laws and phenomena can never qualify for patent protection because they cannot be invented at all. After all, God or Allah or Jahveh or Vishnu or the Great Spirit provided these laws and phenomena as humanity's common heritage. Furthermore, abstract ideas can never qualify for patent protection because the Act intends, as section 101 explains, to provide "useful" technology. An abstract idea must be applied to (transformed into) a practical use before it qualifies for protection. The fine print of Supreme Court opinions conveys nothing more than these basic principles. Yet this court expands (transforms?) some Supreme Court language into rules that defy the Supreme Court's own rule.

When considering the eligibility of "processes," this court should focus on the potential for an abstract claim. Such an abstract claim would appear in a form that is not even susceptible to examination against prior art under the traditional tests for patentability. Thus this court would wish to ensure that the claim supplied some concrete, tangible technology for examination. Indeed the hedging claim at stake in this appeal is a classic example of abstractness. Bilski's method for hedging risk in commodities trading is either a vague economic concept or obvious on its face. Hedging is a fundamental economic practice long prevalent in our system of commerce and taught in any introductory finance class. In any event, this facially abstract claim does not warrant the creation of new eligibility exclusions.

The distinction between "phenomena of nature," "mental processes," and "abstract intellectual concepts" is not difficult to draw. The fundamental error in that Lab Corp. dissent is its failure to recognize the difference between a patent ineligible relationship -- i.e., that between high homocysteine levels and folate and cobalamin deficiencies -- and a patent eligible process for applying that relationship to achieve a useful, tangible, and concrete result -- i.e., diagnosis of potentially fatal conditions in patients. Nothing abstract here. Moreover, testing blood for a dangerous condition is not a natural phenomenon, but a human invention.

The distinction is simple but critical: A patient may suffer from the unpatentable phenomenon of nature, namely high homocysteine levels and low folate. But the invention does not attempt to claim that natural phenomenon. Instead the patent claims a process for assaying a patient's blood and then analyzing the results with a new process that detects the life-threatening condition. Moreover, the sick patient does not practice the patented invention. Instead the patent covers a process for testing blood that produces a useful, concrete, and tangible result: incontrovertible diagnostic evidence to save lives. The patent does not claim the patent ineligible relationship between folate and homocysteine, nor does it foreclose future inventors from using that relationship to devise better or different processes. Contrary to the language of the dissent, it is the sick patient who "embod[ies] only the correlation between homocysteine and vitamin deficiency," Lab. Corp., 548 U.S. at 137, not the claimed process.

From the standpoint of policy, the Lab Corp. dissent avoids the same fundamental question that the Federal Circuit does not ask or answer today: Is this entire field of subject matter undeserving of incentives for invention? If so, why? In the context of Lab. Corp. that question is very telling: the natural condition diagnosed by the invention is debilitating and even deadly. See U.S. Patent No. 4,940,658, col. 1, ll. 32-40 ("Accurate and early diagnosis of cobalamin and folate deficiencies . . . is important because these deficiencies can lead to life-threatening hematologic abnormalities. . . . Accurate and early diagnosis of cobalamin deficiency is especially important because it can also lead to incapacitating and life-threatening neuropsychiatric abnormalities."). Before the invention featured in Lab Corp., medical science lacked an affordable, reliable, and fast means to detect this debilitating condition. Denial of patent protection for this innovation -- precisely because of its elegance and simplicity (the chief aims of all good science) -- would undermine and discourage future research for diagnostic tools. Put another way, does not Patent Law wish to encourage researchers to find simple blood tests or urine tests that predict and diagnose breast cancers or immunodeficiency diseases? In that context, this court might profitably ask whether its decisions incentivize research for cures and other important technical advances. Without such attention, this court inadvertently advises investors that they should divert their unprotectable investments away from discovery of "scientific relationships" within the body that diagnose breast cancer or Lou Gehrig's disease or Parkinson's or whatever.

One final point, reading section 101 as it is written will not permit a flurry of frivolous and useless inventions. Even beyond the exclusion for abstractness, the final clause of section 101 -- "subject to the conditions and requirements of this title" -- ensures that a claimed invention must still satisfy the "conditions and requirements" set forth in the remainder title 35. Id. These statutory conditions and requirements better serve the function of screening out unpatentable inventions than some vague "transformation" or "proper machine link" test.

In simple terms, the statute does not mention "transformations" or any of the other Industrial Age descriptions of subject matter categories that this court endows with inordinate importance today. The Act has not empowered the courts to impose limitations on patent eligible subject matter beyond the broad and ordinary meaning of the terms process, machine, manufacture, and composition of matter. It has instead preserved the promise of patent protection for still unknown fields of invention.

Innovation has moved beyond the brick and mortar world. Even this court's test, with its caveats and winding explanations seems to recognize this. Today's software transforms our lives without physical anchors. This court's test not only risks hobbling these advances, but precluding patent protection for tomorrow's technologies. "We still do not know one thousandth of one percent of what nature has revealed to us." Attributed to Albert Einstein. If this court has its way, the Patent Act may not incentivize, but complicate, our search for the vast secrets of nature. When all else fails, consult the statute.