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Software patents under United States patent law
Neither software nor computer programs are explicitly mentioned in statutory United States patent law. Patent law has changed to address new technologies, and decisions of the United States Supreme Court and United States Court of Appeals for the Federal Circuit (CAFC) beginning in the latter part of the 20th century have sought to clarify the boundary between patent-eligible and patent-ineligible subject matter for a number of new technologies including computers and software. The first computer software case in the Supreme Court was ''Gottschalk v. Benson'' in 1972. Since then, the Supreme Court has decided about a half dozen cases touching on the patent eligibility of software-related inventions.
The eligibility of software, as such, for patent protection has been only scantily addressed in the courts〔However, a recent nonprecedential decision of the Federal Circuit held that software as such is not patent eligible. ''Allvoice Developments US, LLC v. Microsoft Corp.'' (Nonprecedential May 22, 2015).〕 or in legislation.〔There has been legislation addressing business method patents, however, which are almost always based on software. The America Invents Act (AIA), for example, created new procedures for post-grant challenges to patents on "Covered Business Methods" (CBMs). See generally ''Intellectual Ventures II LLC v. JPMorgan Chase & Co.'', 781 F.3d 1372 (Fed. Cir. 2015).〕 In fact, in the recent Supreme Court decision in ''Alice v. CLS Bank'', the Court painstakingly avoided the issue, and one Justice in the oral argument repeatedly insisted that it was unnecessary to reach the issue.〔''Alice Corp. Pty. Ltd. v. CLS Bank Int'l'', 573 U.S. ___ (2014). During oral argument, Justice Sotomayor repeatedly asked counsel whether Alice was a software case: "Why do we need to reach . . . software patents at all in this case?"; "What's the necessity for us to announce a general rule with respect to software? There is no software being patented in this case."; "Do you think we have to reach the patentability of software to answer this case?" The Court's opinion in ''Alice'' does not discuss the patent eligibility of software as such.〕 The expression "software patent" itself has not been clearly defined. The United States Patent and Trademark Office (USPTO) has permitted patents to be issued on nothing more than a series of software computer instructions, but the latest Federal Circuit decision on the subject invalidated such a patent. The court held that software instructions as such were too intangible to fit within any of the statutory categories such as machines or articles of manufacture.〔''Allvoice Developments US, LLC v. Microsoft Corp.'' (Fed. Cir. May 22, 2015). The Supreme Court had held previously that software in algorithm form without machine implementation could not be patented in process format, see ''Gottschalk v. Benson'' and ''Parker v. Flook'', but could be patented when claimed as a machine inventively using software, see ''Diamond v. Diehr''.〕
On June 19, 2014 the United States Supreme Court ruled in ''Alice Corp. v. CLS Bank International'' that "merely requiring generic computer implementation fails to transform () abstract idea into a patent-eligible invention." 〔http://abcnews.go.com/Technology/wireStory/supreme-court-tosses-software-patent-24210428〕〔http://www.washingtonpost.com/blogs/the-switch/wp/2014/06/19/the-supreme-court-has-unanimously-struck-down-a-software-patent-that-everyone-agreed-was-terrible/〕〔http://www.forbes.com/sites/danielfisher/2014/06/19/patent-lawyers-software-companies-like-alice-corp-ruling-trolls-not-so-much/〕
The ruling continued:
() the mere recitation of a generic computer cannot transform a patent-ineligible abstract idea into a patent-eligible invention. Stating an abstract idea “while adding the words ‘apply it’” is not enough for patent eligibility.” an abstract idea “on . . . a computer,” [] that addition cannot impart patent eligibility.
==Law==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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