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New Directions in Patenting Process Inventions

By David Varn
June 28, 2006

35 U.S.C. '101 defines processes, machines, manufactures, and compositions of matter as the categories of inventions that can be the subject matter of a patent. 35 U.S.C. '100(b) defines the term 'process' to mean 'process, art, or method, and includes a new use of a known process, machine, manufacture, composition of matter, or material.' Section 101 also requires that the subject matter sought to be patented be 'useful.'

'[P]rocesses represent an especially troublesome type of invention ' because almost anything can be claimed as a series of steps that technically can be considered a process, but the term process is so broad that it can be used to claim inventions that cover nothing more than human conduct or thought processes that are totally unrelated to any science or technology.' Ex Parte Lundgren, Appeal no. 2003-2088 (U.S. Patent and Trademark Office ('PTO') Board of Patent Appeals and Interferences ('BPAI'), 2005), at p. 10.

Courts excepted from the above statutory categories of patentable subject matter 'a patent on the [idea, law of nature or natural phenomena] itself.' Gottschalk v. Benson, 409 U.S. 63, 71-72 (1972). Nonetheless, methods and products employing abstract ideas, natural phenomena, and laws of nature to perform a real-world function may be patentable. See PTO Interim Guidelines for Examination of Patent Applications for Patent Subject Matter Eligibility ('Guidelines'), Official Gazette Notices, Nov. 22, 2005. Recently, the PTO and federal courts have refined the contours of patentable subject matter for process inventions through case law and the Guidelines.

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