; and (ii) any process that cannot be practically performed without the use of a machine (including a computer) or manufacture shall be eligible for patent coverage. 3. Patent eligibility (a) In general Chapter 10 of title 35, United States Code, is amended— (1) in section 100— (A) in subsection (b), by striking includes a new use of a known process and inserting includes a use, application, or method of manufacture of a known or naturally-occurring process ; and (B) by adding at the end the following: (k) The term useful means, with respect to an invention or discovery, that the invention or discovery has a specific and practical utility from the perspective of a person of ordinary skill in the art to which the invention or discovery pertains. ; and (2) by amending section 101 to read as follows: 101. Patent eligibility (a) In general Whoever invents or discovers any useful process, machine, manufacture, or composition of matter, or any useful improvement thereof, may obtain a patent therefor, subject only to the exclusions in subsection (b) and to the further conditions and requirements of this title. (b) Eligibility exclusions (1) In general Subject to paragraph (2), a person may not obtain a patent for any of the following, if claimed as such: (A) A mathematical formula that is not part of a claimed invention in a category described in subsection (a). (B) (i) Subject to clause (ii), a process that is substantially economic, financial, business, social, cultural, or artistic, even though not less than 1 step in the process refers to a machine or manufacture. (ii) The process described in clause (i) shall not be excluded from eligibility for a patent if the process cannot practically be performed without the use of a machine or manufacture. (C) A process that— (i) is a mental process performed solely in the human mind