; or (C) the institution decision is manifestly erroneous. . (f) Eliminating repetitive proceedings Section 315(e) of title 35, United States Code, is amended to read as follows: (e) Estoppel (1) Proceedings before the office A person petitioning for an inter partes review of a claim in a patent under this chapter, or the real party in interest or privy of the petitioner, may not petition for a subsequent inter partes review before the Office with respect to that patent on any ground that the petitioner raised or reasonably could have raised in the initial petition, unless, after the filing of the initial petition, the petitioner, or the real party in interest or privy of the petitioner, is charged with infringement of additional claims of the patent. (2) Civil actions and other proceedings A person petitioning for an inter partes review of a claim in a patent under this chapter that results in an institution decision under section 314, or the real party in interest or privy of the petitioner, may not assert either in a civil action arising in whole or in part under section 1338 of title 28 or in a proceeding before the International Trade Commission under section 337 of the Tariff Act of 1930 ( 19 U.S.C. 1337 ) that the claim is invalid based on section 102 or 103 of this title, unless the invalidity argument is based on allegations that the claimed invention was in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. . (g) Real party in interest (1) Clarification of definition Section 315 of title 35, United States Code, is amended by adding at the end the following new subsection: (f) Petitioner For purposes of this chapter, a person that directly or through an affiliate, subsidiary, or proxy, makes a financial contribution to the preparation for, or conduct during, an inter partes review on behalf of the petitioner shall be considered a real party in interest of the petitioner. . (2) Discovery of real party in interest Section 316(a)(5) of title