; and (2) by adding at the end the following: (b) Timing on remand after appeal Not later than 120 days after the date on which a mandate issues from the court remanding to the Patent Trial and Appeal Board after an appeal under subsection (a), the Board or the Director shall finally decide any issue on remand, except that the Director may, for good cause shown, extend that 120-day period by not more than 60 days. . 5. Post-grant review (a) Real parties in interest Section 321 of title 35, United States Code, is amended by adding at the end the following: (d) Real party in interest 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, a post-grant review on behalf of a petitioner shall be considered a real party in interest of that petitioner. . (b) Timing To issue decisions on rehearing Section 324 of title 35, United States Code, is amended by adding at the end the following: (f) Rehearing Not later than 45 days after the date on which a request for rehearing from a determination by the Director under subsection (c) is filed, the Director shall finally decide any request for reconsideration, rehearing, or review with respect to the determination, except that the Director may, for good cause shown, extend that 45-day period by not more than 30 days. . (c) Eliminating repetitive proceedings Section 325 of title 35, United States Code, is amended— (1) by redesignating subsections (c) through (f) as subsections (d) through (g), respectively