Source: https://www.law.cornell.edu/uscode/text/35/6
Timestamp: 2019-04-19 14:35:30+00:00

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conduct inter partes reviews and post-grant reviews pursuant to chapters 31 and 32.
Each appeal, derivation proceeding, post-grant review, and inter partes review shall be heard by at least 3 members of the Patent Trial and Appeal Board, who shall be designated by the Director. Only the Patent Trial and Appeal Board may grant rehearings.
The Secretary of Commerce may, in the Secretary’s discretion, deem the appointment of an administrative patent judge who, before the date of the enactment of this subsection, held office pursuant to an appointment by the Director to take effect on the date on which the Director initially appointed the administrative patent judge. It shall be a defense to a challenge to the appointment of an administrative patent judge on the basis of the judge’s having been originally appointed by the Director that the administrative patent judge so appointed was acting as a de facto officer.
The date of the enactment of this subsection, referred to in subsec. (d), probably means the date of enactment of Pub. L. 112–29, which amended this section generally and was approved Sept. 16, 2011.
A prior section 6, acts July 19, 1952, ch. 950, 66 Stat. 793; Pub. L. 92–132, Oct. 5, 1971, 85 Stat. 364; Pub. L. 93–596, § 1, Jan. 2, 1975, 88 Stat. 1949; Pub. L. 94–131, § 2, Nov. 14, 1975, 89 Stat. 690; Pub. L. 97–247, §§ 7, 13, Aug. 27, 1982, 96 Stat. 320, 321; Pub. L. 102–204, § 8, Dec. 10, 1991, 105 Stat. 1641, related to duties of Commissioner, prior to repeal by Pub. L. 106–113, div. B, § 1000(a)(9) [title IV, §§ 4715(a), 4731], Nov. 29, 1999, 113 Stat. 1536, 1501A–580, 1501A–581, effective 4 months after Nov. 29, 1999.
2011—Pub. L. 112–29 amended section generally. Prior to amendment, section related to the establishment, composition, and function of the Board of Patent Appeals and Interferences and to the appointment of administrative patent judges.
2008—Subsec. (a). Pub. L. 110–313, § 1(a)(1)(A), (B), substituted “Deputy Director” for “Deputy Commissioner” in second sentence and “Secretary of Commerce, in consultation with the Director” for “Director” in last sentence.
Subsecs. (c), (d). Pub. L. 110–313, § 1(a)(1)(C), which directed addition of subsecs. (c) and (d) at end of subsec. (a), was executed by adding subsecs. (c) and (d) at end of section to reflect the probable intent of Congress.
2002—Subsec. (a). Pub. L. 107–273, which directed amendment of subsec. (a) by inserting “the Deputy Commissioner,” after “Commissioner,”, was executed by making the insertion after “The Director,” to reflect the probable intent of Congress.
Section effective 4 months after Nov. 29, 1999, see section 1000(a)(9) [title IV, § 4731] of Pub. L. 106–113, set out as an Effective Date of 1999 Amendment note under section 1 of this title.

References: § 1
 § 2
 § 8
 § 1000
 § 1
 § 1
 § 4731