35 U.S.C. § 312
Section 312 · Determination of issue by Director
Amended 3 times on record
Applied in 60 court decisions — leading case In re Cuozzo Speed Technologies, LLC (2015)
Most recently applied in Dolby Laboratories Licensing Corporation v. Unified Patents, LLC (June 2025)
Applied most in the Federal Circuit Circuit (33 decisions)
How often courts cite this section
Court decisions citing this, by year.Markers show enactment, consequential amendments, and circuit splits over this section — watch for a citation surge after a change or a disagreement. The dip in the last several years is a data-coverage gap, not a real trend — our corpus holds fewer opinions from the most recent years, so recent citations are undercounted.
(a) Reexamination.—Not later than 3 months after the filing of a request for inter partes reexamination under section 311, the Director shall determine whether the information presented in the request shows that there is a reasonable likelihood that the requester would prevail with respect to at least 1 of the claims challenged in the request, with or without consideration of other patents or printed publications. A showing that there is a reasonable likelihood that the requester would prevail with respect to at least 1 of the claims challenged in the request is not precluded by the fact that a patent or printed publication was previously cited by or to the Office or considered by the Office.
(b) Record.—A record of the Director's determination under subsection (a) shall be placed in the official file of the patent, and a copy shall be promptly given or mailed to the owner of record of the patent and to the third-party requester.
(c) Final Decision.—A determination by the Director under subsection (a) shall be final and non-appealable. Upon a determination that the showing required by subsection (a) has not been made, the Director may refund a portion of the inter partes reexamination fee required under section 311.
Editorial notes U.S. Code · Office of the Law Revision Counsel
Amendment of Section
Pub. L. 112–29, §6(a), (c)(2), Sept. 16, 2011, 125 Stat. 300, 304, provided that, effective upon the expiration of the 1-year period beginning on Sept. 16, 2011, and applicable to any patent issued before, on, or after that effective date, with provisions for graduated implementation, this section is amended to read as follows:
§312. Petitions
(a) Requirements of Petition.—A petition filed under section 311 may be considered only if—
(1) the petition is accompanied by payment of the fee established by the Director under section 311;
(2) the petition identifies all real parties in interest;
(3) the petition identifies, in writing and with particularity, each claim challenged, the grounds on which the challenge to each claim is based, and the evidence that supports the grounds for the challenge to each claim, including—
(A) copies of patents and printed publications that the petitioner relies upon in support of the petition; and
(B) affidavits or declarations of supporting evidence and opinions, if the petitioner relies on expert opinions;
(4) the petition provides such other information as the Director may require by regulation; and
(5) the petitioner provides copies of any of the documents required under paragraphs (2), (3), and (4) to the patent owner or, if applicable, the designated representative of the patent owner.
(b) Public Availability.—As soon as practicable after the receipt of a petition under section 311, the Director shall make the petition available to the public.
See 2011 Amendment note below.
Amendments
2011—Pub. L. 112–29, §6(a), amended section generally. Prior to amendment, section related to determination of issue by Director.
Subsec. (a). Pub. L. 112–29, §6(c)(3)(A)(i)(I), substituted “the information presented in the request shows that there is a reasonable likelihood that the requester would prevail with respect to at least 1 of the claims challenged in the request,” for “a substantial new question of patentability affecting any claim of the patent concerned is raised by the request,” and “A showing that there is a reasonable likelihood that the requester would prevail with respect to at least 1 of the claims challenged in the request” for “The existence of a substantial new question of patentability”.
Subsec. (c). Pub. L. 112–29, §6(c)(3)(A)(i)(II), substituted “the showing required by subsection (a) has not been made,” for “no substantial new question of patentability has been raised,”.
2002—Pub. L. 107–273, §13202(c)(1), made technical correction to directory language of Pub. L. 106–113, which enacted this section.
Subsec. (a). Pub. L. 107–273, §13202(a)(2)(A), struck out second sentence which read as follows: “On the Director's initiative, and at any time, the Director may determine whether a substantial new question of patentability is raised by patents and publications.”
Pub. L. 107–273, §13105(a), inserted at end “The existence of a substantial new question of patentability is not precluded by the fact that a patent or printed publication was previously cited by or to the Office or considered by the Office.”
Subsec. (b). Pub. L. 107–273, §13202(a)(2)(B), struck out “, if any” after “third-party requester”.
Effective Date of 2011 Amendment
Amendment by section 6(a) of Pub. L. 112–29 effective upon the expiration of the 1-year period beginning on Sept. 16, 2011, and applicable to any patent issued before, on, or after that effective date, with provisions for graduated implementation, see section 6(c)(2) of Pub. L. 112–29, set out as a note under section 311 of this title.
Pub. L. 112–29, §6(c)(3)(B), (C), Sept. 16, 2011, 125 Stat. 305, provided that:
“(B) Application.—The amendments made by this paragraph [amending this section and section 313 of this title]—
“(i) shall take effect on the date of the enactment of this Act [Sept. 16, 2011]; and
“(ii) shall apply to requests for inter partes reexamination that are filed on or after such date of enactment, but before the effective date set forth in paragraph (2)(A) of this subsection [set out as a note under section 311 of this title].
“(C) Continued applicability of prior provisions.—The provisions of chapter 31 of title 35, United States Code, as amended by this paragraph [amending this section and section 313 of this title], shall continue to apply to requests for inter partes reexamination that are filed before the effective date set forth in paragraph (2)(A) as if subsection (a) [enacting section 319 of this title and amending this section and sections 312 to 318 of this title] had not been enacted.”
Effective Date of 2002 Amendment
Amendment by section 13105(a) of Pub. L. 107–273 applicable with respect to any determination of the Director of the United States Patent and Trademark Office that is made on or after Nov. 2, 2002, see section 13105(b) of Pub. L. 107–273, set out as a note under section 303 of this title.