35 U.S. Code § 307 - Certificate of patentability, unpatentability, and claim cancellation
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(a) In a reexamination proceeding under this chapter, when the time for appeal has expired or any appeal proceeding has terminated, the Director will issue and publish a certificate canceling any claim of the patent finally determined to be unpatentable, confirming any claim of the patent determined to be patentable, and incorporating in the patent any proposed amended or new claim determined to be patentable.
(b) Any proposed amended or new claim determined to be patentable and incorporated into a patent following a reexamination proceeding will have the same effect as that specified in section 252 for reissued patents on the right of any person who made, purchased, or used within the United States, or imported into the United States, anything patented by such proposed amended or new claim, or who made substantial preparation for the same, prior to issuance of a certificate under the provisions of subsection (a) of this section.
Source(Added Pub. L. 96–517, § 1,Dec. 12, 1980, 94 Stat. 3016; amended Pub. L. 103–465, title V, § 533(b)(8),Dec. 8, 1994, 108 Stat. 4990; Pub. L. 106–113, div. B, § 1000(a)(9) [title IV, § 4732(a)(10)(A)], Nov. 29, 1999, 113 Stat. 1536, 1501A–582; Pub. L. 107–273, div. C, title III, § 13206(b)(1)(B),Nov. 2, 2002, 116 Stat. 1906; Pub. L. 112–29, § 20(j),Sept. 16, 2011, 125 Stat. 335.)
2011—Subsec. (b). Pub. L. 112–29struck out “of this title” after “252”.
2002—Subsec. (a). Pub. L. 107–273made technical correction to directory language of Pub. L. 106–113. See 1999 Amendment note below.
1999—Subsec. (a). Pub. L. 106–113, as amended by Pub. L. 107–273, substituted “Director” for “Commissioner”.
1994—Subsec. (b). Pub. L. 103–465substituted “used within the United States, or imported into the United States, anything” for “used anything”.
Effective Date of 2011 Amendment
Amendment by Pub. L. 112–29effective upon the expiration of the 1-year period beginning on Sept. 16, 2011, and applicable to proceedings commenced on or after that effective date, see section 20(l) ofPub. L. 112–29, set out as a note under section 2 of this title.
Effective Date of 1999 Amendment
Amendment by Pub. L. 106–113effective 4 months after Nov. 29, 1999, see section 1000(a)(9) [title IV, § 4731] of Pub. L. 106–113, set out as a note under section 1 of this title.
Effective Date of 1994 Amendment
Amendment by Pub. L. 103–465effective on date that is one year after date on which the WTO Agreement enters into force with respect to the United States [Jan. 1, 1995], with provisions relating to earliest filed patent application, see section 534(a), (b)(3) ofPub. L. 103–465, set out as a note under section 154 of this title.