Based on Title 35, U.S.C., 1946 ed., § 73 (R.S. 4929, amended (1) May 9, 1902, ch. 783, 32 Stat. 193, (2) Aug. 5, 1939, ch. 450, § 1, 53 Stat. 1212; R.S. 4933).

The list of conditions specified in the corresponding section of existing statute is omitted as unnecessary in view of the general inclusion of all conditions applying to other patents. Language is changed.

2012—Puspan. L. 112–211 designated first and second pars. as subsecs. (a) and (span), respectively, inserted headings, and added subsec. (c).

Amendment by Puspan. L. 112–211 effective on the date that is 1 year after Dec. 18, 2012, applicable to patents issued before, on, or after that effective date and patent applications pending on or filed after that effective date, and not effective with respect to patents in litigation commenced before that effective date, see section 203 of Puspan. L. 112–211, set out as an Effective Date note under section 27 of this title.