43 USC 1166: Limitations of suits to annul patents
Text contains those laws in effect on January 15, 2013
From Title 43-PUBLIC LANDSCHAPTER 28-MISCELLANEOUS PROVISIONS RELATING TO PUBLIC LANDSSUBCHAPTER II-DISPOSITION OF SUSPENDED ENTRIES AND CLAIMS; INVALID AND DEFECTIVE CLAIMS AND PATENTS THEREFOR
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§1166. Limitations of suits to annul patents
Suits by the United States to vacate and annul any patent shall only be brought within six years after the date of the issuance of such patents.
(Mar. 3, 1891, ch. 559,