
From the U.S. Code Online via GPO Access
[wais.access.gpo.gov]
[Laws in effect as of January 23, 2000]
[Document not affected by Public Laws enacted between
  January 23, 2000 and December 4, 2001]
[CITE: 43USC1166]

 
                         TITLE 43--PUBLIC LANDS
 
      CHAPTER 28--MISCELLANEOUS PROVISIONS RELATING TO PUBLIC LANDS
 
SUBCHAPTER II--DISPOSITION OF SUSPENDED ENTRIES AND CLAIMS; INVALID AND 
                  DEFECTIVE CLAIMS AND PATENTS THEREFOR
 
Sec. 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, 26 Stat. 1093; Mar. 3, 1891, ch. 561, Sec. 8, 26 
Stat. 1099.)
