N.M. Stat. Ann. § 40-11A-308
A. After the period for rescission pursuant to Section 3-307 of the New Mexico Uniform Parentage Act has expired, a signatory to an acknowledgment of paternity or denial of paternity may commence a proceeding to challenge the acknowledgment or denial only:
(2) within two years after the acknowledgment or denial is filed with the bureau or two years after the eighteenth birthday of the signatory, whichever is later.
B. A party challenging an acknowledgment of paternity or denial of paternity has the burden of proof.
History: Laws 2009, ch. 215, § 3-308.
Effective dates. — Laws 2009, ch. 215, § 20 made the New Mexico Uniform Parentage Act effective January 1, 2010.