Okla. Stat. tit. 10, § 7700-308
A. After the period for rescission under Section 15 of this act has expired, a signatory of an acknowledgment of paternity or denial of paternity may commence a proceeding to challenge the acknowledgment or denial only:
Laws 2006, HB 2967, c. 116, § 16, eff. November 1, 2006.