After the sixty-day period referred to in subparagraph a of this paragraph, a duly executed acknowledgment of paternity may be challenged in court only in accordance with the Uniform Parentage Act. The legal responsibilities, including but not limited to child support obligations, of any signatory arising from the acknowledgment may not be suspended during the challenge, except for good cause shown.
This paragraph shall not be interpreted to authorize the rescission of an acknowledgement of paternity if such rescission would be prohibited under applicable federal law.
Okla. Stat. tit. 56, § 238.6B