1.    If a child has an acknowledged father, a signatory to the acknowledgment of paternity or denial of paternity may commence a proceeding seeking to rescind the acknowledgment or denial or challenge the paternity of the child only within the time allowed under section 14-20-17 or 14-20-18.

2.    If a child has an acknowledged father or an adjudicated father, an individual, other than the child, who is neither a signatory to the acknowledgment of a paternity nor a party to the adjudication and who seeks an adjudication of paternity of the child must commence a proceeding not later than two years after the effective date of the acknowledgment or adjudication.

3.    A proceeding under this section is subject to the application of the principles of estoppel established in section 14-20-43.