Section 8-609 - Limitation: Child having acknowledged or adjudicated father(a) 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 §§ 8-307 or 8-308 of this title.(b) If a child has an acknowledged father or an adjudicated father, an individual who is neither a signatory to the acknowledgment of paternity nor a party to the adjudication and who seeks an adjudication of paternity of the child must commence a proceeding not later than 2 years after the effective date of the acknowledgment or adjudication.(c) A proceeding under this section is subject to the application of the principles of estoppel established in § 8-608 of this title.74 Del. Laws, c. 136, § 1; 70 Del. Laws, c. 186, § 1.;