13 Del. C. § 8-622: Binding effect of determination of parentage [Effective Dec. 6, 2026].

(a) Except as otherwise provided in subsection (b) of this section:

(1) A signatory to an acknowledgment of parentage or denial of parentage is bound by the acknowledgment and denial as provided in subchapter III of this chapter; and

(2) A party to an adjudication of parentage by a court acting under circumstances that satisfy the jurisdiction requirements of § 6-201 of this title and any individual who received notice of the proceeding are bound by the adjudication.

(b) A child is not bound by a determination of parentage under this chapter unless:

(1) The determination was based on an unrescinded acknowledgment of parentage and the acknowledgment is consistent with the results of genetic testing;

(2) The determination was based on a finding consistent with the results of genetic testing, and the consistency is declared in the determination or otherwise shown;

(3) The determination of parentage was made under subchapter VII or VIII of this chapter; or

(4) The child was a party or was represented by a guardian ad litem in the proceeding.

(c) In a proceeding for divorce, dissolution, annulment, or declaration of invalidity, the court is deemed to have made an adjudication of parentage of a child if the court acts under circumstances that satisfy the jurisdiction requirements of § 6-201 of this title and the final order:

(1) Expressly identifies the child as a “child of the marriage” or “issue of the marriage” or includes similar words indicating that both spouses are parents of the child; or

(2) Provides for support of the child by a spouse unless that spouse’s parentage is disclaimed specifically in the order.

(d) Except as otherwise provided in subsection (b) of this section or § 8-611 of this title, a determination of parentage may be asserted as a defense in a subsequent proceeding seeking to adjudicate parentage of an individual who was not a party to the earlier proceeding.

(e) A party to an adjudication of parentage may challenge the adjudication only under law of this State other than this chapter relating to appeal, vacation of judgment, or other judicial review.