13 Del. C. § 8-303: Denial of paternity [Effective until Dec. 6, 2026].

A presumed father may sign a denial of paternity. The denial is valid only if:

(1) An acknowledgment of paternity signed, or otherwise authenticated, by another man is filed pursuant to § 8-305 of this title;

(2) The denial is in a record, and is signed, or otherwise authenticated, under penalty of perjury; and

(3) The presumed father has not previously:

(i) Acknowledged paternity, unless the previous acknowledgment has been rescinded pursuant to § 8-307 of this title or successfully challenged pursuant to § 8-308 of this title; or

(ii) Been adjudicated to be the father of the child.