(1) A presumed parent who is not the genetic parent of a child and who could not reasonably have known about the birth of the child may commence a proceeding under this section within two years after learning of the child's birth.

(2) An alleged genetic parent who did not know of the potential genetic parentage of a child and who could not reasonably have known on account of material misrepresentation or concealment may commence a proceeding under this section within two years after discovering the potential genetic parentage. If the person is adjudicated to be the genetic parent of the child, the court shall not disestablish a presumed parent.

(3) Regarding a presumption under subdivision 401(a)(4) of this title, another parent of the child may challenge a presumption of parentage if that parent openly held out the child as the presumptive parent's child due to duress, coercion, or threat of harm. Evidence of duress, coercion, or threat of harm may include whether within the prior ten years, the person presumed to be a parent pursuant to subdivision 401(a)(4) of this title has been convicted of domestic assault, sexual assault, or sexual exploitation of the child or another parent of the child, was subject to a final abuse protection order pursuant to 15 V.S.A. chapter 21 because the person was found to have committed abuse against the child or another parent of the child, or was substantiated for abuse against the child or another parent of the child pursuant to 33 V.S.A. chapter 49 or 33 V.S.A. chapter 69. (Added 2017, No. 162 (Adj. Sess.), § 1; amended 2019, No. 14, § 46, eff. April 30, 2019.)