(a) Any person claiming to be the alleged genetic parent of a child born to an unmarried birth parent and for whom parentage of the nonbirth parent has not yet been established shall file a claim for parentage with the Probate Court for the district in which either the birth parent or the child resides, on forms provided by such court. The claim may be filed at any time during the life of the child, whether before, on or after the date the child reaches the age of eighteen, or after the death of the child, but not later than sixty days after the date of notice under § 45a-716. The claim shall contain the claimant’s name and address, the name and last-known address of the birth parent and the month and year of the birth or expected birth of the child. Not later than five days after the filing of a claim for parentage, the court shall cause a certified copy of such claim to be served upon the birth parent of such child by personal service or service at the birth parent’s usual place of abode, and to the Attorney General by first class mail. The Attorney General may file an appearance and shall be and remain a party to the action if the child is receiving or has received aid or care from the state, or if the child is receiving child support enforcement services, as defined in subdivision (2) of subsection (b) of § 46b-231. The claim for parentage shall be admissible in any action for parentage under § 46b-560, and shall estop the claimant from denying parentage of such child and shall contain language that such person acknowledges liability for contribution to the support and education of the child after the child’s birth and for contribution to the pregnancy-related medical expenses of the birth parent.

(b) If a claim for parentage is filed by the alleged genetic parent of any minor child born to an unmarried birth parent, the Probate Court shall schedule a hearing on such claim, send notice of the hearing to all parties involved and proceed accordingly.

(c) The child shall be made a party to the action. If the child is a minor at the time of the proceedings, the minor child shall be represented by a guardian ad litem appointed by the court in accordance with § 45a-708. Payment for the guardian ad litem shall be made in accordance with such section from funds appropriated to the Judicial Department, except that, if funds have not been included in the budget of the Judicial Department for such purposes, such payment shall be made from the Probate Court Administration Fund.

(d) In the event that the birth parent or the alleged genetic parent is a minor, the court shall appoint a guardian ad litem to represent him or her in accordance with the provisions of § 45a-708. Payment shall be made in accordance with said section from funds appropriated to the Judicial Department, except that, if funds have not been included in the budget of the Judicial Department for such purposes, such payment shall be made from the Probate Court Administration Fund.

(e) By filing a claim under this section, the alleged genetic parent submits to the jurisdiction of the Probate Court.

(f) Once parental rights of the alleged genetic parent have been adjudicated in such parent’s favor under subsection (b) of this section, or acknowledged as provided for under sections 46b-476 to 46b-487, inclusive, such parent’s rights and responsibilities shall be equivalent to those of the birth parent, including those rights defined under § 45a-606. Thereafter, disputes involving custody, visitation or support shall be transferred to the Superior Court under chapter 815j, except that the Probate Court may enter a temporary order for custody, visitation or support until an order is entered by the Superior Court.

(g) Failing perfection of parental rights as prescribed by this section, any person claiming to be the alleged genetic parent of a child born to an unmarried birth parent (1) who has not been adjudicated the parent of such child by a court of competent jurisdiction, or (2) who has not acknowledged in writing that such person is the parent of such child, or (3) who has not contributed regularly to the support of such child, or (4) whose name does not appear on the birth certificate, shall cease to be a legal party in interest in any proceeding concerning the custody or welfare of the child, including, but not limited to, guardianship and adoption, unless such person has shown a reasonable degree of interest, concern or responsibility for the child’s welfare.

(h) Notwithstanding the provisions of this section, after the death of the alleged genetic parent of a child born to an unmarried birth parent, a party deemed by the court to have a sufficient interest may file a claim for parentage on behalf of such alleged genetic parent with the Probate Court for the district in which either the alleged genetic parent resided or the party filing the claim resides. If a claim for parentage is filed pursuant to this subsection, the Probate Court shall schedule a hearing on such claim, send notice of the hearing to all parties involved and proceed accordingly.