Oregon Revised Statutes Chapter 109 § 109.125 — Who

Who may initiate proceedings; petition; timing; parties. (1)(a) Except as provided in paragraphs (b) to (d) of this subsection, any of the following may initiate judicial proceedings under ORS 109.124 to 109.171 to adjudicate the parentage of a child: (A) The parent who gave or will give birth to the child, unless a court has adjudicated that person’s nonparentage of the child; (B) The duly appointed and acting guardian of the child, conservator of the child’s estate or a guardian ad litem, if the guardian or conservator has the physical custody of the child or is providing support for the child; (C) The administrator, as defined in ORS 25.010; (D) The child’s alleged genetic parent; (E) The child; (F) The child’s presumed parent or acknowledged parent; or (G) The child’s intended parent if the child was conceived by assisted reproduction, other than under a gestational surrogacy agreement. (b) If the parent who gave or will give birth to the child is married to and cohabiting with the child’s presumed parent or acknowledged parent under ORS 109.070 (1)(a)(B), the proceeding may be initiated only: (A) By the parent who gave or will give birth to the child or the child’s presumed parent or acknowledged parent; or (B) With the consent of both the parent who gave or will give birth to the child and the child’s presumed parent or acknowledged parent. (c) If the proceeding is commenced to challenge an acknowledgment of parentage, the proceeding may be initiated only by those persons with standing under ORS