2011 ORS § 109.103¹
Proceeding to determine custody or support of child
(1) If a child is born to an unmarried woman and paternity has been established under ORS 109.070 (Establishing paternity), or if a child is born to a married woman by a man other than her husband and the mans paternity has been established under ORS 109.070 (Establishing paternity), either parent may initiate a civil proceeding to determine the custody or support of, or parenting time with, the child. The proceeding shall be brought in the circuit court of the county in which the child resides or is found or in the circuit court of the county in which either parent resides. The parents have the same rights and responsibilities regarding the custody and support of, and parenting time with, their child that married or divorced parents would have, and the provisions of ORS 107.093 (Restraining order) to 107.449 (Transfer of proceeding under ORS 107.135 to auxiliary circuit court) that relate to custody, support and parenting time, and the provisions of ORS 107.755 (Court-ordered mediation) to 107.795 (Availability of other remedies) that relate to mediation procedures, apply to the proceeding.
(2) A parent may initiate the proceeding by filing with the court a petition setting forth the facts and circumstances upon which the parent relies. The parent shall state in the petition, to the extent known:
(a) Whether there is pending in this state or any other jurisdiction any type of support proceeding involving the child, including one brought under ORS 109.100 (Petition for support), 109.165 (Vacation or modification of judgment), 125.025 (Authority of the court in protective proceedings), 416.400 (Definitions for ORS 416.400 to 416.465) to 416.465 (Relief from compliance with order), 419B.400 (Authority to order support) or 419C.590 (Authority of court to order support) or ORS chapter 110; and
(b) Whether there exists in this state or any other jurisdiction a support order, as defined in ORS 110.303 (Definitions), involving the child.
(3) The parent shall include with the petition a certificate regarding any pending support proceeding and any existing support order. The parent shall use a certificate that is in a form established by court rule and include information required by court rule and subsection (2) of this section.
(4) When a parent initiates a proceeding under this section and the child support rights of one of the parents or of the child have been assigned to the state, the parent initiating the proceeding shall serve, by mail or personal delivery, a copy of the petition on the Administrator of the Division of Child Support or on the branch office providing support services to the county in which the suit is filed. [1975 c.640 §9; 2003 c.116 §9; 2003 c.572 §15; 2007 c.454 §2; 2011 c.114 §4]