ORS 109.154: Temporary child support pending determination of parentage.

(1) Notwithstanding the objections of a party to an order that seeks to establish parentage, parentage of a child may be presumed for the purpose of establishing temporary child support if the person whose parentage is being established is:

      (a) A presumed parent;

      (b) Petitioning to be adjudicated a parent;

      (c) Identified as a genetic parent under ORS 109.191;

      (d) An alleged genetic parent who has declined to submit to genetic testing;

      (e) Shown by clear and convincing evidence to be a parent of the child; or

      (f) An intended parent of the child and the child was conceived by assisted reproduction, including under a surrogacy agreement.

      (2) Upon the motion of a party, the court shall enter a temporary order requiring the person whose parentage is being established to provide support pending the determination of parentage by the court.

      (3) In determining the amount of support, the court shall use the formula established under ORS 25.275.