2011 ORS § 419B.914¹
Proceeding when person entitled to service is not summoned and is not before court

If the child or ward is before the court, the court has the power to proceed with the case without service upon those entitled to service under ORS 419B.812 (Issuance of summons) to 419B.839 (Required and discretionary summons) if diligent efforts have failed to reveal the identity or the whereabouts of the person, except that:

(1) No order entered pursuant to ORS 419B.500 (Termination of parental rights generally), 419B.502 (Termination upon finding of extreme conduct), 419B.504 (Termination upon finding of unfitness), 419B.506 (Termination upon finding of neglect) and 419B.508 (Termination upon finding of abandonment) may be entered unless ORS 419B.518 (Appointment of counsel for parents), 419B.521 (Conduct of termination hearing), 419B.524 (Effect of termination order) and 419B.812 (Issuance of summons) to 419B.839 (Required and discretionary summons) are complied with.

(2) No order for support as provided in ORS 419B.400 (Authority to order support), 419B.402 (Support order is judgment), 419B.404 (Support for child or ward in state financed or supported institution) and 419B.406 (Assignment of support order to state) may be entered against a person unless that person is served as provided in ORS 419B.812 (Issuance of summons) to 419B.839 (Required and discretionary summons). [Formerly 419B.285; 2003 c.396 §95]