Oregon Revised Statutes Procedure in Civil Proceedings § 18.205

(1) A judgment creditor may assign all or part of the creditor's rights under a judgment. An assignment of judgment document must be signed by the judgment creditor, by the judgment creditor's agent or by an attorney who represents the judgment creditor. Signature by the judgment creditor's agent is not subject to the requirement of ORS 9.320 that a party that is not a natural person appear by an attorney in all cases. The signature must be acknowledged by a notary public. The document may be:

(2) Upon filing or recording under this section, an assignment of judgment document operates to assign the judgment creditor's rights under the judgment to the extent reflected in the document.

(3) If this or another state is assigned or subrogated to the support rights of a person under ORS 412.024, 418.032, 419B.406 or 419C.597 or similar statutes of another state, an assignment of judgment document bearing the signature of the Administrator of the Division of Child Support of the Department of Justice or the authorized representative of the administrator may be filed or recorded in the same manner as an assignment of judgment document under subsection (1) of this section and shall have the same effect as an assignment of judgment document signed by the judgment creditor.

(4) This section does not apply to justice courts, municipal courts or county courts performing judicial functions.