Oregon Revised Statutes Corporations and Partnerships § 60.727

(1) The registered agent of a foreign corporation may resign as agent upon delivering a signed statement to the office and giving notice in the form of a copy of the statement to the foreign corporation. The statement of resignation may include a statement that the registered office is also discontinued.

(2) Upon the delivery of the signed statement, the Secretary of State shall file the resignation statement. The copy of the statement given to the foreign corporation under subsection (1) of this section shall be addressed to the foreign corporation at the foreign corporation's mailing address or the foreign corporation's principal office as shown on the records of the office of the Secretary of State.

(3) The agency appointment is terminated and the registered office discontinued if so provided in the signed statement under subsection (1) of this section on the 31st day after the date on which the statement was filed by the Secretary of State unless the foreign corporation has previously appointed a successor registered agent, as provided in ORS 60.724 thereby terminating the capacity of such agent.