Oregon Revised Statutes Corporations and Partnerships § 65.727

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

(2) Upon receipt of the signed statement in proper form, 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 Office of the Secretary of State unless the foreign corporation sooner appoints a successor registered agent as provided in ORS 65.724, thereby terminating the capacity of the prior agent.