Oregon Revised Statutes Water Resources: Irrigation, Drainage, Flood Control, Reclamation § 554.086

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

(2) Upon delivery of the signed statement, the Secretary of State shall file the resignation statement. The copy of the statement given to the corporation under subsection (1) of this section shall be addressed to the corporation at the corporation's mailing address or the corporation's principal office as shown by the records of the Office of the Secretary of State. For purposes of this subsection, written notice is effective at the earliest of the following:

(3) The agency appointment is terminated and the registered office discontinued, if so provided, on the 31st day after the date on which the statement was filed by the Secretary of State, unless the corporation shall sooner appoint a successor registered agent as provided in ORS 554.082, thereby terminating the capacity of such agent.