Oregon Revised Statutes Insurance § 742.208

(1) Subject to subsections (2) and (3) of this section, this entire policy shall be void if, whether before or after a loss, the insured has willfully concealed or misrepresented any material fact or circumstance concerning this insurance or the subject thereof, or the interest of the insured therein, or in case of any fraud or false swearing by the insured relating thereto.

(2) All statements made by or on behalf of the insured, in the absence of fraud, shall be deemed representations and not warranties. No such statements that arise from an error in the application shall be used in defense of a claim under the policy unless:

(3) In order to use any representation by or on behalf of the insured in defense of a claim under the policy, the insurer must show that the representations are material and that the insurer relied on them.