Oregon Revised Statutes Property Rights and Transactions § 105.005

(1) Any person who has a legal estate in real property and a present right to the possession of the property, may recover possession of the property, with damages for withholding possession, by an action at law. The action shall be commenced against the person in the actual possession of the property at the time, or if the property is not in the actual possession of anyone, then against the person acting as the owner of the property.

(2) In an action brought under subsection (1) of this section or in a separate action for damages only, a person who, throughout the vesting period, used or occupied land of another with the honest and objectively reasonable belief that the person was the actual legal owner of the land shall not be liable for: