ORS 15.330: Capacity to contract.

(1) A party has the capacity to enter into a contract if the party has that capacity under the law of the state in which the party resides or the law applicable to this issue under ORS 15.320, 15.360 or 15.380.

      (2) A party that lacks capacity to enter into a contract under the law of the state in which the party resides may assert that incapacity against a party that knew or should have known of the incapacity at the time the parties entered into the contract. If a party establishes lack of capacity in the manner provided by this subsection, the consequences of the party’s incapacity are governed by the law of the state in which the incapable party resides.