Or. Rev. Stat. § 30.915 (2026)

      30.915 Defenses. It shall be a defense to a product liability civil action that an alteration or modification of a product occurred under the following circumstances:

      (1) The alteration or modification was made without the consent of or was made not in accordance with the instructions or specifications of the manufacturer, distributor, seller or lessor;

      (2) The alteration or modification was a substantial contributing factor to the personal injury, death or property damage; and

      (3) If the alteration or modification was reasonably foreseeable, the manufacturer, distributor, seller or lessor gave adequate warning. [1977 c.843 §4]