Oregon law mandates a broad duty to defend, requiring insurers to provide legal representation to their policyholders whenever there is a potential for coverage under the policy. The significance of this broad interpretation means that an insurer has a duty to defend an insured even in situations where the alleged facts only imply a covered claim, and even in situations where the underlying claim is ultimately not covered by the policy. The insurer’s duty to defend is triggered if the allegations of the complaint, reasonably interpreted, could result in the insured being held liable for damages covered by the policy. This is referred to as the “four-corners” rule; it is also sometimes referred to as the eight-corners rule (for the four corners of the complaint plus the four corners of the policy). Oregon’s adoption of a broad interpretation of the duty to defend affirmatively places the onus on insurers to err on the side of coverage.

This broad duty to defend is based on the principle that an insured should not have to bear the expense of defending a lawsuit that the insurer may ultimately have to pay for. The duty to defend is also important because it helps ensure that insureds have access to legal representation when faced with a lawsuit.