Guaranty Bank v. Chubb Corp.

POSNER, Circuit Judge.

The plaintiff in this diversity suit governed by Wisconsin law, Guaranty Bank, appeals from the grant of summary judgment in favor of the defendant, Great Northern Insurance Company. (The plaintiff is no longer seeking relief against the other two defendants, affiliates of Great Northern, and we shall ignore them.) Great Northern had issued a liability insurance policy to Guaranty Bank that covered “advertising injury,” but refused to defend the bank against a suit by Midwest Guaranty Bank, and that refusal, the bank argues, was a breach of the duty to defend created by…