Cincinnati Insurance Company v. Eastern Atlantic Insurance Company and Integrity Underwriters, Inc.

POSNER, Circuit Judge.

The plaintiff in this diversity suit (governed, all agree, by Illinois law) is an insurance company that we’ll call “Cincinnati.” The complaint seeks a declaration that Cincinnati has no duty to defend the two defendants, “Eastern” and “Integrity,” under the basic liability policy that it had issued to them and under an umbrella liability policy that it had issued to Integrity alone. Eastern is another insurance company, while Integrity is an insurance agency that produces business for Eastern. The district court granted judgment on the pleadings for the defendants,…