Holding that "a duty to defend an additional insured is not contingent on there having been an adjudication of liability giving rise to a duty to indemnify the additional insured"
Concluding that, where the new arguments were available to the party below, "the circumstances . . . do not militate in favor of an exercise of discretion"
186 Ill. 2d 127 (Ill. 1999) Cited 359 times 3 Legal Analyses
Holding that the "undisputed facts compel the legal conclusion that Wausau's refusal to defend the Wyoming suit was vexatious and unreasonable as a matter of law"