The Superior Court of Delaware, applying Delaware law, has held that professional liability insurers had a duty to defend their insured against copyright infringement claims, finding that a “Deliberate Acts” exclusion did not apply and that the insured’s late notice barred coverage for some, but not all, of the underlying claims. Frontier Commc’ns Holdings, Inc. v. Indian Harbor Ins. Co., 2025 WL 2530543 (Del. Super. Ct. Aug. 14, 2025).