This post in our Landmark Montana Supreme Court Decision Series discusses the Montana Supreme Court’s consideration of an insurer’s duty to defend in National Indemnity Co. v. State, 499 P.3d 516 (Mont. 2021).
Continue Reading Landmark Montana Supreme Court Decision Series: The Duty to Defend

In one of the top insurance-coverage decisions of 2021, the Montana Supreme Court at the end of the year handed down a landmark decision adopting the continuous trigger of coverage and “all sums” allocation, finding a duty to defend and ruling that the qualified, or “sudden and accidental” pollution exclusion did not apply. Nat’l Indem. Co. v. State, 499 P.3d 516 (Mont. 2021). The Supreme Court affirmed in part and reserved in part the rulings entered by the trial court, largely upholding a $98,000,000 judgment for the State against its CGL insurer for the policy years 1973 to 1975. The ruling thus helps ensure coverage for the hundreds of claims alleging that the State had failed to warn claimants of the dangers of asbestos exposures to workers in vermiculite mining and milling operations in Libby, Montana, operated by W. R. Grace (the “Libby Mine”).
Continue Reading Landmark Montana Supreme Court Decision Series: Trigger and Allocation