In this final post in the Blog’s Landmark Montana Supreme Court Decision Series, we discuss the court’s ruling on the known loss doctrine and its interpretation of “occurrence” in National Indemnity Co. v. State, 499 P.3d 516 (Mont. 2021).
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Asbestos

Landmark Montana Supreme Court Decision Series: The Duty to Defend
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).
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Landmark Montana Supreme Court Decision Series: Pollution Exclusion
In this post in the Blog’s Landmark Montana Supreme Court Decision Series, we discuss the court’s ruling on the pollution exclusion in National Indemnity Co. v. State, 499 P.3d 516 (Mont. 2021).
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Landmark Montana Supreme Court Decision Series: Trigger and Allocation
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”).
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Hunton Insurance Partners Ahmad and Levine Comment to Law360 on 2019’s Top Insurance Rulings
Hunton Insurance partners Syed Ahmad and Michael Levine were interviewed by Law360 for its year-end article discussing the top insurance rulings in 2019, for their insights on two of the year’s biggest insurance decisions.
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New York Appellate Court Affirms 1966 Insurance Policy Continues to Cover WTC Asbestos Claims
In a prior post, we discussed a New York trial-court decision that found an insurance policy issued in 1966, to insure the construction of the World Trade Center, continues to cover modern-day asbestos claims, with each claim constituting an individual occurrence. Last week, in American Home Assurance Co. v. The Port Authority of N.Y. and N.J., 7628-7628A (1st Dep’t Nov. 15, 2018), an intermediate appellate court affirmed that decision, agreeing that coverage is triggered for claims tied to alleged asbestos exposure at the WTC site in the 1960s and ’70s.
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Georgia Court of Appeals Holds That Policyholder Can “Stack” the Limits of Each Primary Policy After Asbestos Claim
A Georgia Court of Appeals judge recently ruled that Scapa Dryer Fabrics was entitled to $17.4 million worth of primary coverage from National Union Fire Insurance Company of Pittsburgh, PA for claims of injurious exposure to Scapa’s asbestos-containing dryer felts. Nat’l Union Fire Ins. Co. of Pittsburgh, PA v. Scapa Dryer Fabrics, Inc., No. A18A1173, 2018 WL 5306693, at *1 (Ga. Ct. App. Oct. 26, 2018). Scapa sought coverage under five National Union policies issued from 1983–1987. The 1983, 1984 and 1985 National Union policies had limits of $1 million per occurrence and $1 million in the aggregate. The liability limits for the 1986 and 1987 renewal policies were amended by endorsement to $7.2 million. Scapa sought to recover the full $17.4 million from all five policies. National Union argued that a “Non-Cumulative Limits of Liability Endorsement” in the 1986 and 1987 policies limited Scapa’s recovery to only $7.2 million. Scapa sued National Union and its sister company, New Hampshire Insurance Company (from which Scapa purchased excess liability coverage), in Georgia state court.
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New York Court Finds 51-Year-Old AIG Policy Still Covers World Trade Center Asbestos Injury Claims
A New York trial court held last week in American Home Assurance Co. v. The Port Authority of N.Y. and N.J., Index No. 651096/2012 (Sup. Ct. N.Y. Nov. 29, 2017) (Bransten, J.) that an insurance policy issued in 1966, to insure the construction of the World Trade Center, continues to provide insurance coverage over modern-day asbestos claims, with each claim constituting an individual occurrence.
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Another State Appellate Court Adopts “All-Sums” Approach And Vertical Exhaustion For Long-Tail Disputes
A Missouri appellate panel recently upheld a lower court’s ruling in favor of the insured that an “all-sums” allocation would apply to determining exhaustion of the insured’s liability insurance coverage and, in so holding, rejected the pro-rata, proportional allocation sought by the insurers. The appellate panel further held that coverage could be exhausted vertically.
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Delaware Supreme Court Rules In Long-Running Viking Pump Dispute
The Delaware Supreme Court ruled on Monday in a long-running dispute involving Viking Pump’s and Warren Pumps’ claims for recovery under primary, umbrella, and excess insurance. The Delaware high court had certified two questions to the New York Court of Appeals. The Delaware decision follows the New York high court’s ruling in May that the policies required “all sums” allocation and “vertical” exhaustion” (click here and here for prior posts).
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