Hate ads? Verify for LSD+ → Learn More

Case Citation
Legal Case Name

Keene Corporation v. Insurance Company of North America Aetna Casualty and Surety Company, Keene Corporation v. Insurance Company of North America Keene Corporation v. Insurance Company of North America, Liberty Mutual Insurance Company,appellant. Keene Corporation v. Insurance Company of North America, Aetna Casualty and Suretycompany Case Brief

Court of Appeals for the D.C. Circuit1981Docket #849858
667 F.2d 1034

Why Top Law Students (And Those Aspiring to Be) Use LSD+ Briefs

Let's be real, law school is a marathon. Our exclusive Flash-to-Full case system is designed by Harvard Law School and MIT grads to match your pace: Quick summaries when you're slammed, detailed analysis when you need to go deep. Only LSD+ offers this kind of flexibility to genuinely fit your study flow.

Adaptive Case Views

Toggle between Flash, Standard, and Expanded. Get what you need, when you need it.

Exam-Ready IRAC Format

We deliver the precise structure professors look for in exam answers.

Complex Cases, Clarified

We break down dense legal reasoning into something digestible, helping you grasp core concepts.

Case Brief Summary & Legal Analysis

General Brief
4 min read

tl;dr: Keene Corp. sought declaration of CGL insurers’ duties for asbestos claims. Court adopted a “continuous trigger” theory: exposure, disease progression, and manifestation all trigger coverage. Each triggered policy is fully liable.

Legal Significance: Established the influential “continuous trigger” (or “triple trigger”) theory for insurance coverage in long-latency disease cases, making each insurer on risk during any part of the injury process fully liable.

Keene Corporation v. Insurance Company of North America Aetna Casualty and Surety Company, Keene Corporation v. Insurance Company of North America Keene Corporation v. Insurance Company of North America, Liberty Mutual Insurance Company,appellant. Keene Corporation v. Insurance Company of North America, Aetna Casualty and Suretycompany Law School Study Guide

Use this case brief structure for your own legal analysis. Focus on the IRAC methodology to excel in law school exams and cold calls.

Case Facts & Court Holding

Key Facts & Case Background

Keene Corporation, a manufacturer of asbestos-containing thermal insulation products between 1948 and 1972, was named as a defendant in over 6,000 lawsuits alleging personal injury or wrongful death from asbestos-related diseases such as asbestosis, mesothelioma, and lung cancer. These diseases typically involve long latency periods between initial exposure to asbestos fibers and the manifestation of illness. Keene held comprehensive general liability (CGL) insurance policies issued by several defendants (Insurance Company of North America, Liberty Mutual, Aetna, Hartford) from 1961 to 1980. The policies provided that the insurer would pay sums Keene became legally obligated to pay as damages because of “bodily injury” caused by an “occurrence” during the policy period. “Bodily injury” was defined as “bodily injury, sickness or disease,” and “occurrence” included “injurious exposure to conditions” resulting in bodily injury during the policy period. Due to the progressive nature of asbestos diseases, where injury could occur from initial inhalation, through subclinical development (“exposure in residence”), to eventual clinical manifestation, often spanning multiple policy periods and different insurers, Keene sought a declaratory judgment to determine which policies were triggered and the extent of each insurer’s obligation to defend and indemnify. The insurers proposed differing trigger theories, primarily “exposure” (injury at inhalation) or “manifestation” (injury when disease becomes diagnosable). The district court had adopted a pro-rata allocation based on exposure.

Court Holding & Legal Precedent

Issue: How is coverage under comprehensive general liability insurance policies triggered for long-latency asbestos-related diseases, and, once triggered, what is the extent of an insurer’s liability and how is it allocated among multiple insurers on the risk during the continuous injury process?

Reversed. The court held that inhalation exposure, exposure in residence, and manifestation Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna

Master Every Case Faster

Unlock premium legal analysis that helps you quickly understand complex cases, designed by Harvard Law and MIT graduates. It's about working smarter, not just harder.

Start 14-Day Free Trial

Thousands of students are already saving time and gaining clarity. Why not you?

IRAC Legal Analysis

Premium Feature Unlock

Complete IRAC Analysis for Higher Grades

IRAC (Issue, Rule, Analysis, Conclusion) is the exact format professors want to see in your exam answers. Our exclusive Flash-to-Full briefs combine holding, analysis, and rule statements formatted to match what A+ students produce in exams. These structured briefs help reinforce the essential legal reasoning patterns expected in law school.

Legal Issue

How is coverage under comprehensive general liability insurance policies triggered for long-latency asbestos-related diseases, and, once triggered, what is the extent of an insurer’s liability and how is it allocated among multiple insurers on the risk during the continuous injury process?

Conclusion

This landmark decision established the influential "continuous trigger" or "triple trigger" theory Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut

Legal Rule

For long-latency diseases, "bodily injury" under a CGL policy is a continuous Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitatio

Legal Analysis

The court's primary objective was to give effect to the policies' dominant Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore

Flash-to-Full Case Opinions

Flash Summary

  • The court adopted a “continuous trigger” for asbestos injuries under CGL
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in repr

Master Every Case Faster

Unlock premium legal analysis that helps you quickly understand complex cases, designed by Harvard Law and MIT graduates. It's about working smarter, not just harder.

Start 14-Day Free Trial

Thousands of students are already saving time and gaining clarity. Why not you?

Hate ads? Verify for LSD+ → Learn More