Insurer's Duty to Defend Additional Insureds: Navigating Differing Court Standards to Determine When Duty is Triggered
Advocating Coverage From Perspectives of Insurers and Additional Insured Claimants
Recording of a 90-minute CLE webinar with Q&A
This CLE course will analyze how courts assess when the insurer’s duty to defend is triggered with respect to a claim by an additional insured. The panel will outline the various circumstances in which resort to extrinsic evidence may be necessary.
Outline
- Overview of standards used by courts to determine an insurer’s duty to defend
- Four corners/eight corners rules
- Extrinsic evidence
- Determining whether the policy grants the party additional insured status
- Determining whether there are limitations to this AI status
- Determining whether there are limitations to the scope of coverage
Benefits
The panel will review these and other key issues:
- Standards used by courts to determine an insurer’s duty to defend an additional insured claimant
- Circumstances in which extrinsic evidence is necessary for courts to determine whether the insured’s duty to defend an additional insured is triggered
- Circumstances in which additional insured endorsements may limit or negate coverage of the AI claimant
Faculty

Daniel A. Johnson, Esq.
Jenner & Block
Mr. Johnson is experienced in representing policyholders in insurance coverage matters and has also worked on various... | Read More
Mr. Johnson is experienced in representing policyholders in insurance coverage matters and has also worked on various other types of commercial litigation cases, including reinsurance, warranty and bond indenture matters. A member of the firm’s Litigation Department, Mr. Johnson has been involved in matters related to insurance for losses arising from mortgage lending practices, D&O liability, CGL, property damage, and business interruption.
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Max H. Stern
Partner
Duane Morris
Mr. Stern is the head of the firm’s Insurance Litigation Division. As a trial and appellate lawyer, he has... | Read More
Mr. Stern is the head of the firm’s Insurance Litigation Division. As a trial and appellate lawyer, he has extensive experience with respect to coverage, bad faith, reinsurance and regulatory disputes, spanning multiple lines, including specialty, professional, excess and general liability. His work representing insurers has earned him a spot on numerous leading lawyers lists, including Chambers USA (both the Nationwide and California lists), Legal500, and Martindale-Hubbell.
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