
With a consistent record of advising and representing clients in complex insurance matters, McDermott Will & Emery LLP demonstrates strength in handling diverse insurance and reinsurance disputes. These include cases related to bankruptcy appellate, insurance coverage, and inter-insurer contributions across various sectors such as sexual abuse claims, clergy abuse cases, precision manufacturing, and professional sports leagues. The practice, with the ability to handle both trial and appeal proceedings, securing first-chair trial and appellate victories for top names in the insurance sector, provides comprehensive expertise to industry stakeholders, emphasizing notable strength in healthcare sector. Serving as trusted advisors to significant clients like Allianz, Enstart, Marsh, and Nationwide, practice head Margaret Warner, based in Washington, brings deep experience to the table. Working alongside her in Washington, Ryan Smethurst, a litigation specialist, supports the practice across a broad spectrum of insurance litigation, from regulatory issues to high-profile class actions and ERISA disputes.
Legal 500 Editorial commentary
Accolades
Client satisfaction
Key clients
- Allianz Global Risks US Insurance Company
- Allianz Underwriters Ins. Co.
- The American Insurance Company
- National Basketball Association
- World Trade Center Captive Insurance Company, Inc.
- Fireman’s Fund Insurance Company
- State National Insurance Company
- Topa Insurance Group
- MCIC, A Vermont Risk Retention Group
Lawyers
Hall of fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.

Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Practice head
Margaret Warner
Other key lawyers
Ryan Smethurst