Thomas A. Marrinson Photo
Tom's practice includes coverage litigation, complex commercial litigation and insurance-related counseling.  His coverage litigation experience spans a broad array of insurance disputes, including those involving first-party property and business interruption, D&O, professional liability, asbestos and other mass tort claims, environmental clean-up, and lead paint exposure.  He also frequently counsels Fortune 500 companies on many types of insurance-related matters.  Tom's insurance coverage practice is nationwide and has involved litigation in jurisdictions throughout the United States. 


  • University of California, Los Angeles, School of Law, 1989, J.D.
  • Columbia University, 1986, A.B.

  • Illinois
  • California

  • Board Member, Co-Chair, Governance Committee, Legal Aid Chicago  
  • Governing Member, Brookfield Zoo
  • Fellow, American Bar Foundation

Awards & Recognition

  • Selected to the Illinois Super Lawyers list for Insurance Coverage, 2007-2022
  • Selected through peer review for inclusion in The Best Lawyers in America© for Insurance Law, 2006-2024
  • Selected as one of "40 Illinois Attorneys Under 40 to Watch," by Chicago Daily Law Bulletin in 2002
  • Ranked in Chambers USA for Illinois Insurance: Dispute Resolution, 2007-2024