Margaret Fitzsimmons


  • location icon Chicago, IL
    550 West Adams Street
    Chicago, IL 60661

Margaret "Maggie" Fitzsimmons is a partner in the Chicago office of Lewis Brisbois and a member of the General Liability Practice. Her practice concentrates in civil and commercial litigation, including medical malpractice, professional liability, product liability, class action and mass tort litigation, employment law, and labor law. Ms. Fitzsimmons has represented clients in all stages of litigation, including jury trials in federal and state court.


  • "Prudential Mootness: Promised Out-of-Court Relief May Defeat Class Actions," International Association of Defense Counsel, February 12, 2013
  • "Defamation Claims Against Experts," The Critical Path, September 2007
  • "Potential Benefits and Risks of Offshore Outsourcing," The Critical Path, September 2007

Representative Cases

Maggie has second-chaired a significant number of cases before juries resulting in favorable outcomes, and her representation has addressed a broad range of issues. Her practice has included the successful defense of professionals and entities, including the representation of:

  • An emergency-room physician who allegedly failed to diagnose an atypical aortic dissection
  • A design professional accused of defective design of a major roadway
  • Defense of a man accused by his former wife of sexual assault and misconduct relating to their marriage


Illinois Supreme Court

U.S. District Court for the Northern District of Illinois

U.S. District Court for the Northern District of Indiana

Trial Bar of the U.S. District Court for the Northern District of Illinois


  • Chicago Bar Association
  • Illinois State Bar Association
  • American Bar Association
  • Defense Research Institute


Loyola University Chicago School of Law

Juris Doctor, cum laude

  • Deans List, Senior Editor of Annals of Health Law Journal
  • CALI Award for Excellence in Advocacy and Jurisprudence II

DePaul University

Bachelor of Arts in English and Dramaturgy, cum laude

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