When the Indiana steel mill department shutdown in 1984 where I had worked for nearly 8 years as a steelworker, including a stint as union representative, my family and I moved to Milwaukee. I started law school and after graduating in 1987, I served as a law clerk to the Hon. John L. Coffey, circuit judge for the U.S. Court of Appeals for the Seventh Circuit. My time as a lawyer has now spanned 30 years, and my practice is primarily dedicated to representing and fighting for justice for injured people, including those injured by nursing home neglect, by medical and legal malpractice, in automobile and trucking collisions, by people’s general negligence, by defective products, and for violations of individual’s civil rights (§1983 claims). During this time, whether by settlement or trial whenever necessary, I have successfully obtained millions over the years for those individuals and families I have been honored to represent.
Mark L. Thomsen
Recognized in Best Lawyers since 2005
Awarded Practice Areas
Civil Rights Law
Medical Malpractice Law - Plaintiffs
Personal Injury Litigation - Plaintiffs
Awarded Practice Areas
Civil Rights Law
Medical Malpractice Law - Plaintiffs
Personal Injury Litigation - Plaintiffs
Biography
Locations
Education
- Marquette University, J.D., graduated 1987
- Indiana University Northwest, B.G.S., graduated 1984
- Luther College, graduated 1976
- Loras College, graduated 1974
Bar Admissions
Affiliations
- American Association for Justice - Member
- American Bar Association - Member
- Milwaukee County Bar Association - Member
- State Bar of Wisconsin - Member
- Waukesha County Bar Association - Member
- Wisconsin Association for Justice - Board of Directors, 1994 - present
- Wisconsin Association for Justice - Chair of the Amicus Curiae Brief Committee, 1992-2001
- Wisconsin Association for Justice - Past-President, 2010
- Wisconsin Association for Justice - President, 2009
- Wisconsin Association for Justice - President-Elect, 2008
- Wisconsin Association for Justice - Secretary, 2006
- Wisconsin Association for Justice - Treasurer, 2005
- Wisconsin Association for Justice - Vice-President, 2007
- Wisconsin Association for Justice - Vice-President, 2007
Client Testimonials
Awards & Focus
Recognized in The Best Lawyers in America® 2026 for work in:
- Civil Rights Law
- Medical Malpractice Law - Plaintiffs
- Personal Injury Litigation - Plaintiffs
Additional Areas of Practice:
- Personal Injury Litigation
Awards:
- Wisconsin Super Lawyers, 2005- present
- Best Lawyers in America since 2009- Medical Malpractice Law - Plaintiffs- Personal Injury
Martindale-Hubbell, AV rated
Additional Information
- Mark's Favorites
Motto I get knocked down But I get up again. You’re never going to keep me down
Favorite Book The Savage Detectives by Roberto BolañoWhen
You're Not Working...I love spending time with my wife of 40 years, Grace (a retired teacher and principal), and with family and friends. We love to take the grandchildren fishing, we enjoy sailing, we love the Packers, and I deer hunt with her brothers whenever possible.
Favorite Quote "Never give in—never, never, never, never, in nothing great or small, large or petty, never give in except to convictions of honor and good sense. Never yield to force; never yield to the apparently overwhelming might of the enemy." Winston Churchill
Favorite Movie The Matrix
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