Casey L. Matthiesen



Casey’s past – adopted at birth, growing up on a rural family farm in southwestern Minnesota, and recently working toward formal enrollment in the Yankton Sioux Tribe – is a prologue to her personal values and professional passions at Robins Kaplan.  Today her law practice focuses on taking difficult cases and re-writing the odds for her clients in high stakes litigation.  

The lessons Casey learned on the farm continue to guide her as a lawyer: tenacity, creativity, old-fashioned hard work, and most importantly never giving up on a neighbor in need.  Casey’s unique life experiences are an important asset to her clients because they guide her creative and tenacious approach to difficult situations.  Casey studied Art and Italian Language in Florence Italy and she worked for a highly regarded lobbyist during a South Dakota Legislative Session.  Her next steps took her to the doors of the British Parliament in Great Britain, where she interned for a Member of the House of Commons.  She has been an Associate Student at the London School of Economics and a law clerk for the Hennepin County Attorney’s Office.

Casey primarily practices in the areas of medical malpractice, personal injury, business litigation, and American Indian law and policy. Prior to joining Robins Kaplan and entering the private practice of law, Casey attended the University of South Dakota where she received dual bachelor’s degrees in Criminal Justice and Political Science.  She is a graduate of the University of St. Thomas Law School in Minneapolis, MN.

  • Cozen O’Connor Bankruptcy Litigation Clinic (2020)
  • Leadership Council on Legal Diversity Scholar (2018)
  • Minnesota American Indian Bar Association Scholarship (2019, 2020)
  • The Sanneh Foundation, Associate Board Member 
Bar Admissions
  • Minnesota
  • U.S. District Court, District of Minnesota
  • U.S. District Court, District of North Dakota
  • University of St. Thomas School of Law, J.D. (2020) 
  • University of South Dakota, B.A., magna cum laude (2017)
Professional Associations
  • Federal Bar Association
  • Hennepin County Bar Association 
  • Minnesota American Indian Bar Association 
  • Minnesota Association for Justice
  • Minnesota State Bar Association
  • Minnesota Women Lawyers 


Links to full publications and news releases.


British Parliament and the South Dakota Legislature
University of South Dakota Department of Political Science Farber Newsletter, Vol. 71, 35
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