Heyl Royster

Karl Bayer

Chicago, IL

Joined Firm in 2020

Karl has dedicated his practice to litigation since 1996, trying more than 100 jury trials in Cook and surrounding collar counties.

  • Appointed Special Assistant to the Illinois Attorney General 
  • Contemnor in landmark Illinois Supreme Court decision 
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Karl Bayer

Attorney in Chicago, IL

Karl Bayer joined Heyl Royster's Chicago office in 2020 as an Of Counsel attorney and was elevated to Partner in 2023. Working solely in litigation since 1996, Karl has tried over 100 jury trials, and has brought countless matters to arbitration or mediation. As a formerly appointed Special Assistant to the State of Illinois Attorney General, he handles defense and commercial litigation files in Cook and surrounding collar counties.

Karl graduated with a Political Science and Latin degree from Knox College and received his J.D. from John Marshall Law School in Chicago. Karl lives in Elgin, Illinois, with his wife and two children.



J.D., The John Marshall Law School

B.A., Knox College, Political Science and Latin

Licensure(s) and Admission(s)

State Courts of Illinois

United States District Court for the Northern District of Illinois


  • The contemnor in the landmark Illinois Supreme Court decision of Palm v. Holocker, Karl Bayer, contemnor, 2018 IL 123152, 131 N.E.3d 462 protecting the health information of defendants who have not placed their health information at issue in the litigation.



The Importance of Attacking Proximate Cause - Condition vs. Cause,” Heyl Royster's 34th Annual Claims Handling Seminar (2023)

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