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  3. Klaus U. Thiedmann

As a shareholder in Reinhart’s Corporate Law and International practices, Klaus Thiedmann leverages his dual legal education and experience in both the United States and Germany to bring valuable perspective to clients involved in global business deals. His unique skill set spans borders and cultures, and he represents both domestic and international clients in sophisticated global business transactions.

Klaus works closely with European companies and their subsidiaries in the United States, advises U.S. businesses entering and expanding in Europe, and represents European clients on boards of directors of U.S. companies. He is widely regarded for his skilled counsel and has handled hundreds of mergers, acquisitions and divestitures representing foreign and domestic companies and/or their stockholders.

He began his career in international and commercial law with Rossbach & Kirchner in Frankfurt am Main, Germany. He eventually joined a large Chicago-based law firm, and subsequently started his own practice which merged to become Thiedmann & Edler before ultimately joining Reinhart.

Fluent in German and English, Klaus is a straightforward, efficient legal partner dedicated to advocating for his clients and earning their trust. He enjoys collaborating with clients and colleagues and exploring new, cutting-edge ideas and technologies..

Klaus is an experienced seminar speaker and co-author of a treatise on advertising law in the United States and Europe. He is a Fulbright International Scholar and recipient of the German Foreign Office Award. Klaus studied at the University of Frankfurt, the College of Europe in Bruges, Belgium, Cornell University and Northwestern University. Having obtained a law degree in West Germany and Juris Doctor from Northwestern University Pritzker School of Law, Klaus is admitted to the Illinois State Bar.

Klaus especially enjoys mentoring young people, hosting international exchange students and assisting young professionals in career opportunities. He is a dedicated runner and racewalker, regularly joining Masters competitions. He has won many U.S. Masters Championships and a World Masters Championship.


  • J.D., Northwestern University Pritzker School of Law
  • LL.B., University of Frankfurt, Germany

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