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William "Bill" Cassin

Of Counsel
Chicago
T.
312.517.9542
liamE

William has over seventeen years of experience as an attorney specializing in IP law, with nine years spent as either the head or sole in-house U.S. IP counsel for two different global multinational corporations. His practice covers all areas of IP law, including patent, trademark, copyright, and trade secret. William is a registered patent attorney before the United States Patent and Trademark Office.

William has advised U.S. and foreign companies on IP protection and procurement, portfolio management, strategy, enforcement, and risk mitigation. He routinely negotiates and drafts licenses and IP clauses in contracts and development agreements. William excels at cross-functional collaboration with business and technical team leaders to craft IP strategies to help achieve company business goals. His strong interpersonal skills and specialized experience complement his legal skills. William has a bachelor’s degree in mechanical engineering, with more than six years spent working as an R&D, product development, and production engineer.

Representative Experience

  • Represented a global leader in labeling and packaging materials in its acquisition of a leading provider of sports apparel customization & retail experience technology.
  • Intellectual Property
  • Patents
  • Trademarks
  • Mergers, Acquisitions & Divestitures
  • Artificial Intelligence (AI)
  • Loyola University Chicago School of Law, J.D.
    • Dean’s List
    • CALI Award
  • University of Illinois - Urbana-Champaign, Bachelor of Science in Mechanical Engineering
  • Illinois
  • United States Patent and Trademark Office
News
November 8, 2023
William Cassin mentioned in Crain's Chicago People on the Move
October 12, 2023
Benesch Adds Of Counsel to Intellectual Property Team in Chicago
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