Mark Hannemann

Partner at Shearman & Sterling LLP

Mark Hannemann has been litigating patent cases for more than 25 years. He is a partner in the litigation practice of Shearman & Sterling LLP and is based in the firm’s New York office. He is a leading patent litigator with extensive first-chair experience for both plaintiffs and defendants in jury trials, bench trials, International Trade Commission hearings and Patent Office proceedings. He has frequently appeared in the Eastern District of Texas, the District of Delaware and other US district courts, and has a successful appellate practice. Mr Hannemann has experience across a broad spectrum of industries, including consumer electronics, computer networking, memory systems, LEDs, software and many different automotive systems. He also serves as the IP editor of Shearman & Sterling’s Need-to-Know Litigation Weekly newsletter regarding notable developments and trends in various areas of IP litigation.

Mr Hannemann’s frequent clients have included OSRAM, Robert Bosch and Volkswagen. He is recommended in the 2013 edition of The Legal 500 in the area of “IP – Patent Litigation: full coverage” and the 2014 edition of New York Super Lawyers. He has also been recognised as a New York “IP Star” by Managing Intellectual Property (2014). Most recently, IAM Patent 1000 recommended him as a “legal theory and strategy thinker” (2020), noting that the Shearman team includes “an expert panel of patent litigators”.

Professional associations

  • Federal Circuit Bar Association

Sample client list

  • OSRAM GmbH
  • Robert Bosch GmbH
  • SS&C Technologies Holdings, Inc
  • Volkswagen AG

Firm details

Shearman & Sterling LLP
599 Lexington Avenue
New York NY 10022-6069
United States

Contact details

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