Mark Hannemann is one of Kenyon & Kenyon LLP’s leading patent litigators and a member of the firm's Executive Committee. He has first-chair experience for both plaintiffs and defendants, in jury trials, bench trials, and ITC hearings, with frequent appearances in the Eastern District of Texas, the District of Delaware, and other U.S. district courts, as well as a successful appellate practice. Representative clients in such matters include Robert Bosch, Sony, and Volkswagen. Success for these clients has led to recommendations in the 2013 edition of The Legal 500 United States in the area of “IP – Patent Litigation: full coverage,” and the 2013 edition of New York Super Lawyers.

Mr. Hannemann graduated from Columbia Law School in 1995. After working as a commercial litigator at an international general-practice firm, he joined Kenyon in 1997.


bar and court admissions
  • New York
  • U.S. Court of Appeals for the Federal Circuit
  • U.S. Court of Appeals for the Second Circuit
  • U.S. District Court for the Southern District of New York