Mark Chapman is a partner in the New York office. Mark’s practice focuses on representing domestic and foreign high-technology clients in patent infringement and related litigation, but also includes opinions, licensing and transactions. Mark has experience with all phases of patent infringement litigation, including fact and expert discovery, Markman and motion practice, trial and appeal, as well as ITC proceedings. Mark also has experience with both inter partes and ex parte patent office reexamination proceedings. Mark has also coordinated and supported foreign patent litigation and related patent office proceedings, including trials and appeals, with local counsel in Canada, the United Kingdom, the Netherlands, Germany, France and Italy. 

Mark’s technical background is in engineering physics and his patent experience has involved a wide variety of technologies, including 3D imaging, automotive acceleration sensors, Blu-ray and DVD players, stents, dental floss, endodontic instruments, GPS navigation, high-throughput experimentation, check imaging, industrial combustion burners, interactive lottery technology, mass spectrometers, optical fiber, telecommunications, video surveillance, and wrist-watch designs.

Prior to joining Kenyon & Kenyon, Mark practiced transactional corporate and securities law at a top New York law firm. Prior to that, Mark served as a law clerk to the Honorable Mr. Justice John C. Major of the Supreme Court of Canada in Ottawa. Mark also worked as an articling student at top corporate and intellectual property law firms in Toronto after graduating from McGill law school in Montreal.

representative matters


  • MONKEYmedia v. Buena Vista Home Entertainment, et al.

    Currently representing Sony defendants in multi-patent litigation regarding interactive Blu-ray and DVD video technology. Secured a favorable Markman decision for one patent family. Also secured the rejection of claims in Patent Office reexaminations of the other patent family and a stay of the litigation pending reexamination. Case Number: 1:10-cv-00533-SS (W.D. Tex.)

  • Criminal Activity Surveillance v. ADT Security Services, et al.

    Representing Bosch in patent litigation regarding video surveillance technology. Case Number: 6:11-cv-00494-LED (E.D. Tex.)
  • Technology Patents v. T-Mobile (UK), et al.

    Represented Deutsche Telekom and foreign T-Mobile mobile carriers in patent litigation regarding international paging technology. Secured a dismissal for lack of personal jurisdiction which was affirmed on appeal. Case Number: 07-cv-3012 (D. Md.)
  • In re Certain Cameras and Mobile Devices

    Represented Sony defendants in ITC case against HumanEyes Technologies regarding 3D camera technology. HumanEyes terminated the case at the end of fact discovery. ITC Inv. 337-TA-842

  • In re Certain Automotive GPS Navigation Systems

    Represented Bosch as supplier in ITC case against Beacon Navigation regarding GPS navigation system technology in automobiles. Beacon terminated the case during fact discovery. ITC Inv. 337-TA-814

  • Wacoh v. Robert Bosch and Wacoh v. Analog Devices, et al.

    Represented Bosch in patent litigations regarding automotive acceleration and angular sensor technology in automobiles. Secured favorable Markman decision which led to favorable settlement. Case Numbers: 2:09-cv-10119-JC (E.D. Mich.) and 1:10-cv-00617-PD (D. Del.)

  • Symbol Technologies v. Janam Technologies

    Represented Janam in patent litigation regarding mobile wireless technology. Defeated motion for a preliminary injunction. Case Number: 08-340-JJF (D. Del.)

  • Innovative Biometric Technology v. Lenovo (United States), et al.

    Represented Sony in patent litigation regarding biometric security technology. Secured dismissal from litigation based on improper joinder. Case Number: 09-81046-CIV (S.D. Fla.)

  • Cartier v. Wing Hon Metal Manufactory

    Represented Cartier in declaratory judgment action challenging patent regarding watch design technology. Secured favorable settlement. Case Number: 06-1747 (D.D.C.)

  • In re Certain Endodontic Instruments

    Represented Guidance Endodontics in ITC case against Dentsply regarding endodontic drill technology. Secured favorable settlement. ITC Inv. No. 337-TA-610

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