• Patent Prosecution – U.S.
  • Patent Prosecution – Intl.
  • Patent Clearances & Opinions
  • IP Litigation
  • Transactions and M&A
  • Technology Licensing

Bar Admissions

  • Illinois
  • Michigan
  • U.S. Patent & Trademark Office
  • N.D. Ill.



  • J.D., Chicago-Kent College of Law, 1998
  • M.B.A., Olivet Nazarene Univ., 1995
  • B.S. Computer Engineering, Univ. of Michigan, 1998


Professional Memberships

  • American Bar Association
  • American Intellectual Property Law Association
  • Illinois State Bar Association
  • Chicago Bar Association
  • Chicago Intellectual Property Alliance

Gregory B. Gulliver, J.D., M.B.A.



Patent attorney Gregory Gulliver is a founding member of AddyHart P.C. His intellectual property practice is focused on complex patent prosecution and patent-related client counseling. He also is an experienced litigator, including cases in both state and federal courts.

Gulliver provides a broad range of intellectual property advisory and litigation services, including domestic and international patent counseling; patent prosecution, opinion work, clearance, and strategies; transactional matters related to patents; trademarks, copyrights, and licensing issues, and business methodology.

As a result of his strong technical background and vast patent prosecution experience, Gregory is often retained to develop and manage patent portfolios involving various types of sophisticated technology. He uniquely combines engineering, law, and business acumen, enabling him to assist corporate clients in making strategic decisions regarding their intellectual property assets.

Gulliver also assists in commercial and intellectual property litigation, especially in patent infringement proceedings involving complex electrical or software-based technologies. He regularly counsels clients on infringement and patent validity issues, as well as freedom-to-operate matters and conflict avoidance. He has prepared and prosecuted hundreds of patent applications in such diverse technical areas as cellular infrastructure and handsets, digital and analog circuitry, wireless communication base sites, RF, telephony, circuit-based telephone over cable, cable modems, network protocols, audio devices, CMOS imaging, semiconductors, big data processing, blockchain, GPS chips, hardware, software and software-based processes, and mechanical innovations.

Gulliver’s former professional experience includes nine years as a software engineer at Motorola, Inc., including within its Cellular Infrastructure Group and its Multimedia, Information, and Messaging Sector, and at Bell Northern Research. His engineering expertise includes work with cellular and cable communication systems and handsets, as well as various communication standards and network protocols.

Prior to joining AddyHart P.C., Gulliver was a founding member of the Eclipse Group LLP. He has also practiced intellectual property law at Sonnenschein, Nath & Rosenthal (now Dentons), and at Wildman Harrold Allen & Dixon (now Locke Lord).

Gulliver is an editor of the Supplement for Chapter 10: Patents and the Internet in BNA’s IP Law in Cyberspace, which addresses patentable subject-matter under 35 U.S.C. §101 before the U.S. Patent and Trademark Office.

  • Representative Litigation

    1. Wildcat Licensing WI LLC v. Atlas Copco and Assembly Systems, LLC, General Motors, LLC, Faurecia Automotive Seating, LLC and Magna Int’l Inc. (Fed. Cir. 2022). Represent appellant on appeal of a decision where the PTAB invalidated two Reissue patents related to automotive component manufacturing.
    2. Navistar Inc. v. Fatigue Fracture Tech., LLC (PTAB pending). Represent respondent in inter partes review proceeding on patent for automotive part manufacturing process.
    3. In re Fatigue Fracture Tech., LLC (PTAB). Represented patent owner on appeal of defense of ex parte reexamination relating to automotive part technology.