Gregory D. Len

Gregory D. Len

Registered Patent Attorney

Boston, MA
Phone: 617.204.5156    Fax: 617.204.5150

Gregory D. Len is a partner with Pepper Hamilton LLP, resident in the Boston office. As a registered patent attorney, Mr. Len concentrates his practice in intellectual property, focusing primarily on patent litigation, patent prosecution, and patent transactions. Specifically, he routinely handles many aspects of patent litigation from discovery disputes, to claim construction issues, to trial. Mr. Len has participated in multiple trials before the International Trade Commission representing plaintiffs in patent-based Section 337 investigations. He also is a member of the firm’s Sustainability, CleanTech and Climate Change Team.


  • J.D., cum laude, Suffolk University Law School, 2007
  • M.S., Mechanical Engineering, Bucknell University, 2001
  • B.S., Mechanical Engineering, Bucknell University, 1998

Bar Admissions

  • Massachusetts
  • U.S. Patent and Trademark Office

Court Admissions

  • U.S. District Court, District of Massachusetts

Practice Areas

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