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Ben Hanrahan is a patent attorney with wide-ranging experience in the chemical, biomedical, electro-mechanical and pharmaceutical fields. Ben leverages his engineering background from academic and corporate settings to advise clients. Prior to joining Greenberg Traurig, Ben served as a U.S. Patent and Trademark Office patent examiner with negotiating authority in the biomedical surgery field.

Ben is skilled in drafting and prosecuting patent applications globally in a variety of technical areas including chemical, biomedical, pharmaceutical and electro-mechanical technologies. Ben has deep experience developing patent portfolio strategies across jurisdictions to create a well-ordered patent portfolio. Ben’s experience also includes inter partes review proceedings (IPRs), European opposition proceedings and patent opinion work.


  • Intellectual property
  • Patent prosecution



  • USPTO Patent Examiner with Negotiating Authority, 2008-2015
  • Trainer Assistant, USPTO Training Academy, 2012-2013
  • Office of Unfair Import Investigations – Extern, U.S. International Trade Commission, Washington, D.C., 2016
  • Commercial Litigation Branch, Intellectual Property Section – Extern, U.S. Department of Justice, Washington, D.C., 2016

Recognition & Leadership

  • Member, American Bar Association
  • Board of Directors & Treasurer, U of MN Alumni Association – Washington, D.C. Chapter, 2009-2013


  • J.D., The George Washington University Law School
  • B.S., Chemical Engineering, University of Minnesota
  • Minnesota
  • U.S. Patent and Trademark Office