About Attorney Edward J. Callaghan

Ed assists domestic and international clients in patent prosecution in a wide range of technical fields, particularly in the mechanical and chemical arts. Ed has substantial experience in assisting clients in patent enforcement and litigation.

Prior Experience

  • Before joining Collard & Roe, Ed was an associate at a major New York City Intellectual Property law firm. There he gained extensive patent discovery and trial experience as a member of the litigation team that successfully defended a leading pharmaceutical manufacturer against invalidity claims on two patents relating to one of the world's most widely-sold prescription drugs.
  • Prior to practicing intellectual property law, Ed was a project engineer with a Long Island-based electronics firm and was awarded two U.S. patents for inventions relating to electronic article security devices.

Professional Associations

  • American Bar Association
  • New York State Bar Association
  • Nassau County Bar Association
  • Federal Bar Association
  • Federal Bar Council
  • American Intellectual Property Law Association
  • International Intellectual Property Society

Publications and Presentations

  • Articles on intellectual property in the Nassau Lawyer, the Suffolk Lawyer and the Attorney of Nassau

Bar Admissions

  • New Jersey, 2001
  • New York, 2002
  • U.S. District Courts – Eastern and Southern Districts of New York, District of New Jersey, District of Colorado
  • Registered to practice before the U.S. Patent and Trademark Office, 2000


  • J.D., summa cum laude, Touro College Jacob D. Fuchsberg Law Center, 2001
  • Member, Touro Law Review
  • B.S., mechanical engineering, Worcester Polytechnic Institute, 1990

Practice Areas