Practice Areas



  • Best Lawyers, 2017-2024
  • IP Stars, Managing IP, Connecticut, USA, 2013-2023
  • Professional Excellence Award, The Connecticut Law Tribune, 2016
  • Martindale-Hubbell BV Rated


  • State of Michigan, 2004
  • U.S. Court of Appeals for the Federal Circuit,1994
  • U.S. Court of Appeals, 8th Circuit, 1994
  • District of Massachusetts, 1993
  • Commonwealth of Massachusetts, 1993
  • U.S. Patent and Trademark Office, 1992
  • State of New York, 1992
  • District of Connecticut, 1991
  • State of Connecticut, 1991


Western New England University School of Law, J.D., 1991

University of Massachusetts, MBA, 1986

Northeastern University, B.S., Electrical Engineering, with honors, 1982

Teaching Positions

  • Adjunct Professor of Patent Law, Western New England University School of Law
Photo of Philmore H. Colburn II

Philmore H. Colburn II

Co-Managing Partner
860.286.2929, ext. 1102

Co-Managing Partner Phil Colburn has transformed Cantor Colburn into one of the nation’s leading intellectual property law firms. Phil leads a team of attorneys, patent agents, and technical advisors who are committed to helping clients optimize their IP assets through the timely delivery of top quality, cost-effective legal services.

His counsel to Fortune 50 multinationals, as well as smaller companies and universities, is informed both by unique technical insights gained from his years of professional experience as a design engineer and by strategic perspectives derived from more than 30 years’ practice as an IP attorney. Taking a proactive, results-driven approach allows him to help clients define their needs and implement strategies that achieve their objectives. A frequent speaker on IP issues, Phil was an adjunct professor of Patent Law and Copyright Law at Western New England University School of Law.

Experience Highlights

Co-Managing Partner, Cantor Colburn LLP, 1999-present

Partner, Fishman, Dionne, Cantor and Colburn LLP, 1997-1999

Associate, Fishman, Dionne and Cantor, 1991-1996

Engineering Manager, Manage Incorporated, 1986-1990

Design Engineer, United Technologies Corporation, 1982-1985




Professional Affiliations

American Bar Association

American Intellectual Property Law Association

Connecticut Bar Association

Intellectual Property Owners Association, Vice Chair, Open Source Committee

International Trademark Association

  • Law Firm Committee, 2023-2025
  • Law Firm Committee, 2022-2023
  • Law Firm Culture Subcommittee, 2022-2023
  • Internet Committee, 2018-2019
  • Legal Resources and Communications Subcommittee, 2018-2019
  • LEAD Subcommittee, 2016-2017
  • Leadership Development Committee, 2016-2017
  • Leadership Academy Subcommittee, 2014-2015
  • Leadership Development Committee, 2014-2015

Michigan Bar Association

New York Intellectual Property Law Association