Practice Areas


  • "Super Lawyers," Intellectual Property, Connecticut, 2012, 2016-2018, 2020


  • U.S. District Court, Eastern District of Michigan, 2020
  • U.S. District Court, District of Massachusetts, 2001
  • U.S. District Court, District of Connecticut, 2000
  • State of Connecticut, 2000
  • Commonwealth of Massachusetts, 1997
  • U.S. Patent and Trademark Office, 1997


Western New England University School of Law, J.D., 1997

Massachusetts College of Pharmacy and Allied Health Sciences, B.S., 1992

Photo of Andrew C. Ryan

Andrew C. Ryan

Partner and Chair Post Grant Practice
860.286.2929, ext. 1127

Andrew Ryan is a partner in Cantor Colburn’s Litigation Practice Group and chairs the firm’s Post Grant Practice. He is a trial lawyer with almost 20 years' experience representing plaintiffs and defendants in patent cases and other intellectual property and complex litigation matters. He also has significant experience in inter partes review (IPR) and other adversarial proceedings in the U.S. Patent and Trademark Office. Andy has experience in a wide variety of industry areas, including electronics and semiconductors, robotics, automotive components, medical devices, pharmaceuticals, and biotechnology. He has participated in and led matters before the U.S. District Courts of CT, MA, NY, NJ, DE, FL, CA, TX,  the Patent Trial and Appeals Board (PTAB), the  International Trade Commission (ITC), and the U.S. Court of Appeals for the Federal Circuit.  

Trial Experience

Andy is experienced in the fields of patents, trademarks, trade dress, unfair competition, copyrights and trade secrets. He has represented clients in federal and state court in bench and jury trials, preliminary injunction proceedings, and in appellate matters. Andy's trial experience includes cases involving a variety of technologies, including shape memory alloys, medical stent technology, restorative dental materials, and industrial safety products, including earplugs and protective eye wear.

Experience Highlights

Partner, Cantor Colburn LLP, 2006-present

Associate, Cantor Colburn LLP, 1999-2006



Professional Affiliations

American Bar Association

American Intellectual Property Law Association

Connecticut Patent Law Association

Connecticut Bar Association

Intellectual Property Owners Association (IPO)