Practice Areas


  • State of Connecticut, 2018
  • United States District Court for the District of Connecticut, 2021


Quinnipiac University School of Law, JD, magna cum laude, 2018

University of Connecticut, BA, History, 2010

Photo of Katherine M. Tassmer

Katherine M. Tassmer

860.286.2929, ext. 1107

Katherine Tassmer assists clients with an array of patent and trademark infringement actions and intellectual property transactional matters.  She has experience in pharmaceutical litigation under the Hatch-Waxman Act, trademark litigation involving trade dress and unfair competition and false advertising, as well as drafting various intellectual property agreements, including settlement agreements, non-disclosure agreements, and manufacturing and supply agreements.  She also has experience assisting with post-grant proceedings before the United States Patent and Trademark Office Patent Trial and Appeal Board.  Katherine is knowledgeable in all phases of intellectual property litigation, from case inception through trial, and is well-versed in all aspects of electronic discovery.

Experience Highlights

Associate, Cantor Colburn LLP, 2018-present

Litigation Paralegal, Cantor Colburn LLP, 2012-2018

Business Development Associate, Gemma Renewable Power, LLC, 2011-2012




Professional Affiliations

Connecticut Bar Association

Phi Delta Phi International Legal Honor Society