Practice Areas



  • State of Wisconsin, 2010
  • State of Connecticut, 2009
  • U.S. Patent and Trademark Office, 2002


University of Connecticut School of Law, J.D., 2008

University of Colorado, American Cancer Society Postdoctoral Fellowship, 1992-1995

Yale University, Ph.D., Biophysical Chemistry, 1992

Providence College, B.S., Chemistry and Biology, summa cum laude, 1987

Photo of Karen A. LeCuyer, Ph.D.

Karen A. LeCuyer, Ph.D.

Partner and Vice Chair of the Pharmaceutical Patent Practice

Karen LeCuyer’s practice provides patent representation to clients working in the disciplines of chemistry, pharmaceuticals with an emphasis on formulations and drug delivery/nanomedicine, life science, biotechnology, biological polymers, dermal fillers, diagnostics, agriculture, animal health, materials science, and other areas. She has extensive experience in patent application, preparation, and prosecution, in the U.S. and overseas representing individual inventors, academic institutions, start-up companies as well as larger companies. Karen has also prepared patentability, invalidity, infringement/non-infringement, and freedom-to-operate opinions, particularly in the area of Abbreviated New Drug Application certifications. Additionally, Karen has extensive experience in patent searching as well as assisting clients to develop a proactive patent strategy for their products. Prior to practicing patent law, Karen was an assistant professor of biochemistry at the University of Connecticut Health Center.

Experience Highlights

Partner and Vice Chair, Pharmaceutical Patent Practice, Cantor Colburn LLP, 2021-present

Counsel, Cantor Colburn, 2015-2020

Associate, Cantor Colburn, 2009-2014

Patent Agent, Cantor Colburn LLP, 2001-2009

Assistant Professor of Biochemistry, University of Connecticut Health Center, 1995-2001




Professional Affiliations

American Chemical Society


Association of University Technology Managers

Intellectual Property Owners Association (IPO)

Community/Civic Involvement

Development Committee, Gilda's House