Sean McMahon

Sean P. McMahon


212-596-0502 (Direct)

Mr. McMahon’s practice includes counseling clients in the adoption and protection of trademarks in the United States and worldwide.  He has extensive experience with international laws relating to trademark protection and in the management of large international trademark portfolios.  He also handles all aspects of ex parte and inter partes proceedings before the Trademark Trial and Appeal Board of the U.S. Patent and Trademark Office.  Additionally, Mr. McMahon litigates various trademark and copyright related matters in federal court.


Trinity College Dublin, LL.B., 2003

The George Washington University Law School, LL.M., 2004


New York, 2006

Southern and Eastern Districts of New York, 2007

Professional Affiliations

Member, New York State Bar Association