William Thornewell


William Thornwell, Associate

William Thornwell, Associate

William Thornewell has experience handling a wide range of intellectual property issues involving patents, trademarks, and unfair competition claims. William has assisted clients in many industries including medical technology, consumer products, and industrial machinery and manufacturing.

William assists clients in protecting their intellectual property at all phases, from inception to enforcement. He has helped clients identify and refine new ideas in order to obtain protection. He has experience providing opinions on patentability, freedom-to-operate studies, infringement, and validity issues so that clients can make informed decisions on intellectual property matters. William also handles the enforcement of intellectual property rights. He has experience with litigation both to enforce rights and to defend clients from claims of infringement involving utility and design patents, trademarks and trade dress, and unfair competition claims.

William received his J.D. from Fordham Law School, cum laude, and was awarded the Thomas F. Reddy, Jr. Prize for excellence in intellectual property law. He has published articles addressing patent and trademark issues. He holds a B.S. in Mechanical Engineering, from Rensselaer Polytechnic Institute, graduating magna cum laude. He also has prior experience working in the defense industry supporting engineering projects involving sophisticated electronics packages and complex mechanical systems for aerospace and sub-sea applications.

Bar admissons 

New York


Court admissions

U.S. District Court for the Southern District of New York

U.S. District Court for the Eastern District of New York 


  • Fordham University School of Law, J.D., cum laude, 2006

  • Rensselaer Polytechnic Institute, B.S. in Mechanical Engineering, magna cum laude, 2003

Representative Matters