Louis H. Weinstein
Retired
Experience
Partner
Prior to his retirement in 2025, Louis Weinstein was a registered patent attorney with a broad background and extensive experience as lead counsel in Hatch-Waxman litigations. He was responsible for all aspects of litigation in numerous generic challenges to innovator drugs, including: Plavix, Lamisil, Avelox, Prozac 90, Lotrel, Namenda, Prilosec OTC, Amitiza, Fetzima and Otezla. His client counseling duties included the drafting and supervision of opinions on patents covering compositions of matter, pharmaceutical formulations, methods of treatment and industrial processes.
Mr. Weinstein’s diverse experience also included representing clients in District Court and before the U.S. Patent Office in matters involving organic electroluminescent compounds, metallocene-based polyethylene polymerization catalysts, rigid polyurethane applications, and phospholipid microbubbles as ultrasound contrast agents. Early in his legal career he was involved in environmental and mass tort litigations and the oversight of environmental remediations.
He earned a B.A. in Chemistry and Mathematics from Amherst College (1979), M.S. degrees in Industrial Administration and Chemical Engineering from Carnegie-Mellon University (1983), a Certificate in Accounting from the University of Pittsburgh (1987), and a J.D. from the University of Chicago (1990).
Newsroom +
Practices
- IP Hatch-Waxman Act
- IP, Technology & e-Commerce
- Litigation & Alternative Dispute Resolution
- COVID-19 Response & Resources
Education
- J.D., University of Chicago Law School, 1990
- University of Pittsburgh, 1987
- M.S.C.H.E., Carnegie-Mellon University, 1983
- B.A., Amherst College, 1979
Admissions
- New Jersey
- New York
- United States Court of Appeals for the Federal Circuit
- United States Patent and Trademark Office