Karen Cassidy Selvaggio is a partner in our Orange County office. Her practice is focused on litigation with an emphasis on patents, trademarks, trade secrets, unfair competition claims, and data privacy claims.
Karen has represented clients in a variety of industries in district courts throughout the country and before the United States Court of Appeals for the Federal Circuit. She has extensive experience in the area of pharmaceutical litigation, particularly litigation involving Abbreviated New Drug Applications under the Hatch-Waxman Act. In addition to her work in the pharmaceutical industry, Karen has experience litigating cases relating to data privacy claims, including the defense of class actions in this area.
Karen is also active in firm management, serving on the firm’s Executive Committee and Litigation Committee.
Prior to joining the firm, Karen earned her law degree from the George Washington University Law School and a bachelor’s degree in chemistry from Carroll College. Karen is also a registered patent attorney.
The George Washington University Law School, J.D.
Carroll College, B.A., Chemistry
State Bar of California
U.S. District Court – Central District of California
U.S. District Court – Northern District of California
U.S. Patent and Trademark Office
Chemical, Industrial & Materials
Construction & Home Improvement
Medical Devices & Procedures
Pharmaceuticals
Biosimilars
Advertising, Media & Entertainment Practice
Appellate Litigation
Copyright
Data Privacy
Due Diligence
Hatch-Waxman Litigation
IP Strategy
IP Transactions, Agreements & Venture Capital
Litigation
Opinions & Counseling
Trade Secret
Trade Secret & Employee Mobility Litigation
Trade Secret & Employee Mobility Litigation
Trade Secret Protection Advice & Counseling
Transactions
- Recognized in the “Best Lawyers 2025 Guide: Ones to Watch” for Patent Litigation in Best Lawyers in America (2024)
- Named to Benchmark Litigation “40 & Under” List (2022-2025)
American Bar Association (ABA)
Orange County Intellectual Property Law Association (OCIPLA)
Association of Business Trial Lawyers (ABTL)