Stephen litigates mass torts, False Claims Act, antitrust, securities, and white-collar criminal cases throughout the United States. He has tried dozens of cases before juries in federal and state trial courts, with first-chair wins in both government and private practice cases, and has successfully argued significant matters before federal and state appellate courts. His private practice clients include major consumer products, food, pharmaceutical, medical device, energy, entertainment, and real estate companies. Stephen has defended companies in class actions and multi-district litigations. Many of the cases have centered on allegations of unfair or deceptive marketing.
Experience
Representative matters
Experience
Recognitions
- Recognized as a U.S. News – Best Lawyers® Lawyer of the Year in Philadelphia in the area of Mass Tort Litigation / Class Actions – Defendants, 2026
- Recognized by Lexology in the Lexology Index: Thought Leaders USA, 2026
Ranked in Chambers USA for Pennsylvania Litigation: Product Liability (Band 1) and Nationwide Product Liability & Mass Torts, 2025-2026
Credentials
Education
- University of Chicago Law School, 1985, J.D., cum laude; Order of the Coif, Member of the Law Review
- Harvard College, 1981, A.B., magna cum laude
Professional admissions & qualifications
- California
- Pennsylvania
- District of Columbia
Court admissions
- U.S. District Court - Central District of California
- U.S. District Court - Eastern District of California
- U.S. District Court - Southern District of California
- U.S. District Court - Northern District of California
- U.S. District Court - Eastern District of Pennsylvania
- U.S. District Court - Middle District of Pennsylvania
- U.S. District Court - District of Columbia
- U.S. District Court - Northern District of Illinois
- U.S. Court of Appeals - Third Circuit
- U.S. Court of Appeals - Seventh Circuit
- U.S. Court of Appeals - Ninth Circuit
- U.S. Court of Appeals - Eleventh Circuit
- U.S. Court of Appeals - District of Columbia Circuit
- U.S. Supreme Court
Professional affiliations
- Member, Lawyers for Civil Justice
- Fellow, American Bar Foundation
- Adjunct Professor, University of Pennsylvania Law School, 2011-present
- Master, University of Pennsylvania Inn of Court
- Member, Defense Research Institute
- Senior Fellow, Litigation Counsel of America
- Member, Trial Law Institute
- Member, Diversity Law Institute
- Barrister, Order of Veritas
- Advocate, Order of Certus
- Member, Rabiej Litigation Law Center’s Advisory Council
Clerkships
- U.S. Court of Appeals - Ninth Circuit, Honorable William A. Norris