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William Isaacson
Partner at Paul, Weiss, Rifkind, Wharton & Garrison LLP
William Isaacson is a prominent partner at Paul, Weiss, Rifkind, Wharton & Garrison LLP, based in Washington, D.C. He specializes in complex commercial litigation, with a notable focus on antitrust law. His career is distinguished by numerous accolades, including being named the 2016 Litigator of the Year by The American Lawyer and recognized as a leading figure in his field by Chambers & Partners and Lawdragon for over a decade.125
Professional Background
- Current Position: Partner at Paul, Weiss since June 2020.
- Previous Experience: Partner at Boies Schiller Flexner LLP from September 1997 to June 2020.
- Education:
- Bachelor's degree in Political Science from the University of Redlands (1978-1982).
- Juris Doctor (JD) from the University of Virginia School of Law (1983-1986).
Areas of Expertise
Isaacson is renowned for his litigation skills across various domains, including:
- Antitrust cases
- Complex class actions
- Commercial torts
- Copyright disputes
- International arbitration
He has successfully represented both plaintiffs and defendants in high-stakes antitrust litigations, achieving significant verdicts and settlements. Notably, he led the case O'Bannon v. NCAA, which set a precedent in antitrust law concerning NCAA athletes.234
Recognition and Contributions
Isaacson has been consistently recognized as one of the top litigators in the United States:
- He is a Fellow of the American College of Trial Lawyers.
- He has been listed among the Lawdragon 500 for ten consecutive years and has received multiple awards for his contributions to trial law.156
- His pro bono work has also earned him recognition, including an award from Legal Counsel for the Elderly for his commitment to social justice.23
Contact Information
For professional inquiries, he can be reached at:
- Phone: +1-202-223-7313
- Email: wisaacson@paulweiss.com
William Isaacson's extensive experience and accolades position him as a leading figure in litigation and antitrust law, making significant contributions to both his clients and the legal community at large.

