Leslie D. Corwin


Leslie D. Corwin is an experienced trial and appellate lawyer who focuses his practice on disputes, mergers and acquisitions, liquidations, dissolutions, and bankruptcies. He has broad experience with the full range of valuation, accounting, and ethical issues that typically arise in business ruptures. He has litigated issues of first impression and his practice also includes elements of securities, employment law, ERISA, real estate, and bankruptcy.

Les has represented and negotiated on behalf of the principals, partners, and senior executives of many of the country’s leading investment banks and private equity firms; international and national law firms and accounting firms; broker-dealers; investment banks; hedge funds; and real estate developers.

Les has testified as an expert witness. He is a frequent analyst on CNN, CNBC, and Fox television, as well as for The Wall Street Journal and The New York Times. He also writes extensively for law journals and leading industry publications, and has lectured for the judiciary, bar and legal associations, industry organizations, and Harvard Business School. His 1998 book, Law Firm Partnership Agreements, which he co-authored, is considered the definitive treatise on the subject.


  • 2005–2018, Commercial Litigation, listed in Best Lawyers in America©
  • 2005–2017, Litigation – Real Estate, listed in Best Lawyers in America©
  • 2006–2008, 2010–2017, “Super Lawyer” in New York, listed by Super Lawyers
  • 2011–2012, “Legal Elite” for Litigation, listed by Avenue magazine
  • 2011, “Appellate Practice Group of the Year,” listed by Law360
  • 2009, recommended in PLC Which Lawyer?
  • Listed in Who’s Who in American Law
  • AV Preeminent, listed by Martindale-Hubbell



  • American Bar Association
  • American Law Institute
  • Association of Professional Responsibility Lawyers
  • New York City Bar Association
  • New York State Bar Association
Professional Activities

Les is a member of the Committee on Character and Fitness, Supreme Court of the State of New York, First Judicial Department, and of the American Law Institute. He is a Fellow of the American Bar Foundation and the New York Bar Foundation, as well as a member of the following organizations: the American Bar Association’s Section of Business Law; New York State Bar Association; the Association of the Bar of the City of New York; the National Arbitration Forum’s Panel of Arbitrators and Mediators; the Independent Judicial Screening Committee for the Supreme Court of New York County; the Judiciary and Federal Courts Committees for the New York County Lawyers Association; the Committee of NASD Regulators, Inc. on U-4 and U-5 Reporting; the Law Advisory Committee of Fordham University School of Law; and the Board of Directors of the Peter C. Alderman Foundation.

Les serves on the Task Force of the New York State Unified Court System’s Pro Bono Scholars Program, which provides law students with the opportunity to dedicate their last semester of law school to performing full time pro bono service for the poor.

In July 2017, Les participated in the Aspen Institute’s 2017 Justice & Society Seminar, an annual seminar co-founded by the late Supreme Court Justice Harry A. Blackmun that is composed of 20 distinguished participants from various professional fields, by invitation only.



  • New York
  • Supreme Court of the United States
  • U.S. District Court - Colorado
  • U.S. District Court - Eastern District of New York
  • U.S. District Court - Southern District of New York
  • United States Court of Appeals for the Second Circuit
  • United States Court of Appeals for the Third Circuit


  • Brown University, BA
  • Fordham University School of Law, JD