Leslie D. Corwin

New York

Duane Morris LLP
1540 Broadway
New York, NY 10036-4086
United States

Tel: +1 212 692 1047

Email: ldcorwin@duanemorris.com
Web: www.duanemorris.com

Leslie D. Corwin is an experienced trial and appellate lawyer focusing 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 disputes.

Mr. Corwin has litigated issues of first impression and his practice also includes elements of finance, securities, entertainment, employment law, ERISA, real estate and bankruptcy. He has represented and negotiated on behalf of principals, partners and senior executives of many of the country’s leading investment banks and private equity firms, international and national law and accounting firms, broker-dealers, investment banks, hedge funds and real estate developers.

Mr. Corwin is a member of the American Law Institute, the Committee on Character and Fitness for the Supreme Court of the State of New York, First Judicial Department, and serves on multiple other court committees. In 2019, he was honored with a Lifetime Achievement Award by the New York Law Journal and was named one of its inaugural New York Trailblazers. In May 2021, he was named to American Lawyer’s Inaugural List of Northeast Trailblazers. He is a frequent analyst on CNN, CNBC, Fox, The Wall Street Journal and The New York Times.

Mr. Corwin also writes extensively for law journals and industry publications and has lectured for the judiciary, bar, legal associations and law schools, industry organizations and Harvard Business School. The 1998 book, Law Firm Partnership Agreements, which he co-authored, is considered the definitive treatise on the subject. He participated in the Aspen Institute’s 2017 Justice & Society Seminar, an annual, invitation-only seminar co-founded by the late Supreme Court Justice Harry A. Blackmun that is composed of 20 distinguished participants from various professional fields.

Mr. Corwin is a 1973 graduate of Fordham University School of Law and a graduate of Brown University.

  • Duane Morris LLP
    – Of Counsel, 2021-present
  • Eisner LLP
    – Managing Partner, 2018-2021
  • Blank Rome
    – Partner, 2014-2018
  • Greenberg Traurig
    – Principal Shareholder, 1998-2014
  • Morrison Cohen LLP
    – Founding Partner, 1984-1998
  • New York
  • U.S. District Court for the Southern District of New York
  • U.S. District Court for the Eastern District of New York
  • U.S. District Court for the District of Colorado
  • U.S. Court of Appeals for the Second Circuit
  • U.S. Court of Appeals for the Third Circuit
  • Supreme Court of the United States
  • American Bar Association
    – Section of Business Law
  • American Bar Foundation Life Fellow
  • American Law Institute
  • Association of Professional Responsibility Lawyers
  • Association of the Bar of the City of New York
  • Supreme Court of the State of New York, First Judicial Department
    – Committee on Character and Fitness
  • Supreme Court of New York County
    – Independent Judicial Screening Committee
  • New York County Lawyers Association
    – Judiciary and Federal Courts Committees
  • Aspen Institute
    – Justice Circle
  • Fordham University School of Law
    – Law Advisory Committee
  • Neutral, National Arbitration and Mediation (NAM)
  • New York Bar Foundation Fellow
  • New York State Unified Court System’s Pro Bono Scholars Program Task Force
Fully cognizant that an appeal is not a second chance at trial, Duane Morris’ appellate lawyers apply their knowledge of the legal landscape and of procedural rules, their ability to identify issues and arguments most likely to be successful on appeal, and outstanding written and oral advocacy skills to serve our clients’ interests in the appellate arena. We handle appeals of varying degrees of complexity at all levels of the federal and state court systems in virtually all areas of substantive law and legal procedure, from writ proceedings involving a single pretrial motion to appeals involving some of the largest and most complex civil jury trials in the nation. We work with clients and trial counsel to prepare post-trial motions, to plan and prepare for possible appeals, and to evaluate the merits and likely outcomes of appeals. We also frequently appear as amicus curiae on behalf of individual clients or industry groups, providing an opportunity for clients to be heard in cases involving issues that affect their interests. Duane Morris’ appellate attorneys have handled hundreds of appeals and writ proceedings, including cases involving hundreds of millions of dollars in liability.

Duane Morris appellate attorneys tailor the services they provide to meet the client’s needs, goals and budget. Our appellate practice group comprises both a “core” group of appellate attorneys and a broader group of attorneys with experience in handling appeals in specific substantive areas, such as intellectual property, antitrust, bankruptcy, employment, and administrative law. This structure allows us to draw on substantial resources if necessary to serve the client’s interests. We offer not only flexibility in the services we provide, but are also open to considering alternate fee structures, including fixed fee and hybrid fee arrangements.

Duane Morris LLP, a law firm with more than 900 attorneys in offices across the United States and internationally, is asked by a broad array of clients to provide innovative solutions to today’s legal and business challenges.

From a partnership of four Philadelphia attorneys in 1904, the firm has grown to be among the 100 largest in the world. Duane Morris’​ lawyers now work out of offices in North America, Europe and Asia to address clients’​ issues around the globe. See the Harvard Business School’s second case study of the firm titled “Collaborating for Growth: Duane Morris in a Turbulent Legal Sector.”

Throughout all the growth, Duane Morris always has been guided by the same principle. At the heart of the firm is a partnership, an agreement to work together in the pursuit of its clients’​ goals. Under the leadership of the firm’s founders, and the influence of past and present chairmen, Duane Morris has embraced a culture of inclusiveness, congeniality and consensus building that is rare among law firms.