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Jeffrey J. GreenbaumMember

Newark, NJ
(973) 643-5430

Jeffrey J. Greenbaum, Chair of the Firm’s Class Action Practice Group, is an active litigator and trial attorney in the Federal and State Courts with a specialty in complex business litigation and in defending class action litigation. In addition to being a long-serving member of the Lawyers Advisory Committee of the U.S. District Court for the District of New Jersey, Mr. Greenbaum has handled cases of national prominence, chaired the ABA Section of Litigation Class Actions and Derivative Suits Committee and is a frequent lecturer in the class action field. He has handled numerous matters involving securities, RICO and consumer fraud, class actions and derivative suits, professional liability, antitrust, banking, chancery practice, contracts, real estate, trade secrets and unfair competition.

Mr. Greenbaum is a leader in the ABA Section of Litigation and the Association of the Federal Bar of New Jersey, where he served as President. In the ABA Section of Litigation, he was an elected Section Officer, member of the Section’s Executive Committee and governing Council and was its liaison to the U.S. Judicial Conference Advisory Committee on Civil Rules, the U.S. Supreme Court Committee responsible for recommending changes to the Federal Rules of Civil Procedure. He is currently Co-Chair of the Section’s Federal Practice Task Force and its Task Force on Efficient Justice. He was also Co-Chair of the Class Actions and Derivative Suits Committee. Mr. Greenbaum led a committee to review for the ABA the first proposed revisions to the Federal Class Action Rule, Rule 23, testified on those provisions before the U.S. Supreme Court’s Advisory Committee on Civil Rules and co-authored a report for the Section of Litigation on proposed federal legislation involving class actions.   Read More...

Mr. Greenbaum was also a member of the ABA President’s Class Action Task Force, a group that developed the ABA position on federal legislation seeking class action reform. Mr. Greenbaum was a presenter before the U.S. Supreme Court’s Advisory Committee on Civil Rules at its Class Action Conference, a conference of the nation’s leading class action practitioners, judges and law professors, designed to obtain input on proposed changes to the class action rule. He spoke on the subject of Overlapping, Competing and Duplicative Class Actions – The Practitioner’s Perspective. He was also a panelist at the Advisory Committee’s Duke Conference exploring litigation costs and delay.

Mr. Greenbaum has represented the Philippine Government in its search for purloined assets of the late deposed President Ferdinand E. Marcos, obtaining the first judgment in the United States that restored property to the Philippine Government.

Mr. Greenbaum began his career as a judicial clerk to the Honorable Frederick B. Lacey, U.S. District Court, District of New Jersey, and served as an Assistant U.S. Attorney, where he handled complex fraud cases. He is a Certified Civil Trial Attorney.   Read Less

Jeffrey J. Greenbaum, Chair of the Firm’s Class Action Practice Group, is an active litigator and trial attorney in the Federal and State Courts with a specialty in complex business litigation and in defending class action litigation. In addition to being a long-serving member of the Lawyers Advisory Committee of the U.S. District Court for the District of New Jersey, Mr. Greenbaum has handled cases of national prominence, chaired the ABA Section of Litigation Class Actions and Derivative Suits Committee and is a frequent lecturer in the class action field. He has handled numerous matters involving securities, RICO and consumer fraud, class actions and derivative suits, professional liability, antitrust, banking, chancery practice, contracts, real estate, trade secrets and unfair competition.

Mr. Greenbaum is a leader in the ABA Section of Litigation and the Association of the Federal Bar of New Jersey, where he served as President. In the ABA Section of Litigation, he was an elected Section Officer, member of the Section’s Executive Committee and governing Council and was its liaison to the U.S. Judicial Conference Advisory Committee on Civil Rules, the U.S. Supreme Court Committee responsible for recommending changes to the Federal Rules of Civil Procedure. He is currently Co-Chair of the Section’s Federal Practice Task Force and its Task Force on Efficient Justice. He was also Co-Chair of the Class Actions and Derivative Suits Committee. Mr. Greenbaum led a committee to review for the ABA the first proposed revisions to the Federal Class Action Rule, Rule 23, testified on those provisions before the U.S. Supreme Court’s Advisory Committee on Civil Rules and co-authored a report for the Section of Litigation on proposed federal legislation involving class actions.

Mr. Greenbaum was also a member of the ABA President’s Class Action Task Force, a group that developed the ABA position on federal legislation seeking class action reform. Mr. Greenbaum was a presenter before the U.S. Supreme Court’s Advisory Committee on Civil Rules at its Class Action Conference, a conference of the nation’s leading class action practitioners, judges and law professors, designed to obtain input on proposed changes to the class action rule. He spoke on the subject of Overlapping, Competing and Duplicative Class Actions – The Practitioner’s Perspective. He was also a panelist at the Advisory Committee’s Duke Conference exploring litigation costs and delay.

Mr. Greenbaum has represented the Philippine Government in its search for purloined assets of the late deposed President Ferdinand E. Marcos, obtaining the first judgment in the United States that restored property to the Philippine Government.

Mr. Greenbaum began his career as a judicial clerk to the Honorable Frederick B. Lacey, U.S. District Court, District of New Jersey, and served as an Assistant U.S. Attorney, where he handled complex fraud cases. He is a Certified Civil Trial Attorney.

Practices

  • Class Action Litigation
  • Litigation
  • Securities Litigation
  • Antitrust

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Court Admissions

  • U.S. District Court, District of New Jersey
  • U.S. District Court, Southern District of New York
  • U.S. District Court, Eastern District of New York
  • U.S. Court of Appeals, Third Circuit
  • U.S. Court of Appeals, Second Circuit
  • U.S. Court of Appeals, Tenth Circuit
  • U.S. Court of Appeals, Fourth Circuit
  • U.S. Court of Appeals, Sixth Circuit
  • U.S. Court of Appeals, Ninth Circuit
  • U.S. Supreme Court
  • U.S. Tax Court

Representative Decisions

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Newsroom

Press Releases

In the News

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Presentations

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Publications

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Rankings and Recognition

  • Selected for inclusion in:
  • Chambers USA: America’s Leading Lawyers for Business®* 2006 and 2008-2024, New Jersey Litigation: General Commercial
  • The Best Lawyers in America®* 2005-2025, Bet-the-Company Litigation; Commercial Litigation; Mass Tort Litigation/Class Action - Defendants; Litigation - Banking & Finance; Litigation - Mergers & Acquisitions; Litigation - Real Estate; Litigation - Securities
  • The Best Lawyers in America®* Newark "Lawyer of the Year" 2016, 2019, 2022 and 2024, Litigation - Securities
  • The Best Lawyers in America®* Newark "Lawyer of the Year" 2015 and 2020, Litigation - Real Estate
  • The Best Lawyers in America®* Newark "Lawyer of the Year" 2013, Litigation - Banking & Finance
  • Benchmark Litigation: America’s Leading Litigation Firms and Attorneys®* "Local Litigation Star" 2008-2025
  • New Jersey Super Lawyers®* 2005-2024, Class Action/Mass Torts: Defense; Business Litigation; Securities Litigation
  • New Jersey Super Lawyers®* "Top 100 Super Lawyers" 2006 and 2008
  • NJBIZ®* "ICON Honors" 2024
  • Martindale-Hubbell®* AV Rating

* See Award Methodology. No aspect of this advertisement has been approved by the Supreme Court of New Jersey.

Affiliations

  • Certified Civil Trial Attorney, Supreme Court of New Jersey Board on Trial Attorney Certification

  • Former President, Association of the Federal Bar of New Jersey

  • Member, Lawyers Advisory Committee of the U.S. District Court for the District of New Jersey

  • Former Member, New Jersey Supreme Court Advisory Committee on Expedited Civil Actions

  • Arbitrator, United States District Court, District of New Jersey and Superior Court of New Jersey

  • Member, Supreme Court of New Jersey Civil Practice Committee (1996-2008)

  • Former Member, Supreme Court of New Jersey Committee on Model Jury Charges

  • Member, Advisory Board of BNA Class Action Litigation Report

  • Former Member, American Bar Association President’s Class Action Task Force

  • Fellow, American Bar Foundation (New Jersey Chapter)

  • Fellow, Litigation Counsel of America

  • Former Member, Editorial Board of New Jersey Lawyer

  • Member, American Law Institute

    — Member, Consultative Group on Aggregate Litigation

  • Member, Securities Industry and Financial Markets Association

  • Member, Section of Litigation, American Bar Association

    — Liaison to the U.S. Judicial Conference Advisory Committee on Civil Rules (2003-2009)
    — Former Revenue Officer
    — Former Member, Executive Committee and governing Council
    — Co-Chair, Amicus Briefs Committee
    — Co-Chair, Federal Practice Task Force (Recipient of Section of Litigation Award for Outstanding Leadership for work on Task Force)
    — Co-Chair, Task Force on Efficient Justice
    — Co-Director, Division VI – The Profession (2000-2002)
    — Former Co-Chair, Class Actions and Derivative Suits Committee
    — Co-Chair, Task Force on The Independent Lawyer (studied whether counsel may sit on boards of their clients and to what extent attorneys may do business with their clients) (1996-2000)
    — Member, Committee on Corporate Counsel
    — Member, Committee on International Law
    — Member, Professional Liability Committee

  • Member, New Jersey State Bar Association

    — Former Co-Chair and Founder, Class Action Litigation Committee
    — NJSBA Delegate, American Bar Association House of Delegates
    — Member, Federal Practice Committee

Education

  • J.D., University of Michigan Law School, cum laude
  • B.S., The Wharton School, University of Pennsylvania

Bar Admissions

  • New Jersey
  • New York