Marc Greenwald is a trial lawyer, founding member of Quinn Emanuel's New York office and the partner in charge of the New York Pro Bono Practice. Mr. Greenwald has tried cases in both federal and state courts, and has handled cases in many jurisdictions throughout the country. Mr. Greenwald has also arbitrated cases in front of AAA, JAMS, the ICC, and FINRA. Mr. Greenwald has also argued significant appeals in the Second Circuit, Fourth Circuit and New York’s Appellate Division. Mr. Greenwald has been recognized by Legal 500, Lawdragon 500, and SuperLawyers and has received awards from the Department of Justice and the American Antitrust Institute.
Mr. Greenwald formerly served as a Co-Chair of the firm’s Government Enforcement practice. Mr. Greenwald appointed by the judges of the Southern District of New York to serve on that court’s Criminal Justice Act Panel.
Mr. Greenwald’s clients include investment funds, tech companies, large corporations, start-ups and individuals. He has handled significant cases in many areas of practice, including software licensing, copyright, trademark, trade secret, antitrust, bankruptcy, financial fraud, contractual disputes and employee movement. In 2018, Mr. Greenwald was awarded Outstanding Antitrust Litigation Achievement by the American Antitrust Institute.
Prior to joining Quinn Emanuel, Mr. Greenwald was an Assistant United States Attorney in the Southern District of New York, where he conducted a dozen jury trials and argued seven appeals in the Second Circuit. Mr. Greenwald earned the Department of Justice Director’s Award for Superior Performance as an AUSA. Before serving as a federal prosecutor, Mr. Greenwald was a policy advisor at the U.S. Treasury Department and a law clerk to Ninth Circuit Judge David R. Thompson. Mr. Greenwald, who has a Masters Degree in History, also worked as a high school teacher at a New York City public school.
Investment Fund Disputes
- Represented biotech-focused fund in a dispute with one of two co-founders.
- Represent large fund in dispute over aircraft-engine leases
- Represent oil and gas focused fund in a series of disputes related to trust royalties.
- Represented real estate fund in activist battle with commercial REIT.
- Represented hedge fund in a short-seller securities dispute.
- Represented liquidators of a large hedge fund in litigation over swaps contracts.
Intellectual Property Litigation
- Represent large enterprise software company in multiple licensing disputes.
- Represent major AI company in trademark litigation.
- Represented Virgin Group in trade secret matter regarding Virgin Cruises.
- Represented Google and Twitter in Second Circuit in matter involving application of the “hot news misappropriation” doctrine.
- Represented Mattel against copyright and related claims against its UNO product line.
Government Enforcement
- Represented CEO of Luxembourg investment firm in investigation by the U.S. Department of Justice and U.K. Financial Conduct Authority.
- Represented labor union in federal investigation of political fundraising.
- Represented Switzerland-based Chartwell Asset Management in SEC Insider Trading case. In February 2012, after pursuing months of discovery, the SEC dismissed its claims against Chartwell.
- Represented Italian caviar importer Isidoro Garbarino in notable Customs prosecution in SDNY. Obtained sentence of time served for Mr. Garbarino even though he had been a fugitive for more than 20 years.
- Represented European investor in SEC investigation of alleged market manipulation in U.S. listed securities. The SEC took no action against our client.
Antitrust and Class Action Litigation
- Served as one of the principal lawyers for the class in the ISDAfix Antitrust Litigation
- Represented E*TRADE in a contract class action related to indicative rates for borrowed securities in short sales.
- Represent large corporations in antitrust claims against Visa and MasterCard.
Commercial, Securities and Financial Litigation
- Represented European Satellite Manufacturer in dispute with a satellite and defense financing company.
- Represented Amplifi Live related to financing for Woodstock 50 music festival.
- Represented trustee of Parmalat S.p.A. in lawsuits arising out of the largest bankruptcy in European history against various financial institutions and accounting firms.
Employee Movement
- Represented large group of tech investment bankers who left UBS for a boutique firm.
- Represented large group of investment advisors who left Smith Barney for a boutique firm.
- Investigations, Government Enforcement & White Collar Criminal Defense Practice
- Lender Liability & Other Banking Financial Institution Litigation
- Investment Fund Litigation
- Copyright Litigation
- Hedge Fund Litigation
- Private Equity Fund Litigation
- Appellate Practice
- Securities Litigation
- Shareholder Activist Litigation
- Corporate Governance Litigation
- Accounting & Financial Reporting Litigation
- State Attorney General Litigation
- New York University School of Law
(J.D., magna cum laude, and simultaneous M.A. in History, 1994)- New York University Law Review:
- Competitions Editor
- New York University Law Review:
- University of Pennsylvania
(B.A., cum laude, 1989)
- The State Bar of California
- The State Bar of District of Columbia
- The State Bar of New York
- Supreme Court of the United States
- United States Court of Appeals:
- Second Circuit
- United States District Court:
- Eastern District of New York
- Southern District of New York
- Central District of California
- Northern District of California
- United States Attorney's Office, Southern District of New York:
- Assistant United States Attorney, 1997-2001
- Recipient of Director's Award for Superior Performance, 2000
- United States Department of the Treasury:
- Policy Advisor to the Under Secretary (Enforcement), 1995-1996
- Policy Advisor to the Under Secretary (Enforcement), 1995-1996
- Law Clerk to the Hon. David Thompson:
- United States Court of Appeals for the Ninth Circuit, 1994-1995
- United States Court of Appeals for the Ninth Circuit, 1994-1995
- A. Philip Randolph Campus High School:
- Social Studies Teacher, 1989-1991
- Legal 500, Dispute Resolution: International Arbitration, 2024
- Lawdragon 500 - Leading Litigators in America, Financial Fraud, Government Enforcement, 2023-2025
- Super Lawyers White Collar Crime New York, 2011, 2013-2019
- American Antitrust Institute, Antitrust Enforcement Award, 2018
Greenwald, Marc and Robert Juman. “Beware of Liability for Web Site Postings.” New York Law Journal, February 4, 2002.
Greenwald, Marc and Emily Costello. “Scope of Reporters’ Privilege in the Second Circuit.” New York Law Journal, March 10, 2005.
Greenwald, Marc and Emily Costello. “Intersection of Trade Secret Protection, Reporter’s Privilege in N.Y.” New York Law Journal, July 5, 2005.
Greenwald, Marc and James Meehan. “Still in Its Infancy, the Due Process Protections Act Begins to Show Promise.” New York Law Journal, February 2, 2021
Greenwald, Marc and Phillip Jobe. “Congress Should Amend The Jencks Act Now.” New York Law Journal, February 2, 2022.
Greenwald, Marc and Leigha Empson. “Congress Should Amend the Diversity Statute to Address LLCs.” New York Law Journal, November 30, 2023.
Greenwald, Marc and Vicki Parker. “Ninth Circuit Weighs In on Copyrights of Computer Programs and Comparative Advertising Under the Lanham Act.” The Recorder, March 6, 2025
New York Council of Defense Lawyers:
Board of Trustees, 2014-2016
Co-Chair of the Amicus Committee, 2012-2015
Federal Bar Council:
Public Service Committee, 2013-Present
Chair, Sub-Committee on Felon Re-entry, 2018-Present
American Jewish World Service:
Board of Trustees, 2012-Present
Lawyers Division of UJA-Federation:
Executive Committee, 2012-Present
New York City Bar:
Federal Courts Committee, 2002-2005