Gregory Silbert


Gregory Silbert

Greg Silbert is a partner in the Firm’s Appellate practice group. He has extensive experience litigating in both federal and state appellate courts. He has argued dozens of appeals and briefed many more, successfully representing clients in courts of last resort and intermediate appellate courts.

His recent experience includes:

  • Representing Vivendi in one of the few securities fraud class actions to be tried to judgment. Most recently, in the post-judgment phase of the case, defeated more than $70 million of claims on summary judgment by showing that the investment advisers who were responsible for a majority of the purchases during the class period understood the allegedly concealed risks.
  • Represented Marvel Characters in a successful Second Circuit appeal concerning copyright ownership of the Marvel superheroes.
  • Submitted an amicus brief to the Supreme Court on behalf of the European Union in a case involving the construction of international law.
  • Represented Vivendi S.A. as amicus in the Supreme Court in a case examining the presumption of reliance in securities fraud class actions.
  • Represented the National Restaurant Association in a successful constitutional challenge to New York City’s “soda ban,” which prohibited certain establishments from selling sugar-sweetened drinks in containers that hold more than 16 ounces.
  • Represented Simon & Schuster in an appeal challenging modifications to a consent decree concerning the sale of e-books.
  • Successfully appealed to the United States Supreme Court on behalf of Schindler Elevator Corporation, winning an important victory for the company in a case that interpreted the public disclosure bar of the False Claims Act.
  • Briefed and argued an appeal on behalf of UnitedHealth Group that led to one of the first appellate decisions under New York State's False Claims Act, and which resulted in the complete dismissal of a complaint asserting hundreds of millions of dollars in damages.
  • Represented the Port Authority of New York and New Jersey in a high-profile appeal to the Court of Appeals of the State of New York that led to the reversal of an intermediate appellate court’s decision finding the Port Authority liable for damages caused by the 1993 terrorist attack at New York’s World Trade Center.
  • Secured a victory for CBS and several current and former executives before the Second Circuit, which affirmed a district court order granting the defendants’ motion to dismiss a federal securities fraud class action that arose out of CBS’s disclosure of a $14 impairment charge in 2008. In its ruling, the Second Circuit expanded the application of its 2011 ruling in Fait v. Regions Fin. Corp. to claims concerning goodwill brought under Sections 10(b) and 20(a) of the Securities Exchange Act of 1934.

Additional clients for which he has litigated appeals include Avaya, Dow Chemical, eBay, Farmers Insurance, General Electric, Lehman Brothers, L’Oreal, Morgan Stanley, Nuance Communications, S&P Dow Jones Indices, Sotheby’s, Tyco, and The Walt Disney Company, among others.

Mr. Silbert is widely recognized for his expertise in appellate advocacy. From 2010 to 2011, he served on California Attorney General Kamala Harris' transition committee, advising on issues relating to appellate litigation. Since 2013, he has been recognized by The Legal 500 US as a “Recommended” lawyer for Supreme Court and Appellate. He has also been recognized for his work in the Appellate space by New York Super Lawyers.

Mr. Silbert maintains an active pro bono practice, providing legal assistance to organizations such as the Asian American Legal Defense and Education Fund, Center for Constitutional Rights, Citizens Union of the City of New York, the Innocence Project, the Legal Aid Society, Muslim Advocates, the National Association of Criminal Defense Lawyers, and New York Lawyers for the Public Interest, among others. He serves on the board of directors of Citizens Union and of the Delancey Street Foundation.

Mr. Silbert clerked for two federal appellate judges: David S. Tatel, of the US Court of Appeals for the DC Circuit, and Marsha S. Berzon, of the US Court of Appeals for the Ninth Circuit. He graduated from Yale Law School in 1999, where he was Symposium Editor of the Yale Law Journal. He joined Weil in 2007, after serving as Assistant Solicitor General of the State of New York.

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