David Gringer is an accomplished trial lawyer with demonstrated success in complex antitrust and false advertising litigation. In the antitrust space, Mr. Gringer is one of the very few attorneys to have successfully tried cases under section 7 of the Clayton Act for both plaintiffs and defendants, and has recently prevailed at trial in different cases brought by the Attorneys General of 16 different states; he has also successfully secured victories at the Motion to Dismiss stage in several cases brought under Sections 1 and 2 of the Sherman Act. In false advertising and consumer protection cases, Mr. Gringer takes high-profile cases to trial throughout the country with deep experience litigating against the government, putative class plaintiffs and in mass arbitrations.

In 2022, Mr. Gringer was named a “rising star” by the New York Law Journal as someone “in a leadership role who achieved impressive results,” and in 2020, Law360 named him a “rising star” on their global list for his experience with “massive cases on both sides of the courtroom.” He has been recognized as a Litigation Daily Litigator of the Week runner-up twice. Once for a significant antitrust victory on a motion to dismiss and another for his defeat of a request for preliminary injunction.

At the DOJ, Mr. Gringer played a leading role in many of the Antitrust Division's highest-profile matters, including serving as a member of the division's winning trial teams in U.S. v. H&R Block—the division's first successful challenge to a merger in more than eight years—the e-books price-fixing litigation, and writing the division's litigation complaints in U.S. v. Anheuser-Busch and U.S. v. U.S. Airways.

In 2013, Mr. Gringer was selected for an individual Assistant Attorney General Award of Distinction for his work on U.S. v. H&R Block, U.S. v. BlueCross Blue Shield of Michigan, and the proposed and later abandoned 3M/Avery merger, among others.

David has also successfully represented clients at trial in false advertising litigation and mass arbitrations against State Attorneys General, claimants and private class plaintiffs; and in investigations by multistate groups of Attorneys General and the Bureau of Consumer Protection at the FTC. He also routinely advises clients on compliance with state and federal UDAP laws, bringing a trial lawyer’s perspective to these questions.

Before joining the DOJ, Mr. Gringer served as a law clerk to the Honorable Michael Boudin of the US Court of Appeals for the First Circuit. He also has substantial political campaign management experience. In 2005, he was campaign manager for the successful Manhattan Borough president campaign of Scott Stringer, who now serves as New York City comptroller.