David Gringer is a nationally recognized trial lawyer with a distinguished record of success in antitrust, false advertising, and complex civil litigation. Mr. Gringer is known for his unique and powerful combination of aggressive advocacy, deep substantive knowledge, and strategic judgment. Clients and market commentators describe David to Chambers USA as “a go-to antitrust lawyer for difficult cases,” “a really strategic thinker,” and someone who “doesn’t back off.”
Drawing on his experience at the U.S. Department of Justice’s Antitrust Division, Mr. Gringer has prevailed on behalf of the firm’s clients in their most complicated and meaningful antitrust cases, with victories on numerous motions to dismiss, at class certification, summary judgment, and in several high-profile trials. Mr. Gringer is also one of the very few antitrust lawyers to have successfully tried cases to judgment for the government, private plaintiffs, and defendants, and is part of an even smaller group to have done so in both cases brought under Section 7 of the Clayton Act and Sections 1 and 2 of the Sherman Act. Recent or ongoing representations includeMeta, Google, Tesla, the University of Pennsylvania, Intuit, and Coinbase.
Mr. Gringer has also successfully represented clients at trial in false advertising and related litigation and mass arbitrations against State Attorneys General, claimants and private class plaintiffs; and in investigations by multistate groups of Attorneys General and the FTC’s Bureau of Consumer Protection. Here too, he is one of the few lawyers to have successfully taken cases against the government to trial, securing trial victories for firm clients in federal and state courts. He also routinely handles other complex civil cases, including those involving trade secrets, the Lanham Act, and other federal and state statutes.
Mr. Gringer previously was a “rising star” by the The New York Law Journal as someone “in a leadership role who achieved impressive results.” And 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 with accolades from Litigation Daily numerous times, including for a significant antitrust victory on a motion to dismiss, defeating class certification in what would have been the largest class action in U.S. history, and for his defeat of a request for preliminary injunction against the FTC.
Earlier in his career, Mr. Gringer served as a trial attorney at the U.S. Department of Justice Antitrust Division in many of the department’s highest-profile matters, including as a member of the division's winning trial teams in U.S. v. H&R Block—at the time 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 received an Assistant Attorney General Award of Distinction for his contributions on U.S. v. H&R Block, U.S. v. BlueCross Blue Shield of Michigan, and the proposed and the later abandoned 3M/Avery merger, among others.
Mr. Gringer began his legal career as a law clerk to the Honorable Michael Boudin of the US Court of Appeals for the First Circuit. Before practicing law, he worked in political campaign management.
Updated Oct 2025
