Advertisers planning mass arbitration

Advertisers are preparing coordinated arbitration claims against Google that could seek billions of dollars after two federal monopoly rulings. (bloomberg.com) Bloomberg reported on April 13 that lawyer Ashley Keller has signed up a “significant number” of advertisers and expects the first claims to be filed this week. Keller told Bloomberg his economist’s estimate puts potential claims tied to search and display ads at $218 billion or more. (bloomberg.com) Arbitration is a private dispute process that replaces a normal court case when a contract requires it. Google’s advertiser contracts include mandatory arbitration, and a New York federal judge ruled on January 27, 2025 that two advertisers who accepted those terms had to take their antitrust claims to arbitration. (mediapost.com) Mass arbitration means filing many similar claims at once instead of one class action. The American Arbitration Association defines it as 25 or more similar demands against the same party, and its 2024 data shows 92 mass arbitrations were filed that year. (insideclassactions.com, (adr.org)) The legal opening came from two antitrust losses for Google in federal court. On August 5, 2024, Judge Amit Mehta ruled that Google illegally maintained monopolies in general search and search text advertising, and on April 17, 2025, Judge Leonie Brinkema ruled that Google monopolized key open-web advertising technology markets. (congress.gov, (justice.gov)) Those rulings matter to advertisers because they can use them as the backbone for damages claims, arguing Google’s conduct inflated ad prices or distorted auctions. Bloomberg reported that companies that bought ads through Google, including USA Today Co. and Advance Publications Inc., have already sued for damages since the 2024 rulings. (bloomberg.com) Google has said it cannot yet estimate losses from private antitrust claims. In a recent corporate filing cited by Bloomberg, the company said it has “strong arguments” against the claims and will defend itself “vigorously,” while Google continues to appeal the search ruling and is expected to appeal the ad-technology ruling. (bloomberg.com), (justice.gov)) The arbitration campaign would test a tactic usually aimed at consumer or employment disputes in a fight between businesses. Bloomberg reported that Google’s case may be the first mass arbitration effort built around corporate plaintiffs, with similar proceedings often taking 12 to 24 months to resolve. (bloomberg.com))