Advertisers launch mass arbitration

Advertisers that bought Google ads are starting a mass arbitration campaign that lawyers say could put billions of dollars in damage claims in front of the company. (claimsjournal.com) The first claims are expected to be filed this week, according to attorney Ashley Keller, who told Bloomberg he has already signed up a “significant number” of advertisers. He estimated potential claims tied to search and display ads at $218 billion or more, based on work by an economist hired by his firm. (claimsjournal.com) The cases are going to arbitration because Google’s advertiser contracts require legal disputes to be handled there instead of in court. In mass arbitration, 25 or more similar claims are pooled at once, a tactic that has been used more often in consumer and employment fights than in business-to-business claims. (claimsjournal.com) The new claims follow two major federal antitrust losses for Google. On August 5, 2024, Judge Amit Mehta in Washington found Google illegally maintained monopolies in general search services and general text advertising, and on April 17, 2025, Judge Leonie Brinkema in Virginia found Google liable for monopolizing key open-web advertising technology markets. (justice.gov 1) (justice.gov 2) The search case has already moved into remedies. On September 2, 2025, the Justice Department said the court barred Google from maintaining certain exclusive distribution contracts tied to Google Search, Chrome, Google Assistant, and the Gemini app, and ordered Google to share some search index and user-interaction data with rivals. (justice.gov) The ad-tech case centered on the software that helps websites sell ad space and helps advertisers bid for it in milliseconds. Colorado Attorney General Phil Weiser said the Virginia court found Google liable in the publisher ad server and ad exchange markets and said Google’s conduct let it charge higher fees and force advertisers to pay more for placement. (coag.gov) Some advertisers and publishers had already sued after the monopoly rulings, including USA Today Co. and Advance Publications, but arbitration clauses changed the path for many buyers. Bloomberg reported that Google disclosed in a recent corporate filing that it faces private damages claims tied to antitrust cases around the world and said it “cannot estimate a possible loss.” (claimsjournal.com) (sec.gov) Google said in that filing that it believes it has “strong arguments” and will defend itself “vigorously.” The company is appealing the 2024 search monopoly ruling, and Bloomberg reported it is expected to appeal the April 2025 ad-tech ruling as well. (sec.gov) (claimsjournal.com) The arbitration push could test whether findings won by government antitrust enforcers can be turned into large private payouts by the companies that bought ads through Google’s systems. Keller told Bloomberg similar mass arbitrations have taken 12 to 24 months from filing to resolution. (claimsjournal.com)