Archive · 27 Sep 2025
DOJ Seeks to Curb Google's Ad Dominance in Court
The U.S. government is trying to make Google change how it sells online ads.
Google runs an ad exchange, where companies buy and sell ad space.
The government says Google has too much control and is asking a judge to make Google sell off its ad exchange.
They also want Google to make it easier for other companies to compete and for advertisers to see how ads are sold.
Google says this will be difficult and hurt its business, arguing that it has been working to make the system better since 2020.
The DOJ wants Google to sell its advertising exchange, AdX, and alter how it does business.
The DOJ argues Google illegally monopolized ad exchange and ad-selling technology.
Google says the government's requests are radical and could damage the technology.
The DOJ also wants Google to give publishers more control over their data and auction processes.
Both sides are presenting expert witnesses and legal arguments in court.
- Who
- The Justice Department (DOJ) and Google
- What
- The DOJ is seeking to force Google to sell part of its business and change its ad practices.
- When
- The trial is ongoing, with the DOJ presenting its case and Google preparing its defense.
- Where
- Federal Court in Virginia.
- Why
- To increase competition in the online display advertising market.
Justice Department
AdX Divestiture
Justice Department
Selling AdX is the single most important way to restore trust for ad buyers.
Divestiture is 'naive, vague, and incoherent,' putting Google at a disadvantage.
Auction Transparency
Justice Department
Making final auction logic public would benefit advertisers and publishers.
Making auction logic public increases the risk of cyberattacks and reveals the 'heart' of the ad server.
Google's Ad Buying Tools
Justice Department
Google's ad buying tools favor its own products, creating a monopolistic issue.
Making Google Ads behave differently would put the company at a competitive disadvantage.
- Company
- Google (Alphabet Inc.)
- Legal Venue
- Federal Court in Virginia
- Judge
- Leonie Brinkema
- DOJ's Primary Request
- Divestiture of AdX (Google's ad exchange)
- AdX Market Share
- ~56%
- DOJ Claim
- Google illegally monopolized the ad exchange and ad-selling technology markets