Federal judge rejects government demand to break up Google’s ad technology business

# Google Wins Major Antitrust Victory as Judge Rejects AdX Sale

Google has secured a significant victory in its long-running digital advertising antitrust case after a federal judge rejected the U.S. Department of Justice’s demand that the company sell its central advertising exchange, AdX.

U.S. District Judge Leonie Brinkema instead ordered behavioral remedies requiring Google to change how its advertising technology interacts with competing platforms.

The ruling concludes the penalty phase of a lawsuit first filed in 2023.

In April 2025, Brinkema found that Google had unlawfully maintained monopolies in publisher ad servers and ad exchanges. The court also determined that Google had improperly tied its publisher tools to AdX in ways that restricted competition.

During the remedies trial, Justice Department lawyers argued that selling AdX was necessary to eliminate conflicts of interest within Google’s advertising technology business.

The government maintained that structural separation was the most effective way to prevent Google from favoring its own services and limiting rival platforms.

Google opposed the proposed breakup, warning that a forced sale could disrupt the digital advertising system, harm web publishers and create difficulties for small businesses that depend on its tools.

Brinkema ultimately chose conduct-based restrictions rather than a corporate separation.

The exact details of the remedies remain under seal for 14 days while both sides seek redactions to protect confidential trade secrets.

However, the measures are expected to improve interoperability across the digital advertising market.

One proposed change would give rival ad servers and platforms access to real-time bidding opportunities on AdX.

The requirements could make it easier for competing companies to participate in Google’s advertising marketplace and reduce the advantages enjoyed by Google’s own services.

Google welcomed the decision, saying it was pleased the court rejected proposals that could have dismantled tools used by small businesses.

The Justice Department said it was satisfied that the court had ordered operational changes, while indicating that officials would consider their legal options after the full opinion is released.

The ruling represents another setback for federal regulators seeking to break up major technology companies through structural remedies.

In a separate case last year, a federal judge in Washington found Google liable for maintaining an illegal search monopoly but declined to order the sale of Chrome or Android.

The latest decision does not eliminate the legal restrictions facing Google, but it allows the company to retain control of AdX while requiring changes to its business practices.

The outcome could influence future antitrust cases involving large technology platforms, particularly when regulators seek to separate major business units rather than impose limits on corporate conduct.

For Google, the ruling preserves a central part of its advertising business while placing greater pressure on the company to operate its ad technology systems in a more open and competitive manner.