A federal judge in Virginia has rejected the U.S. Justice Department’s push to break up Google’s advertising technology business, opting instead to impose a package of behavioral restrictions designed to undo the competitive harm caused by what the court had previously ruled was Google’s illegal monopolization of key digital ad markets.
U.S. District Court Judge Leonie Brinkema delivered the ruling in the long-running antitrust case brought by the Justice Department and a coalition of state attorneys general. The decision concludes the remedies phase of the litigation following the court’s 2024 finding that Google unlawfully monopolized segments of the ad tech stack — the interconnected set of tools publishers and advertisers use to buy, sell, and place digital ads.
Brinkema said she would adopt most of the behavioral remedies proposed jointly by the plaintiffs and Google, with modifications she determined were necessary to address the harm caused by Google’s conduct. The court stopped short of the more aggressive structural separation the Justice Department had pursued, which would have forced Google to divest its ad exchange and publisher ad server operations.
What happened
The ruling follows a 2024 bench trial in which the Justice Department argued that Google’s control over both sides of the digital advertising transaction — through tools used by publishers to sell ad space and tools used by advertisers and agencies to buy it — allowed the company to preferentially route transactions through its own exchange, lock out rival platforms, and entrench its dominance in violation of the Sherman Act.
After finding liability, the court turned to the question of remedies. The Justice Department asked for a forced breakup of Google’s ad tech businesses. Google countered with proposed behavioral restrictions, arguing that structural separation would harm the publishers and advertisers who depend on its tools.
Brinkema sided with neither position in full. She endorsed most of the behavioral remedies the parties had negotiated or proposed, but with court-imposed modifications aimed at strengthening their effect. According to legal analysis of the decision, the remedies are expected to include restrictions on Google’s ability to favor its own ad exchange within its publisher ad server, mandatory interoperability requirements giving rivals access to Google’s ad inventory on non-discriminatory terms, and limits on the exclusive dealing arrangements that the court had found anticompetitive.
The order leaves intact the core of Google’s advertising technology business, including the DoubleClick-era products that sit at the center of the market.
Why it matters
The decision represents the most consequential antitrust remedy imposed on a major U.S. technology company in more than a decade, even though it falls short of the structural separation that break-up advocates had called for. Ad tech is the connective tissue of the commercial internet, processing billions of ad transactions daily and shaping how revenue flows to publishers large and small. How Google is allowed to operate in that market has direct implications for news organizations, independent publishers, advertisers, and competing ad platforms.
For the Justice Department, the ruling is a significant partial defeat in a case it had hoped would deliver a landmark structural remedy. The agency’s antitrust leadership had publicly framed the case as a test of whether courts would be willing to dismantle a technology platform found to have illegally monopolized a market. Brinkema’s decision suggests that, at least in ad tech, courts may be more comfortable policing conduct than imposing breakups.
For Google, the outcome preserves a highly profitable line of business but imposes new operational constraints. The company has argued that the proposed restrictions would degrade its products, raise costs, and harm the very publishers the government sought to protect.
For rivals in ad tech, including independent exchanges, header bidding providers, and supply-side platforms, the remedies could open access to inventory and data that Google’s bundling had previously locked away — though the practical impact will depend on how the court supervises compliance.
Analysis: The decision reflects a recurring tension in U.S. antitrust law between structural and behavioral remedies. Structural breakups aim to remove the source of monopoly power permanently by separating contested assets. Behavioral remedies aim to restore competition by restricting the conduct that produced the harm, but require ongoing court supervision and often produce years of disputes over compliance. Courts have historically been wary of structural breakups, particularly against firms whose businesses they do not fully understand, and more comfortable with conduct remedies they can monitor.
In choosing behavioral remedies over divestiture, the court appears to have concluded that targeted restrictions on Google’s business practices could sufficiently address the harm without the disruption of dismantling parts of the company’s operations. Whether that conclusion holds will depend on enforcement. Behavioral remedies in technology cases have a mixed record, with critics arguing that dominant firms can erode their effect through new bundling tactics, contract redesigns, and technical friction imposed on rivals.
Background and context
The ad tech case traces back to a lawsuit filed by the Justice Department in January 2023, during the Biden administration, alleging that Google had unlawfully tied together its publisher ad server (DoubleClick for Publishers), its ad exchange (AdX), and its advertiser buying tools (Google Ads). A group of states — including California, New York, Texas, and Virginia — joined the case as co-plaintiffs.
In April 2024, after a bench trial, Judge Brinkema ruled that Google had illegally monopolized two markets in the ad tech stack: the publisher ad server market and the ad exchange market. The court found that Google had used its position to engage in “tie-in” conduct that forced publishers using its ad server to route transactions through Google’s exchange, and that the company had entered into exclusive agreements with major publishers and ad networks that locked out competitors.
The ruling made Google the second major technology company in two years to be found by a federal court to have maintained an illegal monopoly, following the 2023 decision in a separate case involving Google’s search business. That case, brought under a different theory, resulted in a separate remedies proceeding and a different judge.
In the ad tech litigation, the Justice Department filed proposed remedies that included the divestiture of Google’s publisher ad server and parts of its ad exchange business. Google proposed behavioral remedies and argued that divestiture would be disproportionate and would harm the open web. State plaintiffs largely aligned with the federal position.
The case drew intense interest from across the digital advertising ecosystem, with publishers, broadcasters, and competing ad tech firms filing amicus briefs supporting structural relief, while Google’s own customers offered mixed views.
What to watch next
The Justice Department is widely expected to appeal the remedies decision. An appeal would go to the U.S. Court of Appeals for the Fourth Circuit and could take years to resolve. The Justice Department could also seek a stay of the remedies pending appeal.
The court will need to enter a final judgment specifying the exact terms of the behavioral remedies. Industry participants will be watching closely for the precise scope of interoperability requirements, the duration of the remedies, and the role of a court-appointed monitor or special master in overseeing compliance.
Google is expected to continue litigating the terms of the remedies and to argue for narrowing modifications. The company has signaled throughout the case that it views any remedy short of dismissal as harmful to its products and customers.
Separately, the ad tech ruling comes against the backdrop of the parallel search monopolization case, in which a different federal judge is weighing remedies of her own. Together, the two cases will shape how U.S. courts approach enforcement against large technology platforms for years to come, and whether structural separation remains a viable remedy in future antitrust actions.
Conclusion
Judge Brinkema’s decision leaves Google intact as a company but curtails how it can operate in the ad technology markets it was found to have monopolized. For the Justice Department, the ruling is a partial victory on liability and a partial loss on remedies. For publishers, advertisers, and rival ad tech firms, the practical question now is whether the behavioral restrictions will meaningfully reopen markets that Google’s bundling had closed. That answer will emerge slowly, through implementation, compliance disputes, and whatever appeals follow.
Sources:
The Verge — https://www.theverge.com/policy/988316/google-ad-tech-antitrust-remedies-decision
Source: The Verge
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Story synopsis gathered from: The Verge — source
