Google’s Advertising Monopoly on Trial: U.S. Antitrust Remedies Hearing Set for September
The next phase in the U.S. government’s high-stakes antitrust battle against Google is officially on the calendar. A federal judge has scheduled the remedies trial—focused on how to potentially break up or restrict Google’s advertising tech dominance—for September 22, 2025.
This move follows a pivotal ruling last month in which U.S. District Judge Leonie Brinkema, based in Alexandria, Virginia, found that Google had “willfully acquired and maintained monopoly power” in the digital advertising market. The upcoming trial will now determine what consequences or structural changes the tech giant could face.
What’s This Trial About?
This isn’t just another court date—it’s about whether Google may have to restructure its massive ad tech empire.
The U.S. Department of Justice (DOJ), along with several state attorneys general, has accused Google of illegally monopolizing key parts of the digital advertising pipeline. From tools that help publishers sell ad space to the platform advertisers use to buy it, Google allegedly controls too much of the process, making it difficult for rivals to compete fairly.
Now that a judge has ruled in favor of the government on the core issue of monopoly abuse, the upcoming remedies trial will explore potential solutions—including the divestiture of parts of Google’s advertising business.
Judge Brinkema: Google Abused Its Power
Judge Brinkema’s ruling in April marked a major victory for U.S. regulators. She concluded that Google had used its dominant position to suppress competition and entrench its monopoly, particularly in the digital ads ecosystem, which generates hundreds of billions of dollars in revenue globally each year.
That finding opened the door to one of the most consequential phases of an antitrust case: what to do next.
The remedies trial will likely include:
- Testimony from industry competitors and economic experts
- Proposals from both sides on how to restore market competition
- Potential government calls to force Google to sell off parts of its ad tech stack
Why This Matters: Big Tech’s Business Model Is Under Fire
Google’s advertising business is a core pillar of its revenue model, accounting for a huge portion of parent company Alphabet’s $300+ billion in annual revenue. If regulators succeed in forcing a breakup or fundamental restructuring, it would mark one of the most significant antitrust actions in modern tech history.
The case also serves as a litmus test for how the U.S. plans to handle growing concerns over Big Tech monopolies, following similar actions in the EU and rising scrutiny from lawmakers across the political spectrum.
This trial could ultimately shape:
- How online ads are bought and sold
- Which companies can compete in the digital marketing space
- The future regulation of digital platforms that dominate global markets
What Could Happen to Google?
While it’s too early to predict the exact outcome, several remedy options could be on the table:
- Structural separation – Forcing Google to spin off parts of its ad tech business, such as its ad exchange or ad server technology.
- Behavioral restrictions – Imposing limits on how Google integrates its services or uses data to favor its own platforms.
- Third-party oversight – Introducing regulators or monitors to ensure compliance and transparency in the ad ecosystem.
Google, for its part, is expected to vigorously defend its business practices, arguing that its technology lowers costs, increases efficiency, and benefits consumers. It will also likely appeal any drastic ruling—setting up a potentially lengthy legal battle.
The Bigger Picture: A New Era for Tech Regulation?
This case is just one of several high-profile government actions targeting tech giants:
- The DOJ is separately suing Apple over alleged monopolistic practices related to the iPhone ecosystem.
- The FTC has active cases against Meta and Amazon.
- The European Union is implementing the Digital Markets Act, forcing tech companies to play by new competition rules.
With public and political pressure mounting, U.S. regulators are more aggressive than ever in reining in tech power. The outcome of the Google ad tech trial could set a new precedent—not just for how antitrust law is applied in the digital age, but also for how governments worldwide approach Big Tech.
What’s Next?
The remedies trial begins September 22, and it will be watched closely by:
- Investors, wary of the financial impact on Google and Alphabet
- Competitors, hoping for a more level playing field
- Policymakers, crafting future regulations based on the case’s outcome
- Consumers, whose online experience may change depending on the results
For now, all eyes are on the courtroom in Virginia, where the future of one of the world’s most powerful companies—and the rules governing the internet economy—may soon be rewritten.
