U.S. District Judge Leonie Brinkema rejected the Justice Department’s request for Google to sell off parts of its advertising technology business. Instead, she approved narrower behavioral remedies aimed at restoring competition in markets the company had illegally monopolized for years. Details of the remedies will not be disclosed until the parties discuss further changes and redact confidential information from the ruling. Possible measures include limiting Google’s favoring of its own services in ad auctions and allowing third-party advertising technology tools to access the same real-time information as Google.
The court ruled that Google had illegally monopolized the publisher ad server market, where publishers manage advertising space on their websites, and the ad exchange market, which operates the auctions where that space is sold. The judge concluded that Google had linked Doubleclick for Publishers (DFP) and AdX in an anticompetitive manner, making it nearly impossible for customers to switch to competing services and weakening competition. However, the Justice Department failed to prove that there was also an illegal monopoly in the market for advertiser-side tools.
Google has the option to appeal. Through Lee-Anne Mulholland, the company’s vice president of regulatory affairs, it said it was pleased that the breakup of tools that help small businesses reach new customers had been rejected. The Justice Department, meanwhile, said that “significant relief” had been ordered and that it was evaluating its next steps. The ruling completed the district court phase of the third major technology monopoly case brought by the federal government in recent years.
Why it matters
The ruling shows that the toughest structural intervention against Google’s dominance in advertising technology was not imposed, with measures aimed at restricting the company’s operations taking precedence instead. This approach raises the question of whether third-party services can compete on an equal footing with the information held by the company, particularly for publishers and parties that use Google’s tools in advertising auctions. The court’s decision that there was no evidence of a monopoly in the market for advertiser-side tools limits the scope of the remedies to Google’s publisher ad server and ad exchange operations. Because the details have not yet been disclosed, it remains unclear how broad the behavioral remedies expected to restore competition will be in practice and whether Google will appeal.
Background
Google is not a new name in the FikirPilot archive: over the past 90 days, we have published 25 articles mentioning the name; the latest is dated September 6, 2026.