Google filed a 111-page brief with the U.S. Court of Appeals for the DC Circuit on May 22, asking the court to reverse U.S. District Judge Amit Mehta’s ruling that the company illegally maintained a search monopoly, along with the data-sharing remedies Mehta ordered as a partial remedy.
The brief argues Mehta made a foundational antitrust error: treating Google’s agreements with Apple and Mozilla as exclusionary when, in Google’s framing, those deals were non-exclusive and both browser makers were free to distribute rival search engines. Google’s position, as reported by Courthouse News Service, is that its 80 percent U.S. query share by 2009 predated the contested conduct, and that the company earned that position through superior product quality rather than through foreclosure of competitors.
The data-sharing remedies are the practical center of this case for search practitioners. Mehta declined to order a divestiture of Chrome or Android in September 2024. Instead, he required Google to share its search index, user interaction data, and certain syndication services with rivals, on the theory that smaller engines could use those inputs to close the quality gap. Google’s appeal calls those remedies “ersatz competition,” arguing they would manufacture artificial parity rather than drive genuine innovation.
If the DC Circuit upholds the remedies, engines like Bing, DuckDuckGo, and any new entrant with a licensing agreement would gain access to interaction signals that currently compound Google’s quality advantage with every query. That would be the most consequential structural change to the search data ecosystem in at least two decades. If the court reverses, the competitive landscape stays intact and Google retains the full value of its behavioral data moat.
The brief introduces an AI-search argument worth watching. Google contends that OpenAI and similar generative AI companies cannot have been harmed by Google’s monopoly conduct because those companies did not exist when the conduct occurred. The argument is narrowly legal, but its strategic function is to draw a line between the era of blue-link search and the current AI-driven environment. Google is telling the court that AI-native competitors are “already succeeding as wildly as any technology in human history” without any need for remedy-mandated access to Google’s assets.
That framing sidesteps a substantive question: whether Google’s data advantage, accumulated through the conduct Mehta found unlawful, now gives Gemini and Google’s AI products a structural edge over OpenAI and Perplexity in the new generative search market. The brief does not address that question directly.
The procedural parallel Google draws is to United States v. Microsoft, where a breakup order was eventually vacated and replaced with a settlement. Google is clearly signaling it expects a similar outcome here: an appeals court that scales back the remedy even if it does not overturn the liability finding entirely.
The DOJ will submit its own appellate arguments in July. A five-member Technical Committee is currently overseeing interim compliance, and Google and the DOJ are actively disputing how much of competitors’ submitted data Google is entitled to access within that process.
For SEO practitioners, the near-term practical question is whether Mehta’s data-sharing order survives the appeal or is stayed pending review. A stay would freeze any competitive benefit smaller engines might extract from Google’s index and interaction data for the duration of the appellate process, which typically runs 12 to 24 months.
Teams at brands that depend heavily on Google Search for organic discovery should monitor whether the DC Circuit issues an administrative stay before briefing closes. A stay would signal that the appeals court views the remedies as potentially reversible, which would reduce near-term diversification urgency. No stay would keep the pressure on Google to comply and keep alive the possibility that rival engines gain meaningful quality improvements before the next algorithm cycle.
Reporting by Ryan Knappenberger for Courthouse News Service, published May 22, 2026.
