US v. Google (Search): Structural Regulatory

The US government’s flagship antitrust case of the internet era: Google was held to have illegally maintained its search monopoly through default agreements, and the fight has moved to remedies and appeals that will shape search, browsers and AI distribution.

LATEST DEVELOPMENT · JUL 28, 2026

On July 28, 2026, the DOJ and plaintiff states filed their 144-page response and cross-appeal brief at the D.C. Circuit, urging the court to affirm Judge Mehta’s liability finding and the data-sharing remedies while asking it to vacate the denial of a ban on Google’s payments to distributors like Apple. Google’s reply brief is due September 29, 2026, and oral argument has not yet been scheduled for the 2026 term.

PREDICTED OUTCOME

AI-GENERATED · METHODOLOGY →

Claimant win ~52% likely HORIZON: D.C. Circuit ruling late 2027 to mid-2028 CONFIDENCE: MEDIUM

The most likely end state, at roughly 52%, is a D.C. Circuit judgment that affirms Mehta’s Section 2 liability finding and upholds the core of the December 2025 remedial decree, with the government’s cross-appeal for a ban on distribution payments rejected, probably decided between late 2027 and mid-2028 after argument in the spring or fall 2027 sittings. The strongest driver is the posture: the appellate record is a lengthy, fact-intensive liability opinion resting on exclusive default agreements, exactly the theory the same court blessed in Microsoft, and clear-error review of Mehta’s market-definition and foreclosure findings gives Google little room. The remedy also cuts toward affirmance because Mehta deliberately refused Chrome and Android divestiture and preserved Google’s right to pay for non-exclusive defaults, leaving a decree that looks proportionate rather than punitive and hard to attack as an abuse of discretion. Mehta’s May 2026 denial of a stay, coupled with the 45-day notice mechanism, means implementation and the Technical Committee will be embedded well before the panel rules, which further raises the cost of unwinding the judgment. Practically, Google keeps Chrome and keeps paying Apple something in the $20 billion-a-year range for non-exclusive placement, while search-index and user-interaction syndication to qualified rivals and AI entrants proceeds through the six-year term. The leading alternative, at about 30%, is a split in which liability is affirmed but the compelled data-sharing and syndication provisions are vacated or narrowed on remand under Trinko-style limits on forced dealing. A full Google win on liability is the tail at roughly 10%, and a negotiated consent modification with DOJ instead of a merits ruling sits near 5%, with a Supreme Court cert petition likely to follow whichever side loses.

Generated by claude-opus-5 on Aug 4, 2026, from this case’s record only. It stands until a major development changes the record. Not legal or investment advice. How predictions are made →

BACKGROUND

Filed in 2020, the case targeted the multibillion-dollar default agreements that made Google the out-of-the-box search engine on Apple devices, Android and major browsers. In August 2024, Judge Amit Mehta ruled that Google is a monopolist in general search and had violated Section 2 of the Sherman Act, the most significant US monopolization judgment since Microsoft.

The 2025 remedies decision stopped short of the government’s demand to divest Chrome, instead imposing data-sharing obligations and restrictions on exclusive default arrangements, with the rise of generative-AI search figuring heavily in the court’s reasoning. Appeals from both the liability and remedies rulings are proceeding, and parallel cases over Google’s ad-tech business continue separately.

TIMELINE

JUL 28, 2026FILING

DOJ and plaintiff states file response and cross-appeal brief at D.C. Circuit

The Justice Department and plaintiff states filed a 144-page brief urging the D.C. Circuit to affirm the liability finding and data-sharing remedies, and to vacate the district court’s refusal to ban Google’s payments to distributors such as Apple. Google’s reply brief is due September 29, 2026.

DOJ urges DC Circuit to beef up remedies in Google monopoly ruling ORAL ARGUMENT NOT YET SCHEDULED Nos. 26-5023, 26-5047, 26-5049
MAY 22, 2026APPEAL

Google files its opening appellate brief

The brief asks the D.C. Circuit to overturn both the monopolization holding and the remedies. Oral argument had not been scheduled as of mid-2026.
MAY 7, 2026PROCEDURAL

Partial stay pending appeal denied. Implementation proceeds

Judge Mehta denied Google’s stay motion without prejudice, requiring plaintiffs to give 45 days’ notice before any qualified competitor first receives data-sharing or syndication access so Google can renew its request.
JAN 16, 2026APPEAL

Google appeals to the D.C. Circuit. Government cross-appeals follow

Google noticed its appeal of the liability and remedies rulings (No. 26-5023). DOJ and the plaintiff states cross-appealed on 3 February 2026 seeking stronger remedies (Nos. 26-5047, 26-5049).
DEC 5, 2025JUDGMENT

Final judgment entered

The six-year judgment implements the remedies opinion and establishes a Technical Committee to oversee compliance.
SEP 2, 2025JUDGMENT

Remedies decision: data sharing ordered, Chrome divestiture rejected

Exclusive default contracts for Search, Chrome and Google’s AI products barred, and search-index/user-interaction data sharing and syndication ordered for qualified competitors, but Google may keep paying for non-exclusive defaults, and Chrome and Android divestiture was refused.
APR 21, 2025HEARING

Remedies trial opens

Plaintiffs sought divestiture of Chrome, data-sharing mandates and an end to default payments. Google proposed narrower limits on exclusivity.
AUG 5, 2024JUDGMENT

Court holds Google illegally maintained its search monopoly

Judge Mehta found Google violated Sherman Act §2 in the markets for general search services and general search text ads, chiefly through its exclusive default-distribution agreements.
SEP 12, 2023HEARING

Liability trial begins in Washington, D.C.
OCT 20, 2020FILING

DOJ and states sue Google over search monopolization