Two federal courts have found that Google violated the antitrust laws, and advertisers harmed by
that conduct have a private right to seek damages under Section 4 of the Clayton Act. Yet when
businesses search for a Google Ads class action to join, they find that none exists. The
explanation lies in Google’s terms of service, which mandate individual arbitration and prohibit
class actions for most advertisers. Understanding how this framework operates, and why it need
not disadvantage claimants, requires examining the interplay between contract law, antitrust
remedies, and recent court decisions that have clarified the path forward for those seeking a
Google Ads refund.
The Private Right of Action Under Federal Antitrust Law
Federal antitrust enforcement operates on two parallel tracks that serve different purposes. When
the Department of Justice prosecutes violations, it seeks forward-looking remedies designed to
restore competition, including divestitures, injunctions, and behavioral restrictions. These
remedies restructure markets and deter future misconduct, but they do not compensate the
businesses that suffered harm while the anticompetitive conduct was occurring.
Compensation for victims comes through a separate mechanism that Congress established
precisely for this purpose. Section 4 of the Clayton Act provides that any person injured by an
antitrust violation may sue and recover threefold the damages sustained, plus the cost of suit
including reasonable attorney fees. This private right of action supplements government
enforcement by allowing those who were harmed to pursue their own recovery. The government
restores competition going forward, while private plaintiffs recover losses they have already
incurred.
The two DOJ victories in the Google Ads monopoly case, one addressing search advertising and
one addressing the advertising technology stack, establish liability for antitrust violations. They
do not, however, provide a financial recovery to individual advertisers. For businesses seeking a
Google Ads overcharge refund or digital advertising refund, the Clayton Act private right of
action provides the path to recovery. The federal court findings establish that Google violated the
law. Obtaining compensation requires advertisers to pursue their own claims, and for most, that
means proceeding through arbitration.
Why There Is No Google Ads Class Action
In September 2017, Google amended its advertising terms of service to include a mandatory
arbitration provision coupled with a class action waiver. Advertisers who created new accounts
or continued using existing accounts after that date agreed to resolve disputes through individual
arbitration rather than through collective litigation in court. Google provided notice of these
changes through emails, blog posts, and prominent alerts within advertiser dashboards, along with a thirty-day window during which advertisers could opt out of the arbitration requirement. The vast majority did not exercise that option.
Federal courts have consistently found these provisions enforceable. In January 2025, the
Southern District of New York compelled two advertisers to proceed through individual
arbitration, rejecting challenges based on unconscionability, inadequate notice, and procedural
defects. The ruling confirmed what years of precedent under the Federal Arbitration Act had
already established. Arbitration agreements in commercial contracts are generally enforceable,
even when they appear in standardized terms that the agreeing party has no practical ability to
negotiate.
The consequence for advertisers is that a traditional Google Ads class action is not available as a
vehicle for recovery, nor is any other form of collective action in federal court. For those who
wish to pursue a Google advertiser refund based on the antitrust violations found by the federal
courts, individual Google Ads arbitration administered by the American Arbitration Association
is the contractually mandated forum.
Why Arbitration Does Not Limit Antitrust Remedies
A threshold concern for many potential claimants is whether pursuing claims through arbitration
rather than federal court will limit the remedies available to them. The answer, grounded in
decades of Supreme Court precedent, is that it will not.
The Supreme Court has held consistently that arbitration is a matter of procedure rather than
substance. Parties may agree to resolve their disputes before a private arbitrator rather than a
federal judge, but they cannot use an arbitration agreement to eliminate the substantive legal
rights that would otherwise govern those disputes. An arbitration clause determines forum,
meaning where and before whom a dispute will be heard. It does not alter the law that the
decision-maker must apply or the remedies that the law makes available.
For antitrust claims, the relevant substantive rights derive from Section 4 of the Clayton Act.
That provision mandates that successful plaintiffs recover three times their actual damages, plus
the costs of bringing suit, including reasonable attorney fees. These remedies are not
discretionary and cannot be waived by contract. An arbitrator adjudicating an antitrust claim is
bound to apply the same legal standards and award the same remedies that a federal court would
award in litigation.
The Federal Arbitration Act reflects a policy favoring arbitration as a forum for dispute
resolution, but it does not authorize arbitration agreements to function as waivers of substantive
statutory rights that Congress made mandatory. Google Ads advertiser rights under the federal
antitrust laws, including the right to seek treble damages, remain fully intact regardless of
whether claims proceed in court or before an arbitrator.
Disclaimer: This guide provides an educational analysis of issues relating to potential arbitration claims by advertisers against Google following the April 2025 federal court decision. It does not constitute legal advice. Companies should consult with qualified counsel to evaluate their specific circumstances and potential claims. Any estimated recovery amount or percentage is an estimate and not a guarantee. A case can settle for a much lower percentage or result in no recovery.