US-CaliforniaWhat is the Unfair Competition Law and who can sue under it?
California’s Unfair Competition Law (UCL) prohibits unlawful, unfair, or fraudulent business practices. Private plaintiffs, the Attorney General, district attorneys, and city attorneys can sue — but private plaintiffs must meet standing requirements, including suffering injury in fact and losing money or property.
What the Law Says
The Unfair Competition Law (UCL) is a powerful California statute that broadly prohibits 'any unlawful, unfair or fraudulent act or practice' in business. It empowers both public enforcers and qualified private citizens to stop harmful conduct — though remedies are limited.
The UCL is codified in California Business and Professions Code section 17200 et seq. It defines 'unfair competition' to include any act that is unlawful, unfair, or fraudulent — making it one of the broadest consumer protection tools in the state.
To sue under the UCL, a private plaintiff must have 'suffered injury in fact' and 'lost money or property as a result of' the unfair practice — a requirement established by Proposition 64 in 2004 and codified in section 17204.
The law allows lawsuits for injunctive relief and restitution, but explicitly bars private plaintiffs from recovering statutory or punitive damages. Public prosecutors (like the Attorney General or district attorneys) may seek broader remedies, including civil penalties.
Statutory TextUnfair competition shall mean and include any unlawful, unfair or fraudulent act or practice and unfair, deceptive, untrue or misleading advertising.
— Bus. & Prof. Code § 17200 — Unfair competition defined
Statutory TextA private person may maintain an action for relief pursuant to this chapter if the person has suffered injury in fact and has lost money or property as a result of the unfair competition.
— Bus. & Prof. Code § 17204 — Standing to sue
What to Do
Determine if the conduct falls under 'unlawful, unfair, or fraudulent' per Bus. & Prof. Code § 17200.
Confirm you meet standing: you suffered injury in fact and lost money or property due to the conduct.
File within 4 years of when the claim accrued — the UCL’s statute of limitations (Code Civ. Proc. § 343).
Consider whether to file individually or as part of a class action — class certification requires meeting additional legal standards.
Consult an attorney: UCL cases often involve complex pleading, discovery, and remedies like restitution or injunctions.
Sources
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US-New YorkNot legal advice. This article is general information based on publicly available sources, written for educational purposes. Laws change and individual situations vary. Consult a licensed attorney in your jurisdiction before acting on anything you read here. Last reviewed: 2026-06-08.