The UCL forbids "unlawful, unfair or fraudulent" conduct in connection with virtually any type of business activity. Unfair competition shall mean and include any unlawful, unfair or fraudulent business act or practice and unfair, deceptive, untrue or misleading advertising.Section 17200, also known as California's Unfair Competition Law ("UCL") prohibits any unlawful, unfair or fraudulent business act or practice. Consumer class actions must surmount the considerable class certification and notice barriers — and in the context of uncertain attorney's fees; moreover, fees. 4 The CLRA, which explicitly prohibits 24 separate business acts and practices, provides for streamlined class certification and dispositive motion proceedings. The Unfair Competition Law of California prohibits false advertising and illegal business practices. The law is also known as the state's UCL. California's Unfair Competition Law, or UCL, protects consumers from any "unfair, unlawful, or fraudulent business act or practice. This checklist is for cases involving a cause of action for violation of the Unfair Competition Law (UCL) (Bus. An unfair business practice is one that has the tendency to deceive the public.