Gov or call 800.952.5210. The Uniform Deceptive Trade Practices Act, or UDTPA, is the federal law that addresses deceptive actions.California prohibits false advertising. It's illegal to take part in deceptive, false, and misleading advertising. It covers almost all the prohibitions and issues addressed in state laws. California has not adopted the Uniform Deceptive Trade Practices Act. The experienced Los Angeles unfair business practices attorneys at Boyd Law can help stop and prevent antitrust violations and other unfair business conduct. Complaints help the FTC and other law enforcement agencies bring scam artists to justice and put an end to unfair and misleading business practices. California's Unfair Competition Law, or UCL, protects consumers from any "unfair, unlawful, or fraudulent business act or practice. California also prohibits false advertising.