Section 17200 of the California Business and Professions Code includes five definitions of unfair competition: (1) an unlawful business act or practice; (2) an unfair business act or practice; (3) a fraudulent business act or practice; (4) unfair, deceptive, untrue, or misleading advertising; or (5) any act prohibited by Sections 17500-17577.5.
Section 17203 allows the court to order injunctions and other equitable defenses to prevent the unfair competition.
Unfair and misleading advertising falls under the prohibitions of this unfair competition law in California because the unlicensed use of a trademark of another may deceive customers.
Many seeking to use their mark to convey the message of quality to their customers would be well-advised to look into the myriad of ways of enforcing their unregistered trademark.
The corollary under Federal Law is the Lanham Act. If your competitor is out of state, we can investigate the use of the Lanham Act to stem the tide of unfair competition, and particularly deceptive advertising, nationwide.