A lawsuit alleging some type of business tort is one way to hold a competitor liable for deceptive and unfair business practices. When a competitor makes an unfair or untrue statement about their products or services, you should talk to a lawyer right away.The UCL forbids "unlawful, unfair or fraudulent" conduct in connection with virtually any type of business activity. Code § 17000, et seq. The. UCL generally prohibits any unlawful, unfair, or fraudulent business act or practice, as well as deceptive or misleading advertising. Call (408) 573-5700 - Silicon Valley Law Group is dedicated to serving our clients with a range of legal services including Business and Corporate matters. In California, class action lawyers wield two powerful tools: the Unfair Competition Law,. Philips Electronics North America Corp. United States District Court, N.D. California, San Jose Division. 50 West San Fernando Street7th FloorSan Jose, CA 95113.