As used in this chapter, unfair competition shall mean and include any unlawful, unfair or fraudulent business act or practice and unfair, deceptive, untrue or misleading advertising and any act prohibited by Chapter 1 (commencing with Section 17500) of Part 3 of Division 7 of the Business and Professions Code.
Cal. Bus. & Prof. Code § 17200
Enforcement
Known as the Unfair Competition Law (UCL)
The act spans §§ 17200–17210 (14 sections).
Applied in 2,827 court decisions — leading case 25 Cal. 4th 826 - Aguilar v. Atlantic Richfield Co. (2001)
Most recently applied in Costar Group, Inc. v. Commercial Real Estate Exchange, Inc. (June 2025)
Amended by Stats. 1992, Ch. 430, Sec. 2
How often courts cite this section
Court decisions citing this, by year. The dip in the last several years is a data-coverage gap, not a real trend — our corpus holds fewer opinions from the most recent years, so recent citations are undercounted.
Official source: California Legislative Information. Reproduced from public-domain California statutes; confirm against the official source for the current text. Not legal advice.