(March 22, 2016, 2:16 PM EDT) -- SAN FRANCISCO — A class action claiming that an insurer hid its use of a formula resulting in higher rates for long-term customers belongs before the state’s insurance office, a federal judge in California held March 17 in staying unfair competition law (UCL), California Business and Professions Code Section 17200, et seq., claims (Andrea Stevenson v. Allstate Insurance Co., et al., No. 15-4788, N.D. Calif.; 2016 U.S. Dist. LEXIS 34923)....