Cease and desist in San Francisco due to criminal violations

In May 2011, Uber received a cease-and-desist letter from the San Francisco Municipal Transportation Agency, claiming it was operating an unlicensed taxi service, and another legal demand from the California Public Utilities Commission that it was operating an unlicensed limousine dispatch. Both claimed criminal violations and demanded that the company cease operations. In response, the company, among other things, changed its name from UberCab to Uber.