By Eric Auchard FRANKFURT (Reuters) – A German regional court has issued a temporary injunction against Uber, the fast-growing, U.S.-based online chauffeur service which is no stranger to legal challenges from taxi-cab rivals and regulators around the globe. In its ruling, the Frankfurt Regional Court said the company could no longer offer its phone apps to connect drivers with passengers, stating that Ubers network of drivers lacked the necessary commercial licenses to pick up passengers. Uber responded in a statement that it planned to appeal the court decision and in the meantime would continue operating across Germany, a country where its customer base has grown fivefold so far this year. The courts decision raises the stakes for Uber in Germany.