By Eric Auchard FRANKFURT (Reuters) – A regional German court has issued a temporary injunction against Uber, the U.S.-based online chauffeur service, saying its drivers lacked necessary commercial permits, potentially barring the company from operating in cities across Germany. San Francisco-based Uber, which allows users to summon taxi-like services on their smartphones, has faced regulatory battles and court injunctions from its early days, even as it has expanded rapidly into roughly 150 cities around the world. In its ruling, the Frankfurt Regional Court said the company could no longer offer its Uber and UberPop phone apps to connect drivers with passengers, stating that Ubers network of drivers lacked the necessary commercial licenses to pick up passengers. German law only allows drivers to pick up passengers without a commercial license if the driver charges no more than the operating cost of the trip.