From a brand-new article on Autoblog (8/20/2013):
Tesla is not Tesla anymore, at least in China. The Palo Alto-based manufacturer has apparently given up on the fight over its name, for the time being. The name "Tesla" was trademarked by one Zhan Baosheng in 2006, while the American EV company didn't attempt to claim it until 2009 (we reported on this development a few weeks back).