Hey Sucker, We've Got Your China Trademark And Your're Goin' Down. - China Law Blog: a blog about Chinese law and the legal issues of doing business in China.
http://www.chinalawblog.com/2009/07/free_china_legal_advice_do_not_1.html
"if you are having product made in China with your name on it, you had better register your trademark in China, even if (especially if?) your China presence is through a third party. "
Hostin: It's Naked Cowboy, 1; naked M&M, 0 - CNN.com
http://www.cnn.com/2008/CRIME/07/01/naked.cowboy/index.html?eref=rss_latest
"plausibly argues that consumers would believe that the M&M Cowboy characters were promoting a product rather than merely parodying The Naked Cowboy, and that viewers would believe that The Naked Cowboy had endorsed M&Ms"