Online game developer Digital Chocolate has sued rival Zynga, claiming that the popular social game Mafia Wars infringes on its trademark (via Courthouse News).
Digital Chocolate claims that they coined the name for their own game in 2004 and have superior rights to the trademark. They also say that they sent written notification to Zynga last year, who in turn promised to stop using the name.
However, Zynga has since embarked on a multimillion-dollar advertising campaign with 7-Eleven while filing additional trademark applications for the property.
