Zynga is suing the makers of casual sex app Bang With Friends over claims that the app infringes upon its With Friends series of games.

Bang With Friends Inc - the company behind the app of the same name - registered its internet domain last year according to the complaint, filed in San Francisco. 

Deliberate infringement 

While there's little actual connection between Bang With Friends - which pairs up Facebook friends anonymously for casual sex - and Zynga's library, the social giant alleges that the company chose the name with "Zynga's game trademarks fully in mind."

According to the filing, the Bang With Friends app infringes upon Zynga's trademark covering games such as Words With Friends and Chess With Friends.

If successful, the court order will prevent the creators of Bang With Friends from using the name, with Zynga also receiving compensation for any damages. 

[Source: Business Week]