Massively reported that The War Z looked as though the trademark for its name would be suspended by the U.S. Patent and Trademark Office, forcing the game to choose another title. The game's creator, Sergey Titov, is disputing the suspension, however.
Corresponding with Kotaku, Titov said that he had received no such notice and is investigating the situation. "I assume what you see is one of the preliminary applications since it said that it suspended because [the] other application exists," he said. "I've sent an email to our lawyer who filed [the] application and [is] working with us to to provide more details on all this."
The War Z has been in hot water as of late due to prematurely launching on Steam and then being forcibly removed by Valve due to accusations of fraud and missing content.