Blizzard files official complaint against Valve’s “DOTA” trademark

Blizzard has filed a Notice of Opposition with the US Patent and Trademark Office to Valve’s application of the “DOTA” trademark.

The word is used specifically for a mod of Blizzard’s RTS game Warcraft III thus Valve has no right to trademark the name for their own profit and gain the document claims.

“By virtue of that use, the DOTA mark has become firmly associated in the mind of consumers with Blizzard, including to signify a highly popular scenario or variant of one of Blizzard’s best-selling computer games, Warcraft III.” one part of the document states.

If this case is won by Blizzard, the only thing it will affect will be the name used by Valve for their upcoming game.

Thanks, Joystiq.