Blizzard has filed a Notice of Opposition with the US Patent and Trademark Office against Valve to prevent Valve from registering the word “DOTA”. DOTA, Defense of the Ancients was originally a Warcraft III Mod, the mod’s creator, “Icefrog” was later picked up by Valve with aims of creating a full sequel, DOTA 2. The document states that the word has been exclusively used to refer to the mod of the Blizzard game, thus, “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”. Who gains the right to the name, is the courts’ decision to make now. On one hand, Blizzard had no part in making the original DOTA mod apart from providing the tools but at the same time, Valve made the move to snag the mod and elaborate on it knowing that the name was extremely tied to the name Warcraft III itself.