Blizzard Sues Over DOTA TM

This document is Blizzard's "notice of opposition" to Valve's efforts to trademark "DOTA," to which Blizzard has long objected. This federal lawsuit follows indications that Blizzard is planning a retail release for their own DOTA game, which at one point was thought to be a StarCraft II modification. Blizzard filing lists the following reason for opposition: "Priority and likelihood of confusion."