[citation][nom]arcu86[/nom]DOTA wouldn't exist it wasn't for Warcraft III's development tools thus, it is a offspring of blizzard's product, blizzard owns entitlement not to the title of "DOTA" but to the birth of it. DOTA has mechanics from warcraft III's hero and micro system, and game play mechanics. Blizzard certainly shouldn't let one of its offspring go to other hands even if its only 75% or 50% blizzard, its still one of there children.[/citation]
The Warcraft series wouldn't exist without the use of the MS-DOS (and later Windows) environment provided by Microsoft, thus it's a child product of MS's own OS. As such, Microsoft should obviously own the Warcraft name and anything associated with it.
(obligatory sarcasm tag)