Last Week, Alexander Sliwinski from Joystiq says (in Activision applies for Drum Hero trademark) Activision has applied to trademark Drum Hero. Yes, your initial reaction is likely the same as ours: "Wait, how did Activision not do that already?" Good question, but apparently the Guitar Hero, DJ Hero, and Band Hero publisher only applied for the trademark in late October. This does no...

And oxm.co.uk says (in Drum Hero trademark applied for) Activision pushes the Guitar Hero series into more directions...
Activision has applied to trademark Drum Hero, reports MTV Multiplayer.

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And Brian Warmoth from MTV Multiplayer says (in Activision Files 'Drum Hero' Trademark) Activision already has "Guitar Hero," "DJ Hero" and "Band Hero" under its wings, but a filing from the end of October indicates that they want "Drum Hero" as well. Though the claim was still being processed as of November 3rd, it clearly marks the company's territory for the potential titl...