Yes, there's a method behind his madness.

A company linked to Charlie Sheen - dubbed Hyro-gliff - has filed applications for trademarks on 22 phrases the former Two and a Half Men star spurt during his media blitz last month, RadarOnline.com has learned.

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The applications were filed between March 19-22 and is seeking to trademark Sheen’s now infamous phrases including: Duh, Winning; Vatican Assassin, Tiger Blood, Rock Star From Mars, Sober Valley Lodge and Sheen's Goddesses, among others.