Federal Dilution Act
15 U.S.C.A. Section 1125(c)(1)
The owner of a famous mark shall be entitled, subject to the principles of equity and upon such terms as the court deems reasonable, to an injunction against another person's commercial use in commerce of a mark or trade name, if such use begins after the mark has become famous and causes dilution of the distinctive quality of the mark. State laws often do not even require likelihood of confusion