T-Mobile Wins Ban On AT&T Unit's Color Scheme

Law360, New York (February 10, 2014, 10:40 PM ET) -- A federal judge has barred AT&T subsidiary Aio Wireless LLC from using a plum color scheme on the grounds that it likely infringes T-Mobile US Inc.'s iconic shade of magenta, a ruling experts say should serve as a resounding reminder that colors, when properly handled, can function as strong trademarks.

In a redacted ruling made public Feb. 3, U.S. District Judge Lee Rosenthal ruled that T-Mobile's bright pinkish color had developed a sufficient meaning as a protected source indicator for the carrier's wireless services through years...
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