Costco's 'Tiffany' Rings Infringe Trademarks, Judge Says

Law360, New York (September 8, 2015, 3:43 PM EDT) -- A New York federal judge ruled Tuesday that Costco Wholesale Corp. had infringed Tiffany & Co.'s trademarks by using the jeweler's name to sell diamond rings, rejecting the retail giant's argument that "Tiffany" is an unprotectable generic name for a type of ring setting.

The ruling came after more than two years of heated litigation over the unauthorized use of the iconic jeweler's name on Costco's rings. Tiffany called it flat-out counterfeiting, but Costco argued that "Tiffany setting" had become a widely-used generic term for the highly popular style of pronged ring setting created by Tiffany's founder more than a century...

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