Costco sells luxury jewelry for less, including this pair of Round Brilliant 3.00 ctw VS2 Clarity, I Color Diamond Platinum ...

Items such as Aspirin and Thermos are so common that most people use the name to refer to the product, not the brand. That’s how trademark protections are lost and that’s why corporate America defends ...

Tiffany & Co. is suing Costco for allegedly marketing engagement rings as "Tiffany" brand. The lawsuit claims Costco sold engagement rings in stores under the label "Tiffany" in stores but never ...

A Tiffany & Co. subsidiary is suing Costco, claiming the wholesale club operator has been selling engagement rings wrongly labeled “Tiffany” rings. The high-end jeweler filed lawsuit in U.S. District ...

These top picks from Costco’s 12 Days of Deals feature big savings on gifts and gadgets.

Costco must pay the storied jewelry company Tiffany & Co. more than $19 million for selling about 2,500 diamond rings falsely identified on store signs as "Tiffany" rings, a federal judge ruled Monday ...

Costco must pay the storied jewelry company Tiffany & Co. more than $19 million for selling about 2,500 diamond rings falsely identified on store signs as “Tiffany” rings, a federal judge ruled Monday ...

NEW YORK (CNNMoney) — Luxury retailer Tiffany & Co. is seeking millions in damages from warehouse club Costco, alleging the discount retailer was selling counterfeit Tiffany diamond rings. The lawsuit ...

A Huntington Beach shopper has touched off a legal war between discount retailer Costco and Tiffany, one of the world’s most exclusive jewelry brands. The dispute began in November when a woman ...