Retail giant Costco Wholesale (COST) is known as a place to buy products in bulk, such as 30 rolls of toilet paper or a 40-pound tub of sugar. Less known as a source for diamond engagement rings, ...

Tiffany and Company is alleging trademark infringement and counterfeiting. Feb. 15, 2013 — -- Famed jeweler Tiffany and Company is suing warehouse store giant Costco, claiming it sold knockoff ...

NEW YORK — Costco’s going to pay for selling “Tiffany” engagement rings that weren’t made by Tiffany. U.S. District Judge Laura Taylor Swain ruled on Monday that Tiffany is entitled to $11.1 million ...

Tiffany, the company that set a new standard for women’s diamond engagement rings when it introduced its trademark setting in 1886, is aiming to start a new marital tradition with a line of engagement ...

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 ...

In 1886, Charles Lewis Tiffany introduced the solitaire Tiffany Setting, a simple six-prong design that became the industry standard and remains a bestseller. Ever since, generations of young couples ...

NEW YORK -- 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.

Tiffany & Co sued Costco Wholesale Corp on Thursday to stop the largest U.S. warehouse club chain from selling what it called counterfeit diamond engagement rings bearing the luxury retailer's name.