Lululemon is accusing Costco of stealing from its "path-breaking" brand by selling dupes of its sweatshirts, jackets and ...

Lululemon is suing Costco for allegedly infringing on its trademarks and design patents by selling dupes of its clothes.

Lululemon is suing Costco, alleging that the discount wholesaler is selling knockoffs of its $128 pants and other pricey ...

In a lawsuit filed Friday in the U.S. District Court for the Central District of California, Lululemonclaims that certain Costco products imitate its own designs so closely that it constitutes “trade ...