The athleisure giant claims Costco's budget-friendly dupes are misleading consumers and infringing on their patents.

Lululemon is known for athleisure clothing and said that Costco uses makers of popular brands to make similar items for its ...

The athletic-wear giant in Lululemon (NASDAQ:LULU) filed suit in California last week, accusing Costco (NASDAQ:COST) of ...

The athleisure brand is accusing Costco of selling knockoffs of several of its signature designs and offering them at a lower price under the wholesale club giant's Kirkland Signature brand.

The suit seeks a jury trial and for the court to order Costco to pay Lululemon damages in the form of lost profits, an order ...

Lululemon has filed a lawsuit accusing Costco of selling cheap “dupes” of its popular yoga pants and hoodies. The company ...