Lululemon has sued Costco for allegedly selling counterfeit versions of its popular athleisure clothing, including Scuba hoodies and Define jackets. Lululemon claims Costco's Kirkland brand uses unauthorized copies of its patented designs, misleading consumers into believing they are purchasing authentic Lululemon products. The lawsuit, filed in California, seeks an injunction against further sales and unspecified monetary damages. Costco has yet to respond to the allegations. This isn't Lululemon's first legal battle; they previously had a dispute with Peloton, which later resulted in a partnership.

Prepared by Christopher Adams and reviewed by editorial team.