Lululemon has filed a lawsuit against Costco that accuses the wholesale club operator of selling lower-priced duplicates of some of its popular athleisure clothing.Lululemon Athletica claims in its lawsuit filed in the U.

Lululemon alleges that Costco has stolen the intellectual property of its Scuba hoodies and sweatshirts, Define jackets and ABC pants.

Lululemon is suing Costco alleging the wholesale retailer is selling knock-off, or 'dupe' versions items baring its trademark protected designs and marketing terms.