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

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

In the 49-page lawsuit filed in California, Lululemon shows the alleged design similarities of its products with Costco’s, as well as the price differences.

Lululemon is suing Costco, alleging the wholesale retailer knowingly sold knockoff versions or dupes of its popular products.

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Lululemon filed a lawsuit against Costco on Friday, accusing the wholesale club operator of selling lower-priced duplicates of some of its popular athleisure apparel.

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Lululemon Athletica launched a lawsuit over the weekend against Costco Wholesale, accusing the warehouse retail giant of infringing on its trademarks by selling clothing that is "confusingly ...