Lululemon filed a lawsuit Friday accusing Costco of copying its patented athleisure designs and selling them under its ...

In a lawsuit against Costco over a variety of apparel designs, the athleisure brand laments the proliferation of ...

Lululemon has filed a lawsuit against Costco in the U.S. District Court for the Central District of California, alleging they ...

The athleisure company alleged in a lawsuit that Costco is selling discounted "dupes" of some of Lululemon's most popular items.

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

Vancouver-based Lululemon asserts that Costco sells apparel that mimics the look and feel of its products.

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