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

Joe Ng, CEO of fashion studio Shift, said Lululemon's pants may have inspired Costco's, but the design isn't as unique as a ...

The Canadian athleisure brand has accused the warehouse club operator of copying at least six of its products, including its ...

Cheaper look-alikes have been around for years, but social media has made them more popular. Dupes can move into shaky legal ...

Lululemon Athletica claims in its lawsuit filed in the U.S. District Court for the Central District of California that Costco has “unlawfully traded” on its reputation, goodwill and sweat equity by ...

Does your athleticwear from Costco look similar to a Lululemon outfit? That's intentional, a new lawsuit alleges.

For background, let’s go to Alexander Aciman’s exhaustive comparison of a pair of two pairs of pants: one sold by lululemon, and one sold under Coscto’s in-house brand Kirkland Signature. This was ...

Lululemon has a steep hill to climb. The line between following a trend and illegally copying a design can be quite ...

Canadian athletic wear maker Lululemon sued Costco in California federal court on Friday, alleging that the wholesaler sells ...

Lululemon has filed a lawsuit against Costco claiming that the membership-based wholesale retail company sold similar ...

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 filed a lawsuit against Costco over Kirkland brand products that allegedly copy its Scuba hoodies, Define jackets and ABC pants at lower prices.