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, the prestigious sportswear brand, has filed a lawsuit against Costco, accusing it of selling replicas of its products under the Kirkland brand.

The term "dupe" itself has been appearing more in legal filings, says Alexandra Roberts, law and media professor at Northeastern University — including in Lululemon's against Costco. That could ...

Jefferies analysts said Lululemon is straying further away from its yoga roots with designs similar to generic apparel brands ...

Costco Wholesale Corporation (NASDAQ:COST) is one of the 12 best consumer goods stocks billionaires are quietly buying.

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 ...

Less expensive versions of high-end clothing and other accessories are just about everywhere these days. But these fashio ...

NEW YORK — Fashion "dupes," or less expensive versions of high-end clothing and other accessories, are just about everywhere these days. They're also drawing some businesses into legal battles.

How can Lululemon prove that Costco actually infringed on its copyright? Lululemon has a steep hill to climb. The line between following a trend and illegally copying a design can be quite subjective.

KEY TAKEAWAYS Lululemon sues Costco for selling dupes of its popular athleisure apparel. The lawsuit highlights the rise of fashion dupes, driven by social media.

In our latest round-up, the Delhi High Court stays a major damages award against Amazon, INTA boasts record-high London pre-sale registrations, and more.

Lululemon Is Suing Costco for Allegedly Selling Dupes of Its Products This isn’t the first time the apparel company has levied a copycat accusation.