Lululemon sues Costco. Here's what we know

Legal Dispute - Lululemon is suing Costco for allegedly selling unauthorized and unlicensed apparel that infringes on Lululemon's designs [2] - The lawsuit alleges Costco is unlawfully trading on Lululemon's innovation, research, and goodwill [3] - Costco declined to comment on the lawsuit [4] - The legality of selling "dupes" depends on copyright law and the likelihood of confusion standard [4] Brand and Consumer Perception - Lululemon is concerned about social media hashtags like "Lululemon dupes" promoting copycat products [3] - Lululemon alleges some consumers incorrectly believe these dupes are authentic Lululemon apparel [3] - Lululemon claims Costco uses the same manufacturers as branded products for its Kirkland Brand, leading consumers to believe Kirkland dupes are made by the same supplier [3]