Lululemon files yoga pants patent lawsuit against Calvin Klein

Trendy yoga gear maker Lululemon Athletica Inc. is suing Calvin Klein Inc. for patent infringement, accusing the designer of copying a waistband used on its popular body-hugging pants.

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Lululemon Is Suing Calvin Klein Over Yoga Pant Patents

Lululemon Is Suing Calvin Klein Over Yoga Pant Patents

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