Seldom does the phrase "sue the pants off" literally apply to every lawsuit, but in the case of Lululemon Athletica versus Calvin Klein Inc. accusations are flying that the fashion house has infringed ...

Lovers of figure-hugging yoga wear are a highly-prized market these days. And now, Lululemon Athletica Inc. wants to stand between them and their Calvins. Lululemon's skyrocketing popularity has been ...

TORONTO – 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.

Lululemon has settled a lawsuit with Calvin Klein that claims the U.S. fashion retailer infringed on a number of patents that cover the company's iconic yoga pants. The Vancouver-based yoga gear maker ...

Lululemon Athletica Inc., which built its brand on bum-hugging yoga wear, wants other manufacturers to keep their hands off its pants. The Vancouver-based retailer announced on Tuesday that it has ...

TORONTO – Trendy yoga gear maker Lululemon Athletica Inc.’s signature body-hugging pants have become so integral to the popularity of the brand that it is suing Calvin Klein Inc. for patent ...