Ah, Calvin Klein pants, the staple Christmas present for every man and teenage boy across the country. That's not sarcastic - I know multiple men who don't buy their own pants cause they get them as a ...

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 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 ...