In a lawsuit filed Friday, Lululemon claimed Costco was violating its patents by selling “knockoff” versions of its pants, ...

Unfazed by the heat, Caleb Olson dominated the field at America's most prestigious trail race. So what was that "sweater?" ...

Lululemon is suing Costco, alleging that the discount wholesaler is selling knockoffs of its $128 pants and other pricey ...