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

Lululemon has filed a lawsuit against Costco alleging the wholesaler is selling “unlawfully traded” versions of its signature ...

Lululemon's leggings are well-known and highly prized. They're also pretty costly. However, now the company is taking aim at ...

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

Prosecutors described it as the largest coordinated takedown of health care fraud schemes in Justice Department history.

In the 49-page lawsuit filed in California, Lululemon shows the alleged design similarities of its products with Costco’s, as ...