Costco sells house-brand motor oil under the Kirkland Signature label it uses for many other products. Does this oil pass the ...

Wondering if you should turn to Costco or Trader Joe's for a cheap, tasty lager? We've got you covered with a detailed ...

Costco regulars say these overlooked items—from wipes to sardines—are some of the best bargains in the warehouse.

Costco’s iconic $5 Kirkland Rotisserie Chicken is well worth the price of membership, customers say. “If you buy a rotisserie ...

Costco launched a private label named Kirkland Signature that put a unique spin on the concept of shopping generic. The ...

Brewed by Deschutes Brewery in Bend, Oregon, Kirkland Lager just won silver at the World Beer Cup and previously won gold at ...

Lululemon alleges that Costco has stolen the intellectual property of its Scuba hoodies and sweatshirts, Define jackets and ABC pants.

Vancouver-based Lululemon asserts that Costco sells apparel that mimics the look and feel of its products.

The Canadian athleisure brand has accused the warehouse club operator of copying at least six of its products, including its ...