CKE Restaurants Suing Jack in the Box over TV Ads

CKE Restaurants Inc. (CKR), which trades on the New York Stock Exchange, owns and operates Carl's Jr., Hardee's, and La Salsa restaurants. They are suing Jack in the Box Inc. (JBX), which also trades on the NYSE, because of TV ads that it says suggest Carl's Jr. and Hardee's use the rear end of a cow to make Angus beef hamburgers.