This month, the Kansas Supreme Court decided a case that affects every business that sells products for resale in Kansas.  Under Kansas antitrust law, any arrangement, contract, agreement or combination with a reseller that is designed or tends to control prices is illegal.  This means that resale price agreements between suppliers and their retailer customers are unenforceable and could subject suppliers to significant penalties.  These laws apply to suppliers whether they are based in Kansas or simply provide products for sale in Kansas.