RetailMeNot fires back at suit filed by Mary Kay cosmetics

RetailMeNot Inc. officials said a lawsuit filed against the company by Mary Kay Inc. misuses trademark law in an attempt to restrict information about the cosmetics company on RetailMeNot.com and other websites owned by the Austin coupon provider. In March, Addison, Texas-based Mary Kay, filed the lawsuit in an effort to block RetailMeNot from using its likeness on coupons. The suit, filed in a U.S. District Court in Dallas, alleges that the online coupon company is offering discounts for Mary…