premise: "Confidential Information" shall not include information, technical data or know-how which: (a) is already known to the Receiving Party at the time of disclosure and is not otherwise subject to restriction; (b) is or becomes publicly known through no wrongful act of the Receiving Party; (c) rightfully disclosed to Receiving Party by a third party who has no obligation of confidentiality to the Disclosing Party; (d) is independently developed by the Receiving Party; or