premise: 5. Information shall not be deemed Confidential Information and the receiving party shall have no obligation regarding any information for which it can be proven in written documentation  (a) is already known to the receiving party at the time that it is disclosed without use of the Confidential Information;  (b) is or becomes publicly known through no wrongful act contrary to this Agreement of the receiving party;  (c) is rightfully received from a third party without obligation of confidence or restriction on disclosure from receiving party and without breach of this Agreement; 