premise: 4. The obligations imposed on a Recipient Party with respect to Confidential Information shall not apply to Confidential Information disclosed to it hereunder which  (a) the Recipient Party can demonstrate is, at the time of disclosure, already known to the Recipient Party,  (b) is or becomes generally known to the public or is otherwise deemed to be in the public domain through no wrongful act of the Recipient Party,  (c) is received from a third party who has the legal right to so furnish such Confidential Information, or 