premise: 2. For a period of five (5) years following the date of each such disclosure or development the receiving Party shall maintain such Confidential Information as confidential, except: (a) Confidential Information which is or becomes known publicly through no fault of the receiving Party; or (b) Confidential Information learned by the receiving Party from a third party entitled to disclose it; or (c) Confidential Information already known to the receiving Party before receipt from the disclosing Party as shown by the receiving Party's written records; or (d) Confidential Information which is independently developed by the receiving Party as shown by the receiving Party's written records; or