premise: (b) Notwithstanding anything in the foregoing to the contrary, Confidential Information shall not include information which:  (i) was known by the Receiving Party prior to receiving the Confidential Information from the Disclosing Party;  (b) becomes rightfully known to the Receiving Party from a third-party source not known (after diligent inquiry) by the Receiving Party to be under an obligation to Disclosing Party to maintain confidentiality; 