premise: (b) Notwithstanding anything in the foregoing to the contrary, Confidential Information shall not include information which:  a) was lawfully possessed, as evidenced by the Receiving Party’s records, by the Receiving Party prior to receiving the Confidential Information from the Disclosing Party;  (b) becomes rightfully known by the Receiving Party from a third-party source not under an obligation to Disclosing Party to maintain confidentiality; 