premise: (b) “Confidential Information” means:  (1) any information, whether tangi-ble or intangible, in written or in machine readable form that is marked or designated in writing as “Proprietary” or “Confidential” at the time of disclosure;  (2) any information disclosed orally or visually to Receiving Party, provided that such information is orally identified as “Confidential” or “Proprietary” prior to or at the time of its disclosure,  (3) any information derived or extracted from information provided to Receiving Party that Receiving Party reasonably should conclude was intended to be confidential, or  (4) any information that is considered a trade secret and not expressly released to Receiving Party by Disclosing Party.