premise: 1. "Proprietary Information" means any information, knowledge, or data that is received by the Receiving Party from the Disclosing Party in furtherance of or pursuant to the Purpose, and that is  (a) in writing and clearly marked with a proprietary or confidential legend at the time of disclosure;  (b) in a machine-readable form, with the information or the media in which it is provided being clearly marked with a proprietary or confidential legend at the time of disclosure, or if such marking is not practicable, such information or media being identified as proprietary or confidential by written communication of the Disclosing Party prior to or contemporaneously with its disclosure;  (c) disclosed orally or visually, with the information being identified as proprietary or confidential at the time of disclosure, and reduced to writing and clearly marked with a proprietary or confidential legend within thirty (30) days of the initial disclosure; or  (d) incorporated or embodied in a sample product or other equipment, material or item clearly marked with a proprietary or confidential legend at the time of disclosure.