premise: 4. The restrictions of this Agreement on use and disclosure of Confidential Information shall not apply to information, which is: (a) in the public domain as of the date of this Agreement or which later comes into the domain from a source other than the Recipient; (b) in the Recipient’s possession free of any obligation of confidence at the time of Owner’s communication thereof to the Recipient; (c) developed by the Recipient independently of and without reference to any of the Owner’s Confidential Information or other information that the Owner disclosed in confidence to any third party and there is tangible evidence to support such independent development; (d) rightfully obtained by the Recipient from third parties authorized to make such disclosure without restriction; or