premise: The receiving party shall not be liable for the disclosure of any Confidential Information which is: (a) in the public domain other than by a breach of this Agreement on the part of the receiving party; or (b) rightfully received from a third party without any obligation of confidentiality; or (c) rightfully known to the receiving party without any limitation on use or disclosure prior to its receipt from the disclosing party; or (d) independently developed by employees of the receiving party; or 