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