premise: Notwithstanding the above, Confidential Information will not include any information that is  (a) rightfully in the public domain other than by a breach of a 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 the receiving party; 