premise: 5. Notwithstanding any other provisions of this Agreement, confidential information shall not include any information which: (a) Is or becomes publicly known through no wrongful act of the receiving party; or (b) Is, at the time of disclosure under this Agreement, already known to the receiving party without restriction on disclosure; or (c) Is, or subsequently becomes, rightfully and without breach of this Agreement, in the receiving party's possession without any obligation restricting disclosure; or (d) Is independently developed by the receiving party without breach of this Agreement; or