premise: 4. The obligations under this Agreement shall not apply to information that is at any time:  (a) already known to the Receiving Party at the time it is disclosed to the Receiving Party;  (b) publicly known through no wrongful act of the Receiving Party;  (c) rightfully received from a third party without restriction on disclosure and without breach of this Agreement;  (d) independently developed by the Receiving Party;  (e) approved for release by written authorization of the party disclosing the Confidential Information (the "Disclosing Party");  (f) furnished by the Disclosing Party to a third party without written restriction on disclosure; or  (g) disclosed pursuant to a requirement of a governmental agency or of law, provided, however, that, to the extent viable under the circumstances, the party subject to the disclosure requirement has notified the Disclosing Party in advance of such disclosure and the Disclosing Party has had an opportunity to seek a protective order or other appropriate remedy and the party subject to the disclosure requirement has reasonably cooperated with such efforts; and provided further, however, that the -------- ------- ------- Receiving Party furnish only that portion of the Confidential Information that is legally required to be so disclosed.