provided by US law. {***} Confidential portions of this exhibit have been redacted and filed separately with the Commission pursuant to a confidential treatment request in accordance with Rule 24b-2 of the Securities Exchange Act of 1934, as amended. Page 7 of 28 XI. CONFIDENTIALITY A. SCIEN and HEMISPHERX agree to keep secret and confidential all confidential, proprietary or non-public information ("Confidential Information") of the other Party .This provision shall survive termination or expiration of this Agreement. B. Such Confidential Information will be kept confidential until 5 years after the expiration of termination of this Agreement. Notwithstanding the foregoing , Confidential Information of a Party shall not include information which the other Party can establish by written documentation was (a) to have been publicly known prior to disclosure of such information by the disclosing Party to the other Party, (b) to have become publicly known, without fault on the part of the other Party, subsequent to disclosure of such information by the disclosing Party to the other Party, (c) to have been received by the other Party at any time from a source , other than the disclosing Party, rightfully having possession of and the right to disclose such information, (d) to have been otherwise known by the other Party prior to disclosure of such information by the disclosing Party to the other Party, or (e) to have been independently developed by employees or agents of the other Party without access to or use of such information disclosed by the disclosing Party to the other Party. C. The confidentiality obligations contained in this section XI shall not apply to the extent that the receiving Party (the "Recipient") is required (a) to disclose information by law, order or regulation of a governmental agency or a court of competent jurisdiction , or