premise: Upon receiving a written request from the disclosing party, the receiving party shall cease to use the Confidential Information disclosed to it and shall promptly thereafter return to the disclosing party all written or otherwise documented Confidential Information disclosed to it pursuant to this Agreement, except that one copy of all such Confidential Information may be kept for archival purposes and for the purpose of defending against any lawsuits brought by the disclosing party against the Recipient.