premise: All written Confidential Information delivered by one party hereto to the other party pursuant to the Agreement shall be and remain the property of the delivering party, and upon the written request of the delivering party, the receiving party shall  (i) promptly return such Confidential Information and shall not retain any copies or other reproductions or extracts thereof,  (ii) destroy or have destroyed all memoranda, notes, reports, analyses, compilations, studies, interpretations, or other documents derived from or containing Confidential Information, and all copies and other reproductions and extracts thereof, and 