definiens: . Confidential Information means all Know - How, including without limitation proprietary information and materials ( whether or not patentable ), regarding a Party 's technology, products, business operations or objectives, which is designated as confidential in writing by the disclosing Party, whether by letter or by the use of an appropriate stamp or legend, prior to or at the time any such Know - How is disclosed by the disclosing Party to the other Party . Notwithstanding anything in the foregoing to the contrary, Know - How disclosed orally, electronically or visually by a Party, or disclosed in writing without an appropriate letter, stamp or legend, shall constitute Confidential Information of the disclosing Party if the disclosing Party, within thirty ( 30 ) days after such disclosure, delivers to the other Party a written document or documents describing the Know - How and referencing the place and date of such oral, electronic, visual or written disclosure and the names of the persons to whom such disclosure was made . For clarity, all reports submitted by ACHILLION to UMBC pursuant to Article IV and Article III, Section 3.2 hereof shall constitute Confidential Information of ACHILLION