definiens: means all proprietary materials, data or other information ( whether or not patentable)regarding a Person ’s knowhow, products, business information or objectives, that are designated as confidential inwriting by the disclosing party, whether by letter or by the use of an appropriate stamp or legend, prior to or at the timeany such material, data or other information is disclosed by such Person to the recipient . Notwithstanding theforegoing, materials, data or other information that are disclosed by a Person in writing without an appropriate letter, stamp or legend, or that are orally, electronically or visually disclosed by a Person, also constitute ConfidentialInformation of such Person if ( i ) within thirty ( 30 ) calendar days after such disclosure, such Person delivers to therecipient a written document or documents describing the materials, data or other information indicating that suchmaterials, data or other information constitute Confidential Information, and referencing the place and date of suchoral, visual, electronic or written disclosure and the names of the persons to whom such disclosure was made, or ( ii)such materials, data or other information are of the type that are customarily considered to be confidential informationby Persons engaged in activities that are substantially similar to the activities being engaged in by the Personsexchanging such information . Confidential Information does not include any information that is ( i ) already known to therecipient prior to the date of disclosure to the recipient as evidenced by the recipient ’s written records made prior tosuch date, ( ii ) publicly known prior to or after disclosure other than through unauthorized acts or omissions of therecipient, ( iii ) disclosed in good faith to the recipient by a Third Party lawfully and contractually entitled to make suchdisclosure or ( iv ) developed by or for the recipient without the use of any Confidential Information of the disclosingparty, as evidenced by the recipient ’s written records