definiens: means all books, records, files, documents, correspondence, andmanuals, or portions thereof, in each case only to the extent data and information included orreferenced therein relates to the Compound or any Product, the Inventory, Third Party DistributorAgreements, Purchased Know - How, Purchased Trademarks, Purchased Validation Materials orPurchased Domain Names ( including regulatory, financial, research and development andexpense records, correspondence and, to the extent not originals, complete and accurate copiesof all files relating to the filing, prosecution, issuance, maintenance, enforcement or defense ofany Purchased Trademarks, copyrights or other intellectual property rights within the PurchasedKnow - How, records and documents related to research and pre - clinical and clinical testing andstudies for the Compound or the Products, including laboratory notebooks, procedures, tests, dosages, criteria for patient selection, safety and efficacy and study protocols, investigatorsbrochures and all pharmacovigilance and other safety records ) that are maintained by Arena onthe Effective Date and necessary for, or are as of the Effective Date or were at any time during the24 - month period prior to the Effective Date used for, the development, manufacture orCommercialization of any Product in any country in the Territory, in all forms, including electronic, in which they are stored or maintained