definiens: shall mean all tangible or intangible know - how, tr ade secrets, inventions ( whether or not patentable ), data, clini cal and preclinical results, analytical reference m aterials and all confidential and/or proprietary chemical substances, biological materials, devices, prototypes, assays, and technical information, that has been developed or a cquired before the Effective Date ( with the right t o disclose and sublicense and subject to the rights of third parti es as of the Effective Date ) by Sublicensor to the extent such technology is reasonably necessary or useful for th e development, manufacture, use, import, offer for sale or sale of the Sublicensed Product, including the Eisai Lic ensed Technology . With regard to the addition of i m provements to the Eisai Licensed Technology, Sublicensee shall have the same rights afforded to Sublicensor under the Eisai Agreement