definiens: shall mean all present and future inventions, trade secrets, copyrights, know - how, data, regulatory sub missions and other intellectual property of any kind ( including any pr oprietary biological materials, compounds or reagents but not including TKT Patent Rights ) which are owned or controlled by, or licensed ( with the right to sublicense ) to, TKT relating to or necessary or useful for the manufact ure, use, distribution or sale of GA - EPO, including but not limited to any pa tents or patent applications licensed from Third Parties . With respect to TKT Te chnology which has been licensed to TKT by a Third Party, ( i ) Aventis agree s to assume and pay for its portion of any costs, expenses, fees or royalties a ssociated with its use of sublicense rights relating to such licensed TKT Tec hnology to the extent described in Section 8.7, and ( ii ) if TKT does not currently have the right to sublicense such intellectual property to Aventis he reunder, such license is listed on Schedule 1.24 hereto and TKT shall use co mmercially reasonable efforts to obtain the right to sublicense such intellectual property ( as well as any intellectual property licensed to TKT hereafter whi ch is included in the TKT Technology ), to Aventis hereunder