RemainCo and SpinCo and additional members of the RemainCo Group and SpinCo Group presently have shared access to and rights to exploit the Shared Library Materials and may have a right and interest in and to certain Shared Library Materials, including in and to Intellectual Property embodied therein. Accordingly, (i) with respect to RemainCo's right and interest in and to the Shared Library Materials, RemainCo, for itself and as representative of all other members of the RemainCo Group, hereby grants to SpinCo (x) a perpetual (subject to Section 4.4), irrevocable, exclusive, royalty-free, worldwide right and license with the right to grant sublicenses (solely as set forth in Section 5.6) to use the Shared Library Materials, including all Know-How and Copyrights embodied therein, for any purpose in the SpinCo Core Field and (y) a perpetual (subject to Section 4.4), irrevocable, non-exclusive, royalty-free, worldwide right and license with the right to grant sublicenses (solely as set forth in Section 5.6) to use the Shared Library Materials, including all Know-How and Copyrights embodied therein, for any purpose in any field other than the RemainCo Core Field or the SpinCo Core Field and (ii) with respect to SpinCo's right and interest in and to the Shared Library Materials, SpinCo, for itself and as representative of all other members of the SpinCo Group, hereby grants to RemainCo (x) a perpetual (subject to Section 4.4), irrevocable, exclusive, royalty-free, worldwide right and license with the right to grant sublicenses (solely as set forth in Section 5.6) to use the Shared Library Materials, including all Know-How and Copyrights embodied therein, for any purpose in the RemainCo Core Field and (y) a perpetual (subject to Section 4.4), irrevocable, non- exclusive, royalty-free, worldwide right and license with the right to grant sublicenses (solely as set forth in Section 5.6) to