Technologies and continued use of the terms "BWX", "BWX Technologies" or "BWXT" and derivations thereof and therefrom, due to the differences in the goods and services primarily associated therewith (e.g., nuclear versus fossil fuel). In the event that either Party becomes aware of any actual confusion or mistake occurring as a result of their uses of their respective marks, the Parties agree to communicate all details of each such instance to each other, and to cooperate reasonably to take steps to abate the cause of confusion or mistake, and to prevent any such confusion or mistake from arising again. 10 ARTICLE IV SHARED LIBRARY MATERIALS Section 4.1 Shared Library Materials. RemainCo and SpinCo acknowledge and agree that the Shared Library Materials represent a collection of shared historical and foundational information related to and derived from more than fifty (50) years of research and development focused on technology and design criteria applicable to the businesses of RemainCo and SpinCo, which information, including all Know-How and Copyrights contained therein, has application to the businesses of RemainCo and SpinCo. The Shared Library Materials identified as of the Distribution Date are set forth on Schedule 4.1, which may be amended or modified upon mutual agreement of the Parties from time to time to (i) include additional Shared Library Materials discovered after the Distribution Date or (ii) to reflect the results of the allocation process contemplated in Section 4.4 below. Section 4.2 Cross-License of Shared Library Materials. The Parties acknowledge and agree that each of 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)