definiens: shall mean the TUBULIN BINDING AGENTS that are described in the following : 1.15.1 the United States patent applications and patents listed in Appendix A ; 1.15.2 the United States and foreign patents issued from applications listed in Appendix A and from divisionals and continuations of such applications ; 1.15.3 claims of United States continuation -in - part applications and of equivalent foreign applications, and of the resulting patent(s ), that are directed to subject matter specifically described in and claim the benefit of the priority of the aforementioned United States and foreign applications listed in Appendix A ; 1.15.4 claims of all later -filed foreign patent applications, and of the resulting patents, that are directed to subject matter described in the United States patents and/or patent applications described in the foregoing subsections of this Article 1.15 ; and 5 1.15.5 any reissues, re -examinations or extension of United States patents described in the foregoing subsections of this Article 1.15