definiens: shall mean the patents and patent applications listed on Exhibit 1 and any other United States or foreign patent applications(s ) and patents(s ) licensed to LICENSEE by YALE pursuant to, and during the term of, this Agreement and pertaining specifically to the compound ~-L - FD4C, together with any foreign countetparts . continuations, continuations ~ in - part, divisional or substitute patents, any reissues or reexaminations of any such applications or patents, and any extension of any such patents, and all patents and patent .. applications filed by or on behalf of [COMPANY] or Licensor or issued during the terms hereofto YALE . OT LICENSEE for any improvements on, or derivations from, the Sublicensed Inventions that .. pertain specifically to the compound B - L - FD4C and are useful for the development, commercialization, manufacture, use or sale of any Sublicensed Products