definiens: shall mean, except for US Patent No . 5,374,726, entitled " Process for Preparing 10 - Deazaaminopterins and 5,10- and 8,10- Dideazaaminopterins from Pteroic Dicarboxylic Acid Diesters, " that relates tothe manufacture of PDX, all patents and patent applications owned or controlled by Licensor as of the Effective Datethat relate to the manufacture, use or sale of PDX, including without limitation ( a ) all patent applications listed onExhibit A ; ( b ) all patents that have issued or in the future issue from the patent applications described in clause ( a),above, including utility, model and design patents and certificates of invention ; and, ( c ) all divisionals, continuations, continuations - in - part, reissues, renewals, extensions or additions to any such patent applications and patents set forthin clause ( a ) above ; all to the extent and only to the extent that Licensor has the right to grant licenses, immunities orother rights thereunder