definiens: shall mean all patents, patent applicati.ons and inventi.on discl.osures the subject .of which is an inventi.on : ( i ) c.onceived Dr reduced t.o practice j.ointly by perscmnel .of Bi.ogen and Sunesis in the c.ourse .of perf.orming the Research Program ; .or ( ii ) c.onceived .or reduced t.o practice j.ointly by Bi.ogen and Sunesis in the cDurse .of activities directed t.o the disc.overy, research .or devel.opment .of C.omp.ounds f.or use in the Field ; as well as any divisi.ons, cDntinuati.ons, c.ontinuati.ons - in - part, reissues, reexaminati.ons, extensi.ons Dr .other g.overnmental acti.ons which extend any .of the patent applicati.ons .or patents in ( i ) .or ( ii ) ab.ove, and any substituti.ons, c.onfirmati.ons, registrati.ons, revalidati.ons · .or f.oreign c.ounterparts .of any .of the f.oreg.oing