definiens: means, with respect to an IPI-14 5 Product in a particular country, the period of ti me commencing on the first Commercial Sale of such IPI -145 Product in such country and ending on the last to occur of ( a ) the date on which all Duvelisib Patent Right s containing a Valid Claim covering the composition, formulation, preparation, Manufacture, Commercializ ation or other use of such IPI-145 Product in the c ountry of sale have expired, ( b ) the date on which all Duveli sib Patent Rights containing a Valid Claim covering the Manufacture - 12 - THIS EXHIBIT HAS BEEN REDACTED AND IS THE SUBJECT O F A CONFIDENTIAL TREATMENT REQUEST . REDACTED MATERIAL IS MARKED WITH [ * * * ] AND HAS BEEN FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE C OMMISSION