definiens: means, on a country - by - country and product / service - by - product / service basis, theperiod commencing on the Effective Date and ending on the later of : ( a ) the expiration of the last Valid Claim withinthe Patent Rights Covering the Licensed Product 14 or Licensed Service or ( b ) the tenth ( 10 ) anniversary of the date of the First Commercial Sale of the LicensedProduct, Licensed Service, Enabled Product or Enabled Service ; provided that, for any Enabled Product or EnabledService that was a Licensed Product or Licensed Service, the date of the First Commercial Sale in clause ( b ) shall bedeemed to be the earlier of ( i ) the date of First Commercial Sale of the Enabled Product or Enabled Service that was aLicensed Product or Licensed Service and ( ii ) the date of the First Commercial Sale of the Licensed Product orLicensed Service that became such Enabled Product or Enabled Service