definiens: means as to a Product ( a ) in an y country in the Territory in which one or more Valid Claims of the BioHEP Patent Rights and/or Spr ing Bank Improvement Patent Rights cover such Product in such country at the time of First C ommercial Sale in such country, the period of time commencing on the First Commercial Sale of suc h Product in such country and ending on the expiration of the last to expire of the BioHEP Patent Rights and Spring Bank Improvement Patent Rights containing one or more Valid Claims c overing such Product in such country or ( b ) in any country in the Territory in which no Valid C laim of the BioHEP Patent Rights or the Spring Bank Improvement Patent Rights covers such P roduct in such country at the time of First Commercial Sale in such country, the - 9 - period of time commencing on the First Commercial S ale of such Product in such country and ending on the later of ( i ) expiration of the last t o expire of the BioHEP Patent Rights and Spring Bank Improvement Patent Rights containing one or mo re Valid Claims covering such Product in such country or ( ii ) expiration of the last to expi re of the BioHEP Patent Rights and Spring Bank Improvement Patent Rights containing one or more Va lid Claims covering such Product in either the United States or a country of the European Union