definiens: means, with respect to a particular country and a particular Reverted Product or Terminated Licensed Product tha t is the subject of the royalty obligations under S ections 17.7.2 ( Reversion ) or 17.7.3(c ) ( Termination by San ofi at Will or for a Change of Control of [COMPANY], or by [COMPANY] for material breach or Bankruptcy ), the period of t ime commencing upon the [ * ] of such Reverted Produc t or Terminated Licensed Product in such country and end ing upon the latest of ( a ) the date on which there is no Valid Claim ( as such term is applied mutatis mutandis to the Foreground IP licensed by Sanofi to [COMPANY] u nder Section 17.7.3(c ) ) that would be infringed by [ * ] o f such Reverted Product or Terminated Licensed Prod uct in such country, ( b ) the expiration of any Regulatory Exclusivity granted with respect to such Reverted P roduct or Terminated Licensed Product in such country, and ( c ) [ * ] of such Reverted Product or Terminated Licens ed Product in such country