definiens: means, with respect to the [COMPANY] Product in a ny country in the Territory, that one or more Generic Products are or become commercially available in su ch country, and such Generic Products have a market share ( in t he aggregate ) of [ * * * ] or greater in a Calendar Qua rter, provided that such Generic Competition shall be deemed to e xist only for so long as unit volume sales of such Generic Products in such country, as a percentage o f total unit volume sales of [COMPANY] Products and such Generic Products, during any Calendar Quarter there after exceeds [ * * * ], and, if such Generic Product m arket share falls below [ * * * ] in such country, Generic Competit ion shall not thereafter be deemed to exist until t he unit volume market share of Generic Products again exceeds [ * * * ] . Market share is based on the aggregate market in such country of the [COMPANY] Product and the Generic Pr oducts, based on units of the [COMPANY] Product sol d and units of such Generic Products sold in the aggregat e, as reported by Quintiles / IMS Health, or if such data are not available, such other reliable data source as reaso nably agreed by the Parties