definiens: Generic Competition " . Generic Competition shall mean . wil.h respect to a Product in a given country in a given Calendar Quarter, if, during slIch Calendar Quarter, one or more Generic Product shall be commerciall y available in such country and slIch Generic Product [ shall have a market hare of twenty percent ( 20 % ) r more of the aggregate market share of Products and Generic Products in the Field ( ba ' ed on data provided by IMS International, or if such data is not available, such other reliable Third Party data source as reasonably determined by ubist and agreed to by [COMPANY] ] * ( such agreemenl not to be unreasonably wilhheld ) ) Las measured by the number of grams of such Products and Gencric Products utilized by patients during sllch alendar QuaI1crl * ; pruvided, however . that, if [ I MS International data ( or data li'om another data ourcel * selected in accordance with the foregoing ) is unavailable to determine [ the percentage market sharel * for a country in the European Ullion ( " EU ' ) where a Generic Product is being sold, the average Generic Competition of the cOllnlries in the EU 1'01 ' which slIch data is available will be deemed to be the Generic Competition for such country in which such data is not available