How Increased Competition from Generic Drugs Has Affected Prices and Returns in the Pharmaceutical Industry
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Dynamic competition in pharmaceuticals. Patent expiry, generic penetration, and industry structure.
This paper investigates patterns of industrial dynamics and competition in the pharmaceutical industry, with particular reference to the consequences of patent expiry in different countries. We focus on the competition at the level of single chemical entities, distinguishing between original brands and generic products. Quarterly data, spanning from July 1987 to December 1998, on sales of pharm...
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