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The effect of patent expiration on the market position of drugs
Author(s) -
Statman Meir
Publication year - 1981
Publication title -
managerial and decision economics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.288
H-Index - 51
eISSN - 1099-1468
pISSN - 0143-6570
DOI - 10.1002/mde.4090020201
Subject(s) - expiration , profitability index , drug prices , expiration date , position (finance) , competition (biology) , business , monetary economics , economics , market share , marketing , medicine , finance , chemistry , ecology , food science , respiratory system , biology
A sample of 12 major drugs is used to examine the effect of patent expiration on market shares and prices in the US market. The results indicate that patent expiration has, at least for the first few years, only a small effect on the market shares and prices of the original drags. Efforts to increase price competion in drug markets, however, may change this situation in the future. The declining effective patent period for drugs and the declining profitability of drug innovation raise the concern that efforts to foster price competition might result in lower levels of innovation.