In this paper we have used data envelopment analysis (DEA) and econometric models to analyse the impact of research and development and innovation on relative efficiency and productivity change and firm performance in Indian pharmaceutical industry (IPI) between 1998 and 2007 which covers the...

Patent-based measures are frequently used as indicators in empirical research on innovation and technological change. Currently, there is little evidence as to what extent patent-based indicators relate to product market outcomes. Using a unique dataset that links outcomes from product...