Nishimura, Junichi; Okada, Yosuke - In: Research Policy 43 (2014) 7, pp. 1250-1263
We examine how R&D portfolios of drug pipelines affect pharmaceutical licensing, controlling firm size, diversity, and … between 1997 and 2007. We pay special attention to stage-specific licensing by dividing the innovation process into early and … pipelines significantly affect stage-specific licensing, inducing portfolio effect that lead to smoothing drug pipelines across …