Nishimura, Junichi; Okada, Yosuke - Institute of Economic Research, Hitotsubashi University - 2010
We examine how R&D portfolios of drug pipelines affect pharmaceutical licensing, controlling firm size, diversity, and … pharmaceutical companies between 1997 and 2007. We pay special attention to stage-specific licensing by dividing the innovation … significantly affect stage-specific licensing. Particularly, the state of drug pipelines is leveled off by license-outs at the early …