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 competitors in R&D and product markets. The data collected comprises 329 license-outs and 434 license-ins closed by 54 Japanese pharmaceutical companies between 1997 and 2007....