practical, non-research-based use at the time patent protection is sought. The fear is that an early-stage patent on a research … innovation. Yet, denying patents on research inputs can frustrate patent law’s broad goal to protect and promote advances in … patent.” This regime would allow inventors to obtain patents on research inputs and extract their full value through …

effect of spillovers on research productivity of firms exceeds the structural effect because it includes an active learning … expenditures and internal research expenditures. The findings are consistent with the view that learning expenditures transmit the …