The objective of this article is to examine the diffusion of spillovers within technological cooperation. More precisely, we shall ask to what extent permanent geographic proximity, defined, as co-location by the geography of innovation, is really necessary to benefit from spillovers when agents...

The aim of this paper is to explore the heterogeneity in R&D collaborations and of their determinants and motives. Using a recent French survey on research and innovation relations, we first show the heterogeneity of such relations thanks to a typology of their characteristics: their nature...

We analyze the incentives to disclose intermediate research results. We find that despite the help that disclosure can give to a rival, the leading innovator sometimes chooses to disclose. Disclosure signals commitment to the research project, which may induce a rival to exit. With weak product...

The commercial value of basic knowledge depends on the arrival of follow-up developments mostly from outside the boundaries of the inventing firm. Private returns would depend on the extent the inventing firm internalizes these follow-up developments. Such internalization is less likely to occur...

It is shown that spillovers can enhance private returns to innovation if they feed back into the dynamic research of the original inventor (Internalized spillovers), but will always reduce private returns, if the original inventor does not benefit from the advancements other inventors build into...