TY  - BOOK
AU  - Williams,Heidi L.
ED  - National Bureau of Economic Research.
TI  - How Do Patents Affect Research Investments?
T2  - NBER working paper series
PY  - 2017///
CY  - Cambridge, Mass.
PB  - National Bureau of Economic Research
N1  - January 2017; Hardcopy version available to institutional subscribers
N2  - While patent systems have been widely used both historically and internationally, there is nonetheless a tremendous amount of controversy over whether patent systems - in practice - improve the alignment between private returns and social contributions.  In this paper, I describe three parameters - how the disclosure function affects research investments, how patent strength affects research investments in new technologies, and how patents on existing technologies affect follow-on innovation - needed to inform the question of how patents affect research investments, and review the available evidence which has attempted to empirically estimate these parameters
UR  - https://www.nber.org/papers/w23088
UR  - http://dx.doi.org/10.3386/w23088
ER  -