Brouwer, Erik; Kleinknecht, Alfred; Mohnen, Pierre; … - Centre Interuniversitaire de Recherche en Analyse des … - 2001
reexamined the causality direction between R&D and patents, using data on contemporaneous and four-year lagged patent … of the count data for patent applications. We find that patents Granger-cause R&D in all specifications. One additional … patent increases R&D four years later by 7.5%. The reverse causality from R&D to patents vanishes as soon as we depart in one …