Footnote:
Nach Informationen von SSRN wurde die ursprüngliche Fassung des Dokuments April 6, 2023 erstellt
Description:
This study seeks to expand on prior research that used USPTO patent data by utilizing data from the Japanese Patent Office (JPO) to investigate the effects of firm age on innovation. Similar to the previous study, we directly measure the degree of recombination of a firm's R&D portfolio, which we refer to as the firm's R&D proximity. Our analysis shows that higher R&D proximity, indicating smaller changes in R&D portfolios, is associated with a greater number of inventions but with lower invention quality. Furthermore, our findings support the mediating role of firm age on innovation, consistent with previous studies based on the US context