How does the global network of research collaboration affect the quality of innovation?

Takashi Iino*, Hiroyasu Inoue, Yukiko U. Saito, Yasuyuki Todo

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


This study examines how research collaboration of firms affects the quality of their innovation outcomes using comprehensive patent data for firms in the world from 1991 to 2010. Identifying research collaboration by co-patenting relationships, we find that research collaboration with other firms, particularly with foreign firms, leads to substantial improvement in innovation quality. We also observe a positive effect of the brokerage in the global network, especially for firms with international collaboration links. These results are applicable to the effect on the quality of innovation achieved individually without any collaboration. Therefore, our findings emphasize the importance of links with a variety of partners, particularly with foreign partners to improve innovation performance. Finally, we find that the collaboration effect is larger in the 2000s than in the 1990s and varies depending on firm size and across countries.

Original languageEnglish
Pages (from-to)5-48
Number of pages44
JournalJapanese Economic Review
Issue number1
Publication statusPublished - 2021 Jan


  • Co-patenting
  • Innovation
  • Network
  • Research collaboration

ASJC Scopus subject areas

  • Economics and Econometrics


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