IDEAS home Printed from https://ideas.repec.org/a/eee/iepoli/v51y2020ics0167624518300131.html
   My bibliography  Save this article

Effects of early patent publication on knowledge dissemination: Evidence from U.S. patent law reform

Author

Listed:
  • Okada, Yoshimi
  • Nagaoka, Sadao

Abstract

In order to assess effects of early publication of patent applications on the dissemination of the disclosed technological knowledge, this study examines the impacts of the 18-month pre-grant publication system introduced in the United States in 2000. It focuses on the variations of the applicant non-self-citations driven by the actual policy reform, unlike prior studies, after demonstrating that including examiner citations causes a systematic bias toward early knowledge flows to subsequent inventors. It finds that the citation probability rose significantly in early stage following the early publication, which shows that the reform accelerated knowledge diffusion significantly. Furthermore, the effect was stronger in the fields with longer publication lag before the reform (strongest in Computers & Communications, followed by in Drugs and Medicals). The reform looks to have helped inventors to recognize potential duplication and follow-on invention opportunities earlier. In addition, the publications of eventually abandoned patent applications, which had not been published before the reform, are found to have become significant new knowledge sources.

Suggested Citation

  • Okada, Yoshimi & Nagaoka, Sadao, 2020. "Effects of early patent publication on knowledge dissemination: Evidence from U.S. patent law reform," Information Economics and Policy, Elsevier, vol. 51(C).
    • Handle: RePEc:eee:iepoli:v:51:y:2020:i:c:s0167624518300131
    DOI: 10.1016/j.infoecopol.2020.100852
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0167624518300131
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.infoecopol.2020.100852?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Juan Alcácer & Michelle Gittelman, 2006. "Patent Citations as a Measure of Knowledge Flows: The Influence of Examiner Citations," The Review of Economics and Statistics, MIT Press, vol. 88(4), pages 774-779, November.
    2. Adam B. Jaffe & Manuel Trajtenberg & Rebecca Henderson, 1993. "Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations," The Quarterly Journal of Economics, Oxford University Press, vol. 108(3), pages 577-598.
    3. Ricardo J. Caballero & Adam B. Jaffe, 1993. "How High Are the Giants' Shoulders: An Empirical Assessment of Knowledge Spillovers and Creative Destruction in a Model of Economic Growth," NBER Chapters, in: NBER Macroeconomics Annual 1993, Volume 8, pages 15-86, National Bureau of Economic Research, Inc.
    4. Johnson, Daniel K N & Popp, David, 2003. "Forced Out of the Closet: The Impact of the American Inventors Protection Act on the Timing of Patent Disclosure," RAND Journal of Economics, The RAND Corporation, vol. 34(1), pages 96-112, Spring.
    5. Alcácer, Juan & Gittelman, Michelle & Sampat, Bhaven, 2009. "Applicant and examiner citations in U.S. patents: An overview and analysis," Research Policy, Elsevier, vol. 38(2), pages 415-427, March.
    6. Bronwyn H. Hall & Adam B. Jaffe & Manuel Trajtenberg, 2001. "The NBER Patent Citation Data File: Lessons, Insights and Methodological Tools," NBER Working Papers 8498, National Bureau of Economic Research, Inc.
    7. Joshua S. Gans & David H. Hsu & Scott Stern, 2008. "The Impact of Uncertain Intellectual Property Rights on the Market for Ideas: Evidence from Patent Grant Delays," Management Science, INFORMS, vol. 54(5), pages 982-997, May.
    8. Adam B. Jaffe & Michael S. Fogarty & Bruce A. Banks, 1998. "Evidence from Patents and Patent Citations on the Impact of NASA and Other Federal Labs on Commercial Innovation," Journal of Industrial Economics, Wiley Blackwell, vol. 46(2), pages 183-205, June.
    9. Aoki, Reiko & Spiegel, Yossi, 2009. "Pre-grant patent publication and cumulative innovation," International Journal of Industrial Organization, Elsevier, vol. 27(3), pages 333-345, May.
    10. Cotropia, Christopher A. & Lemley, Mark A. & Sampat, Bhaven, 2013. "Do applicant patent citations matter?," Research Policy, Elsevier, vol. 42(4), pages 844-854.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Kyle HIGHAM & NAGAOKA Sadao, 2022. "Language Barriers and the Speed of Knowledge Diffusion," Discussion papers 22074, Research Institute of Economy, Trade and Industry (RIETI).

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Okada, Yoshimi & 岡田, 吉美 & Nagaoka, Sadao & 長岡, 貞男, 2015. "Effects of early patent disclosure on knowledge dissemination: evidence from the pre-grant publication system introduced in the United States," IIR Working Paper 15-12, Institute of Innovation Research, Hitotsubashi University.
    2. Hur, Wonchang & Oh, Junbyoung, 2021. "A man is known by the company he keeps?: A structural relationship between backward citation and forward citation of patents," Research Policy, Elsevier, vol. 50(1).
    3. Adam B. Jaffe & Gaétan de Rassenfosse, 2017. "Patent citation data in social science research: Overview and best practices," Journal of the Association for Information Science & Technology, Association for Information Science & Technology, vol. 68(6), pages 1360-1374, June.
    4. Po‐Hsuan Hsu & Hai‐Ping Hui & Hsiao‐Hui Lee & Kevin Tseng, 2022. "Supply chain technology spillover, customer concentration, and product invention," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 31(2), pages 393-417, April.
    5. Aditi Mehta & Marc Rysman & Tim Simcoe, 2006. "Identifying the Age Profile of Patent Citations," Boston University - Department of Economics - Working Papers Series WP2006-022, Boston University - Department of Economics.
    6. Michael Roach & Wesley M. Cohen, 2012. "Lens or Prism? Patent Citations as a Measure of Knowledge Flows from Public Research," NBER Working Papers 18292, National Bureau of Economic Research, Inc.
    7. Gao, Xue & Rai, Varun, 2023. "Knowledge acquisition and innovation quality: The moderating role of geographical characteristics of technology," Technovation, Elsevier, vol. 125(C).
    8. Andrew Eckert & Corinne Langinier, 2014. "A Survey Of The Economics Of Patent Systems And Procedures," Journal of Economic Surveys, Wiley Blackwell, vol. 28(5), pages 996-1015, December.
    9. Joëlle Noailly & Victoria Shestalova, 2013. "Knowledge spillovers from renewable energy technologies, Lessons from patent citations," CPB Discussion Paper 262, CPB Netherlands Bureau for Economic Policy Analysis.
    10. Joelle Noailly & Victoria Shestalova, 2013. "Knowledge Spillovers from Renewable energy Technologies, Lessons from patent citations," CIES Research Paper series 22-2013, Centre for International Environmental Studies, The Graduate Institute.
    11. Dechezlepretre, Antoine & Martin, Ralf & Mohnen, Myra, 2014. "Knowledge spillovers from clean and dirty technologies," LSE Research Online Documents on Economics 60501, London School of Economics and Political Science, LSE Library.
    12. David Popp, 2004. "International Innovation and Diffusion of Air Pollution Control Technologies: The Effects of NOX and SO2 Regulation in the US, Japan, and Germany," NBER Working Papers 10643, National Bureau of Economic Research, Inc.
    13. Ashtor, Jonathan H., 2022. "Modeling patent clarity," Research Policy, Elsevier, vol. 51(2).
    14. Kyle HIGHAM & NAGAOKA Sadao, 2022. "Language Barriers and the Speed of Knowledge Diffusion," Discussion papers 22074, Research Institute of Economy, Trade and Industry (RIETI).
    15. Satoshi Yasukawa & Shingo Kano, 2014. "Validating the usefulness of examiners’ forward citations from the viewpoint of applicants’ self-selection during the patent application procedure," Scientometrics, Springer;Akadémiai Kiadó, vol. 99(3), pages 895-909, June.
    16. Kenneth G Huang & Jiatao Li, 2019. "Adopting knowledge from reverse innovations? Transnational patents and signaling from an emerging economy," Journal of International Business Studies, Palgrave Macmillan;Academy of International Business, vol. 50(7), pages 1078-1102, September.
    17. Alessandra Scandura, 2019. "The role of scientific and market knowledge in the inventive process: evidence from a survey of industrial inventors," The Journal of Technology Transfer, Springer, vol. 44(4), pages 1029-1069, August.
    18. Inchae Park & Yujin Jeong & Byungun Yoon, 2017. "Analyzing the value of technology based on the differences of patent citations between applicants and examiners," Scientometrics, Springer;Akadémiai Kiadó, vol. 111(2), pages 665-691, May.
    19. Heide Fier & Andreas Pyka, 2014. "Against the one-way-street: analyzing knowledge transfer from industry to science," The Journal of Technology Transfer, Springer, vol. 39(2), pages 219-246, April.
    20. Carlos J. Serrano, 2010. "The dynamics of the transfer and renewal of patents," RAND Journal of Economics, RAND Corporation, vol. 41(4), pages 686-708, December.

    More about this item

    Keywords

    Disclosure; Knowledge flow; Patent; Pre-grant publication; Applicant citation; Examiner citation;
    All these keywords.

    JEL classification:

    • O33 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Technological Change: Choices and Consequences; Diffusion Processes
    • O31 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Innovation and Invention: Processes and Incentives
    • O38 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Government Policy
    • O34 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Intellectual Property and Intellectual Capital
    • D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search; Learning; Information and Knowledge; Communication; Belief; Unawareness
    • L15 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Information and Product Quality

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:iepoli:v:51:y:2020:i:c:s0167624518300131. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.elsevier.com/locate/inca/505549 .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.