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Inventing by combining pre-existing technologies: Patent evidence on learning and fishing out

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  • Clancy, Matthew S.

Abstract

I develop a model of innovation where new technologies are combinations of pre-existing technological components. The model captures two opposing forces. The best ideas are used up (knowledge is exhaustible). However, as firms learn which technologies can be combined, new ideas become feasible (knowledge accumulates). I test the model with more than 80 years of US patent data. Technological components are proxied by 13,517 patent office technology classifications. These are reused and recycled in 10,000 distinct three-component sets. Consistent with a learning/fishing-out dynamic, I show patenting in one set of components is correlated with a subsequent increase in similar patents (sharing two of three components), but a subsequent decrease in identical patents (sharing all three components). I use patent renewal data to show my results are not driven by changes in demand for various technology bundles. My results suggest the positive impact of learning on subsequent patenting is larger than the negative impact of fishing out.

Suggested Citation

  • Clancy, Matthew S., 2018. "Inventing by combining pre-existing technologies: Patent evidence on learning and fishing out," Research Policy, Elsevier, vol. 47(1), pages 252-265.
    • Handle: RePEc:eee:respol:v:47:y:2018:i:1:p:252-265
    DOI: 10.1016/j.respol.2017.10.015
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    Cited by:

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    4. Zhang, Dongyang & Guo, Rui & He, Xiaodan, 2022. "How does the exclusive license stimulate firm’s subsequent innovation? The role of innovation financial input," Research in International Business and Finance, Elsevier, vol. 60(C).
    5. Deyu Li & Floor Alkemade & Koen Frenken & Gaston Heimeriks, 2023. "Catching up in clean energy technologies: a patent analysis," The Journal of Technology Transfer, Springer, vol. 48(2), pages 693-715, April.
    6. Yun, Siyeong & Song, Kisik & Kim, Chulhyun & Lee, Sungjoo, 2021. "From stones to jewellery: Investigating technology opportunities from expired patents," Technovation, Elsevier, vol. 103(C).
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    8. Klüppel, Leonardo & Knott, Anne Marie, 2023. "Are ideas being fished out?," Research Policy, Elsevier, vol. 52(2).
    9. Clancy, Matthew S., 2018. "How deep are the roots of agricultural innovation? Evidence from patents," 2018 Annual Meeting, August 5-7, Washington, D.C. 274377, Agricultural and Applied Economics Association.

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    More about this item

    Keywords

    Innovation; Patents; Combinatorial growth; Spillovers; R&D;
    All these keywords.

    JEL classification:

    • O31 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Innovation and Invention: Processes and Incentives
    • O34 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Intellectual Property and Intellectual Capital

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