Patent Quality with Open Innovation Breadth in Clean Technology Firms: Field Study

Authors

  • Louis T. Petit Faculty of Economics and Management, Université de Strasbourg, Strasbourg, Grand Est, France Author
  • Camille Dubois Faculty of Economics and Management, Université de Strasbourg, Strasbourg, Grand Est, France Author

Keywords:

Open Innovation, Patent Quality, Clean Technology, Knowledge Recombination, Field Study

Abstract

The transition toward a sustainable global economy relies heavily on the rapid development and deployment of clean technologies. Due to the inherent complexity and interdisciplinary nature of these technologies, firms frequently engage in open innovation practices to source knowledge externally. This paper investigates the relationship between open innovation breadth and patent quality within the clean technology sector. Using a comprehensive field study involving archival patent data and in-depth survey metrics from a cross-section of clean technology enterprises, this research explores how the diversity of external knowledge sources impacts the technological value of resulting patents. The findings reveal an inverted U-shaped relationship, suggesting that while initial increases in open innovation breadth enhance patent quality by providing diverse recombinant materials, excessive breadth leads to integration challenges and cognitive overload that ultimately degrade patent quality. The study contributes to the literature on innovation management by providing empirical evidence from a critical, fast-growing sector and offers actionable insights for research and development managers aiming to optimize their external search strategies. The paper concludes by discussing the theoretical implications for recombinant search theory and outlines potential avenues for future research in open innovation dynamics.

References

1. Perotti, P.; Tsoligkas, F.; Wang, K. Greening Under Pressure: Climate Change Exposure and Eco-Innovation. Bus. Strategy Environ. 2025, 1–30.

2. Sanni, M. Drivers of eco-innovation in the manufacturing sector of Nigeria. Technol. Forecast. Soc. Change 2018, 131, 303–314.

3. Environmental Policy Innovation Center (EPIC). Endless Prairie Buffalo Project; Environmental Policy Innovation Center: Washington, DC, USA, 2025; Available online: https://www.policyinnovation.org/endless-prairie-buffalo-project (accessed on 9 October 2025).

4. Han, L.; Cao, J.; He, J. The Internal Logic and Implementation Path of Digital Economy Enabling Urban-Rural Integration. Southwest Financ. 2024, 42–53.

5. Sun, Y.; Zhang, D.; Liang, Y.; Ding, J. Value Realization of Ecological Products and Integrated Urban-rural Development: An Empirical Study Based on Urban-rural Integrated Development Pilot Zones. Stat. Res. 2024, 41, 87–99.

6. Xu, D.; Yang, F.; Yu, L.; Zhou, Y.; Li, H.; Ma, J.; Huang, J.; Wei, J.; Xu, Y.; Zhang, C.; et al. Quantization of the Coupling Mechanism between Eco-environmental Quality and Urbanization from Multisource Remote Sensing Data. J. Clean. Prod. 2021, 321, 128948.

7. Wang, P.; Guo, B.; Sun, Z. Sustainable Urban-Rural Symbiosis in China: A Study from the Symbiosis Theory Perspective on Level Measurement and Spatial Difference Analysis. Sustainability 2025, 17, 2790.

8. Qian, Z.; Qin, X. The Theoretical Basis, Value Implication and Practical Dimension of the Integrated Development of Urban and Rural Ecology. Acad. J. Zhongzhou 2023, 43–48.

9. Zhang, F.; Qiao, C. “Fracture” and “Reconstruction” of Urban and Rural Interests Pattern Based on Factor Allocation: Literature Review and Prospect. Issues Agric. Econ. 2019, 40, 85–93.

10. Tang, Z. Coupling Research on the Quality of Rural Migrant Population and the Ecological Environmental Carrying Capacity of Migrant-Receiving Areas from the Perspective of Urban-Rural Integration. Agric. Econ. 2019, 70–72.

11. Wang, Q.; Liu, X.; Li, Y. Spatial Structure, City Size and Innovation Performance of Chinese Cities. China Ind. Econ. 2021, 5, 114–132.

12. Groom, B.; Venmans, F. The social value of offsets. Nature 2023, 619, 768–773.

13. Balmford, A.; Keshav, S.; Venmans, F.; Coomes, D.; Groom, B.; Madhavapeddy, A.; Swinfield, T. Realizing the social value of impermanent carbon credits. Nat. Clim. Change 2023, 13, 1172–1178.

14. Börner, J.; Wunder, S.; Wertz-Kanounnikoff, S.; Tito, M.R.; Pereira, L.; Nascimento, N. Direct conservation payments in the Brazilian Amazon: Scope and equity implications. Ecol. Econ. 2010, 69, 1272–1282.

15. Environmental Protection Agency (EPA). Water Quality Trading; Environmental Protection Agency: Washington, DC, USA, 2025. Available online: https://www.epa.gov/npdes/water-quality-trading (accessed on 5 November 2025).

16. Penazzi, S.; Accorsi, R.; Manzini, R. Planning Low Carbon Urban-Rural Ecosystems: An Integrated Transport Land-Use Model. J. Clean. Prod. 2019, 235, 96–111.

17. Tang, C.; Lu, X.; Lei, J.; Sun, W. Characteristics and Formation Mechanism of Urban-rural Multidimensional Spatial Conflict in Metropolitan Fringe: Take Zhuanxi Village in Shaoguan City as an Example. Econ. Geogr. 2022, 42, 79–89.

18. Su, C.; Li, Z. Does the Digital Economy Promote Urban-Rural Integration? Empirical Research Based on 285 Prefectural Cities in China. Comp. Econ. Soc. Syst. 2023, 27–39.

19. Fang, C. Theoretical Analysis on the Mechanism and Evolution Law of Urban-Rural Integration Development. Acta Geogr. Sin. 2022, 77, 759–776.

20. Croci, E.; Lucchitta, B.; Cusa, M. Biodiversity credits schemes: A comparative analysis. J. Clean. Prod. 2025, 523, 146382.

21. Barbier, E.B. Capitalizing on Nature: Ecosystems as Natural Assets; Cambridge University Press: Cambridge, UK, 2011.

22. Wang, F.; Mao, X. Integration of Urban and Rural Development from the Perspective of Environmental Equity: Value Review and Direction Choice. J. Agro-Forest. Econ. Manag. 2021, 20, 686–692.

23. Lu, F.; Yoon, S.J. Spatiotemporal Evolution and Spillover Effects of Tourism Industry and Inclusive Green Growth Coordination in the Yellow River Basin: Toward Sustainable Development. Sustainability 2025, 17, 11372.

24. Zhou, H.; Liu, X.; Kong, F. How Can the Digital Economy Promote the Urban-rural Integration?—An Empirical Analysis based on 287 Prefecture-level Cities. J. Southwest Univ. (Soc. Sci. Ed.) 2025, 51, 104–115+303.

25. Han, X.; Hu, Y.; Ma, Z. Coupling and Coordinated Development of Rural Revitalization, New Urbanization and Ecological Environment: An Empirical Study Based on the Yellow River Basin. Stat. Decis. 2023, 39, 122–127.

Downloads

Published

2026-05-28

Issue

Section

Articles