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Blue sky through intellectual property protection: quasi-experimental evidence from China's Intellectual Property City Program.

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Title: Blue sky through intellectual property protection: quasi-experimental evidence from China's Intellectual Property City Program.
Authors: Zhang, Hua1 (AUTHOR) nau_zhanghua@126.com, Chen, Zhaoyu1 (AUTHOR) Chenzhaoyu1999@126.com, Li, Xinyan2 (AUTHOR) 17520221151136@stu.xmu.edu.cn, Zhao, Xin3,4 (AUTHOR) zhaoshin_1993@163.com, Vasa, László4 (AUTHOR) laszlo.vasa@ifat.hu
Source: Environment, Development & Sustainability. May2026, Vol. 28 Issue 5, p12459-12504. 46p.
Subject Terms: *Intellectual property, *Air pollution control, *Environmental policy, *Green behavior, *Environmental regulations, *Applied sciences, *Haze
Geographic Terms: China
Abstract: A well-developed intellectual property system is an important backbone for green innovation and technology, which are widely regarded as crucial tools to combat haze pollution and achieve blue sky. Despite China's aggressive launch of the Intellectual Property City Program (IPCP) since 2012 to improve its intellectual property system, there is little evidence on whether and how IPCP affects haze pollution. Compiling a panel dataset of Chinese cities, we employ a difference-in-differences estimator to identify the causal impact of IPCP on haze pollution. We find that IPCP can effectively reduce haze pollution in IPCP cities compared to non-IPCP cities after the IPCP launch. Our instrumented results using ancient academies further support the haze-abatement effect of IPCP. Mechanism tests reveal that this reduction is driven by green innovation effect and resource allocation effect. The effect is pronounced in eastern cities and cities with high degrees of green innovation, marketization and environmental regulation intensity. Our findings provide support for the critical role of powerful IP protection in haze pollution control. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 193284038
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PubTypeId: academicJournal
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  Label: Title
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  Data: Blue sky through intellectual property protection: quasi-experimental evidence from China's Intellectual Property City Program.
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  Data: <searchLink fieldCode="AR" term="%22Zhang%2C+Hua%22">Zhang, Hua</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> nau_zhanghua@126.com</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Zhaoyu%22">Chen, Zhaoyu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> Chenzhaoyu1999@126.com</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Xinyan%22">Li, Xinyan</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> 17520221151136@stu.xmu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhao%2C+Xin%22">Zhao, Xin</searchLink><relatesTo>3,4</relatesTo> (AUTHOR)<i> zhaoshin_1993@163.com</i><br /><searchLink fieldCode="AR" term="%22Vasa%2C+László%22">Vasa, László</searchLink><relatesTo>4</relatesTo> (AUTHOR)<i> laszlo.vasa@ifat.hu</i>
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  Data: <searchLink fieldCode="JN" term="%22Environment%2C+Development+%26+Sustainability%22">Environment, Development & Sustainability</searchLink>. May2026, Vol. 28 Issue 5, p12459-12504. 46p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Intellectual+property%22">Intellectual property</searchLink><br />*<searchLink fieldCode="DE" term="%22Air+pollution+control%22">Air pollution control</searchLink><br />*<searchLink fieldCode="DE" term="%22Environmental+policy%22">Environmental policy</searchLink><br />*<searchLink fieldCode="DE" term="%22Green+behavior%22">Green behavior</searchLink><br />*<searchLink fieldCode="DE" term="%22Environmental+regulations%22">Environmental regulations</searchLink><br />*<searchLink fieldCode="DE" term="%22Applied+sciences%22">Applied sciences</searchLink><br />*<searchLink fieldCode="DE" term="%22Haze%22">Haze</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22China%22">China</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A well-developed intellectual property system is an important backbone for green innovation and technology, which are widely regarded as crucial tools to combat haze pollution and achieve blue sky. Despite China's aggressive launch of the Intellectual Property City Program (IPCP) since 2012 to improve its intellectual property system, there is little evidence on whether and how IPCP affects haze pollution. Compiling a panel dataset of Chinese cities, we employ a difference-in-differences estimator to identify the causal impact of IPCP on haze pollution. We find that IPCP can effectively reduce haze pollution in IPCP cities compared to non-IPCP cities after the IPCP launch. Our instrumented results using ancient academies further support the haze-abatement effect of IPCP. Mechanism tests reveal that this reduction is driven by green innovation effect and resource allocation effect. The effect is pronounced in eastern cities and cities with high degrees of green innovation, marketization and environmental regulation intensity. Our findings provide support for the critical role of powerful IP protection in haze pollution control. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1007/s10668-024-05465-w
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 46
        StartPage: 12459
    Subjects:
      – SubjectFull: Intellectual property
        Type: general
      – SubjectFull: Air pollution control
        Type: general
      – SubjectFull: Environmental policy
        Type: general
      – SubjectFull: Green behavior
        Type: general
      – SubjectFull: Environmental regulations
        Type: general
      – SubjectFull: Applied sciences
        Type: general
      – SubjectFull: Haze
        Type: general
      – SubjectFull: China
        Type: general
    Titles:
      – TitleFull: Blue sky through intellectual property protection: quasi-experimental evidence from China's Intellectual Property City Program.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Zhang, Hua
      – PersonEntity:
          Name:
            NameFull: Chen, Zhaoyu
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            NameFull: Li, Xinyan
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            NameFull: Zhao, Xin
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            NameFull: Vasa, László
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            – D: 01
              M: 05
              Text: May2026
              Type: published
              Y: 2026
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              Value: 1387585X
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              Value: 28
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              Value: 5
          Titles:
            – TitleFull: Environment, Development & Sustainability
              Type: main
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