Bitte verwenden Sie diesen Link, um diese Publikation zu zitieren, oder auf sie als Internetquelle zu verweisen: https://hdl.handle.net/10419/331586 
Erscheinungsjahr: 
2025
Schriftenreihe/Nr.: 
CESifo Working Paper No. 12120
Verlag: 
Munich Society for the Promotion of Economic Research - CESifo GmbH, Munich
Zusammenfassung: 
This study examines the impact of Conference of the Parties (COP) summits on innovation using an event study framework. Innovation is measured by patent grants, distinguishing between the total number of patents and the number of patents in environmental technologies, based on the World Intellectual Property Organization classification. We find that hosting a COP summit leads to a significant and lasting increase in the total number of patent grants, with an average rise of about 35 percent per year from the seventh to the thirteenth year after the summit, but has only a limited effect on the number of patent grants in environmental technologies. We further examine potential heterogeneity in the effects of COP summits by analyzing the impact of hosting a summit on patents in environmental technology compared to other technologies separately for each host country. The results suggest that while hosting a COP summit generally promotes environmental patenting, the effect is negative in some countries. We discuss possible reasons, including diminishing returns in green innovation and the influence of large industrial emitters. The findings are robust across alternative estimators, the inclusion of control variables, and different measures of patenting activity.
Schlagwörter: 
COP summits
environmental technologies
patents
innovation
event study
JEL: 
O34
O44
Q54
Dokumentart: 
Working Paper
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