Measuring innovation in energy technologies: green patents as captured by WIPO's IPC green inventory

Lorena Rivera Leon, Kyle Bergquist, Sacha Wunsch-Vincent and Kunihiko Fushimi

No 44, WIPO Economic Research Working Papers from World Intellectual Property Organization - Economics and Statistics Division

Abstract: We analyze inventions in green energy technologies over the period 2005-2017. We use a novel dataset, making use of the IPC Green Inventory of the World Intellectual Property Organization (WIPO) to analyze four broad categories of green energy technologies including alternative energy production technologies, energy conservation technologies, and green transportation. We use these data to look at how patent families and PCT international patent applications have evolved in this field in recent years. We find that energy innovation-related patenting has first expanded exponentially up until 2013, both in terms of the total number of patent families and PCT international patent applications in green energy technologies. Yet this period of accelerated growth in the number of published green energy patents has been followed by a period of deceleration—even a slow decline. Although most green energy technologies have seen a downward trend in the annual number of patents published since 2012, the decline has been most pronounced in nuclear power generation technologies and alternative energy production technologies. The latter notably include renewable energy technologies, such as solar and wind energy, and fuel cells. In contrast, patents in energy conservation technologies and green transportation technologies have continued to grow, but at a slower pace.

Keywords: Innovation; Intellectual Property; Patents; Energy; Green innovation; Green energy technology; Sustainable development (search for similar items in EconPapers)
JEL-codes: O33 O34 Q01 Q55 (search for similar items in EconPapers)
Date: 2018-09
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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