Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/97376 
Year of Publication: 
2014
Series/Report no.: 
cemmap working paper No. CWP16/14
Publisher: 
Centre for Microdata Methods and Practice (cemmap), London
Abstract: 
We analyze cross-country trends in technological progress over the period of 1980-2011 by examining citations data from almost 4 million utility patents granted by the US Patent and Trademark Office (USPTO). Our estimation results on patent quality and distance to the knowledge frontier reveal the following stylized facts. The emerging Asian economies of Korea, Taiwan and China have indeed achieved substantial catch-up towards the technology frontier. In the case of Korea and Taiwan, progress has been made in terms of patent quality as well as distance to the frontier. Chinese patents are of higher quality now than before but Chinese inventors have yet to reduce the citation lag relative to the frontier. In contrast, advanced economies of Europe and Japan have displayed steady decline in their patent quality. Finally, the US has maintained, and in some cases strengthened, its position as the world technology frontier
Subjects: 
Innovation
patent citation
patent quality
distance to the knowledge frontier
international comparison
JEL: 
O33
O57
Persistent Identifier of the first edition: 
Document Type: 
Working Paper

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