The Study of the Knowledge Spillover pattern in China through patents in USPTO
Date Issued
2015
Date
2015
Author(s)
Chen, Jieling
Abstract
This thesis studies the pattern of knowledge spillover in China based on patent citation. The data used are patents granted by USPTO to inventors based in China with the application year dated between 2000 and 2012. Only patents falling under the categories of G and H of the International Patent Classification, where the Chinese patents are concentrated, are investigated. The theme of study is: How patent citation is affected by the status of the patent owner (assignee), the location of the inventor, and the technology scope of the patent. The empirical results show that all three factors matter, but they are inter-related and their effects may overlap. In general, patents assigned to business firms are more likely to be cited compared to patents assigned to government and academic institutions, especially patents belong to non-Chinese companies, including those based in U.S., Taiwan, and other countries.Among different technological fields, patents in the categories of G08, H01, H05 are most likely to receive citations, while G01 and H03 are least likely. Patents invented in Greater Beijing area and Yangtze River Delta are more likely to be cited than patents invented in Pearl River Delta. Moreover, the probability to receive a citation is positively related to the number of citations of the original patent and the age of the patent. A patent is more likely to be cited by another patent owned by the same kind of assignees (business, academics, or institutions), invented in the same location, or falling in the same technology category, than otherwise.
Subjects
Patent
Patent Citation
Knowledge Spillover
Assignee
Inventor location
Technological Scope.
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-104-R02323024-1.pdf
Size
23.54 KB
Format
Adobe PDF
Checksum
(MD5):ede0f89ef30a0191f64a392a5e1d3dd7