A comparative study of patent counts by the inventor country and the assignee country

  • Sung H
  • Wang C
  • Chen D
 et al. 
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Abstract

This paper compared and contrasted patent counts by examining the
inventor country and the assignee country. An empirical analysis of the
patent data revealed how assignment principles (i.e. by the inventor
country and by the assignee county) and counting methods (i.e. whole
counts, first country and fractional counts) generate different results.
Quadrant diagrams were utilised to present the patent data of the 33
selected countries. When countries had similar patent counts by inventor
country with patent counts by assignee country, all the countries
allocated along the diagonal line in the quadrant diagram were developed
countries. When countries had more patent counts by inventor than by
assignee, developed countries were more likely to sit in the right upper
section of the quadrant diagram, while more developing countries were
situated in the left lower section. Countries with higher patent counts
by assignee than by inventor were more likely to be tax havens. A
significant contribution of this paper resides in the recommendation
that patent counts be analysed using both the inventor country and the
assignee country at the same time if meaningful implications from patent
statistics are to be obtained.

Author-supplied keywords

  • Assignee country
  • Inventor country
  • Patent counts
  • Patentometrics

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