Kwon, Soonwoo; Lee, Jihong; Sokbae 'Simon' Lee - Centre for Microdata Methods and Practice (CEMMAP) - 2014
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 Oce (USPTO). Our estimation results on patent quality and distance to the knowledge frontier reveal the...