Using over 200,000 U.S. patent citations, we test whether knowledge transfers in the transportation sector are sensitive to distance, and whether that sensitivity has changed over time. Controlling for self-citation by inventor, assignee and examiner, multivariate regression analysis shows that...

Drug patents are distorted. Unlike most other inventors, drug inventors must complete years of testing to the government’s specifications and seek government approval to commercialize their inventions. All the while, the patent term runs. When a drug inventor finally launches a medicine that...

Developing nations are challenged to strike a balance between their patent obligations as members of the World Trade Organisation (WTO) and their drug pricing strategies. The Brazilian approach to pharmaceutical price negotiations has been strikingly effective. Describing the context of the...

Developing nations are challenged to strike a balance between their obligations as members of the World Trade Organization (WTO) and their drug pricing strategies. The Brazilian approach to pharmaceutical price negotiations has been strikingly effective. Describing the context of the Brazilian...

This paper examines the location of innovations within pharmaceutical technology, using U.S. patent citation data to trace the knowledge flows over time. It is clear that knowledge clustering is certainly present. Our study utilizes multivariate left-censored Tobit regression analysis to control...

Drug patents are distorted. Unlike most other inventors, drug inventors must complete years of testing to the government’s specifications and seek government approval to commercialize their inventions. All the while, the patent term runs. When a drug inventor finally launches a medicine that...