An extended quality-driven efficiency-adjusted data envelopment analysis (QE-DEA) method is developed to measure the performance of service units. Performance is measured based on efficiency and users’ satisfaction. The extended QE-DEA method identifies as benchmarks only units that are...

This paper examines whether patents increase the geographic reach of the market for ideas. By employing a dataset of 25,127 US patents traded between US located firms, we find that patents sold during application phase are less likely to be traded outside the seller‟s state than patents that...