We report the results of the first comparative study of the determinants and effects of patent oppositions in Europe and of re-examinations on corresponding patents issued in the United States. The analysis is based on a dataset consisting of matched EPO and US patents. Our analysis focuses on...

This study examines the occupational mobility of antebellum immigrants as they entered the U.S. White collar, skilled, and semi-skilled immigrants left unskilled jobs more rapidly after arrival than farmers and unskilled workers. British and German immigrants fared better than the Irish;...