“…Another concern is that there were significant challenges and costs associated with obtaining a patent, which might have placed recently-landed foreigners with a limited understanding of English at a disadvantage. 49 With these caveats in mind, we estimate the effect of immigration on the rate of patenting by 48 In fact, recent evidence suggests that immigrants coming from Western European countries, were, if anything, more skilled than the average of the home-country's population (Wegge, 2002, Long and Ferrie, 2013, Abramitzky and Boustan, 2015. 49 While the Patent Act of 1793 might have benefited foreigners by removing the requirement of a thorough oral examination as part of the process of granting patents, the cost of a patent was $35 in 1861, which corresponds to about $891 in 2010 USD.…”