The America Invents Act of 2011 (“AIA”) created a robust administrative system—the Patent Trial and Appeal Board (“PTAB”)—for challenging the validity of granted patents. Congress determined that administrative correction of errors made in initial patent grants could be cheaper and...

This essay describes the growing public domain of inventions associated with drugs and medicine, and geographies associated with identifiable shifts in the balance of innovation that may be especially favorable for promoting wider access to socially useful technologies. To do so, it departs from...