Ganglmair, Bernhard; Robinson, W. Keith; Seeligson, Michael - 2022 - This version: April 2, 2022
We document the occurrence of process claims in granted U.S. patents over the last century. Using novel data on the type of independent patent claims, we show an increase in the annual share of process claims of about 25 percentage points (from below 10% in 1920). This rise in process intensity...
