Do Patent Trolls Exist? Two Studies Reach Different Conclusions 29/11/2018 by Steven Seidenberg for Intellectual Property Watch Leave a Comment They are called many things. Patent Assertion Entities (PAEs), Non-Practicing Entities (NPEs), Patent Trolls, and on occasion, names not suitable in polite company. They often are accused of harming innovation and the economy, while providing nothing useful in return. They, less often, are said to promote innovation, in part by helping small inventors monetize their discoveries. Two recent academic studies attempt to shed light on this dispute, but their findings seem contradictory – at least at first.