Patent infringement lawsuits filed by non-practicing entities, also known as pantent trolls, continue to rise in the U.S. Some argue that patent trolls wait until another party brings a product to market and then jump out from “under a bridge” to a demand a toll (a license fee or royalty).
According to Patent Freedom, the top five patent trolls are Intellectual Ventures, Interdigital, Round Rock Research LLC, Wisconsin Alumni Foundation and Rockstar Consortium LLC. Additionally, Apple, Samsung, Hewlett Packard, AT&T and Dell are listed as the top five most frequent targets of patent trolls. In fact, Apple reported that it was the target of 92 lawsuits by patent trolls in the U.S. over the last three years.