Coining the useful term "patent monetization entity" (as a replacement for "patent troll," "nonpracticing entity," and "patent assertion entity" -- all terms with either social or technical issues), the scholars have concluded that "lawsuits filed by patent monetizers have increased significantly over the five-year period." Not only has the number of cases increased, but so has the proportion of these non-product-related litigants, from 22 percent to 40 percent of cases filed. They found that four of the top five patent litigants in America exist solely to file lawsuits.