This was particularly true for "troll" plaintiffs. Non-practicing entities win fewer than a quarter of their cases nationwide. But in East Texas and Delaware, they win more than 40 percent of their cases.
James Bessen does research on technology and innovation at Boston University School of Law. He is the co-author of Patent Failure: How Judges, Bureaucrats, and Lawyers Put Innovators at Risk. You can follow him on Twitter.