This is an entertaining and timeless story. "Trolling" is, alas, inevitable due to the transferable nature of patent rights. (Troll-like cases are perhaps 1/20 of patent infringements filed.) But, the victims of trolling are not entirely without blame -- small inventors and start ups are frequently told to "scram" by large companies when they are informed of their potential infringement. Without a bankroll, contingency litigation is the only option for the small guy.