"What is a patent troll?" said Stephen Wren, an inventor from St. Louis, Missouri. "According to some, a patent troll is a firm who licenses patents they do not themselves commercialize. Yet, many of the large firms who are most critical of the practice do it themselves."
Many large companies patent license technologies, which they then do not use, as a way to make money, Wren argued. "Rather hypocritical isn't it?" he said in an e-mail. "All this talk of 'patent trolls' is ... fabricated by large multinationals as a diversion away from the real issue -- that they have no valid defense against charges they are using other parties