To those who follow patent news, IP Nav is an infamous company. Some websites have called it “the most notorious patent troll in America,” and its co-founder, Erich Spangenberg, is known as the “poster boy for litigious patent assertion companies.” So, when IP Nav’s other co-founder, David Pridham, realized that Spangenberg’s preferred business model was not in alignment with his own hopes for the patent system, he broke away from IP Nav and founded his own company, Dominion Harbor Group, which looks to “license IP in a responsible way.”