farrellj writes "Dovden Investments, labelled as a Patent Troll by many, got more than they bargained for when they went after Ottawa developer Larry Dunkelman. Mr. Dunkelman wrote BusBuddy, an app that takes GPS and scheduling data from OC Transpo, the local city bus service, and predicts when the bus you are waiting for will actually arrive. But when Dovden came along and asked for $10,000, as a 'licensing' fee, Dunkelman got angry, and decided to fight. 'They claim to have patented the method of using GPS location on vehicles to determine when they will arrive at a certain place,' Dunkelman said. 'This applies to buses, package delivery, airplanes, trains - any business that employs a fleet of vehicles in which they track their location to arrive at a certain place, is open to this patent troll.' Dunkelman hired an intellectual property lawyer and started chipping away at the company's claims. Dovden has since discontinued the suit and are now being chased by Dunkelman and his lawyer for legal costs."