Now that Aereo has launched its antenna TV-over-the-internet service it can devote some attention to its legal issues, and today countersued the TV networks suing it (Fox, PBS, Univision, WPIX and WNET) in the U.S. District Court in Manhattan. It's already filed another suit against Disney, CBS NBCUniversal and Telemundo, as they wrangle over whether or not its scheme -- using an individual "microantenna" for each subscriber and streaming to that person over the internet, as long as they're in the broadcasting area -- violates t