Aereo is the controversial service that allows users to essentially rent antennas for a low monthly price and have their local channels available streaming live on their portable devices and Mac/PCs. But there has been an important part of the Aereo puzzle missing, and that is going to be completed on Oct. 22.

Broadcast and cable nemesis, Aereo, today announced plans to launch its online television technology across 16 counties in the Chicago area and some Indiana counties on September 13, continuing the company’s nationwide rollout.

What many broadcasters see as an interloper, Aereo, is expanding beyond its original New York City operating area. In a February 25th press release, Aereo announced that it will expand its service to a total of  29 counties across New Jersey, Pennsylvania and Connecticut. To promote the additional service areas, the company is launching a major billboard advertising campaign across NYC.

With a major Supreme Court case brought against it by broadcasters looming, and a preliminary injunction that bans the service from operating in Utah and five other states, Aereo continues to expand its Internet streaming service into new markets across the U.S. The company said it is now in a dozen markets with a 28-channel service, including all major broadcast channels, with plans to expand to 15 or more cities by the end of the year

Whatever the marketplace fate of Aereo—the controversial broadcast TV-via-Internet streaming delivery venture—the company will inevitably become a legal and business school case study about the complexities of digital distribution.

Aereo, the company that captures OTA TV and sells it as a subscription service, is still wrapped in a legal grey area concerning its service, but that has not slowed it down; it is setting its sights on a next phase, a widespread 22-city rollout in the coming months.