It's no secret that over-the-air broadcasters are less than thrilled with Aereo's live TV service. Customers pay annually to receive a dedicated antenna at one of Aereo's hubs and DVR functionality, all of which exists in the cloud and streams to users. Sounds pretty okay, right? Not if you're a broadcast TV outlet, apparently: The channels that Aereo carries show licensed content, and the companies that broadcast said content want their licensing cut.

Of course, it doesn't help that the broadcasters in this story are the Goliath to Aereo's David. Aereo only operates in a handful of markets -- mostly cities, where using an antenna for OTA broadcasts is often unreliable -- and the company is offering a unique service. It is, of course, growing, but remains nowhere near the size of the media giants it re-broadcasts.

The United States Department of Justice, however, argues that, regardless of Aereo's size, it's violating copyright law in re-broadcasting content from the likes of NBC, CBS, ABC, Fox and other OTA signals (read our explainer right here). Whether the US Supreme Court agrees with that assessment is another question altogether -- and it's one that's set to be answered in the not-so-distant future. The case begins on April 22nd, in just five days.