It was bound to happen, and today it’s official: Craigslist is countersuing eBay, claiming unfair competitive practices, fraudulent business claims, copyright infringement and more.

The auction site has a roughly 25% stake in Craigslist, and Craigslist wants it back, and the filing says that Craigslist wants eBay to divest its shares.

We’ll have to see how this pans out when it goes to court, but it’s looking like eBay, the company that trades on people being good to each other, wasn’t taking its own medicine.