In a WebmasterWorld thread, a member mentions that he has recently bought a domain from an owner who previously was banned from Google AdSense for violating TOS. He says that he is unable to get a response from Google and only that they have provided him with their Policies.
He is presented with the following advice:
You need to email Adsense support and make it clear to them that you purchased these domains, and ask them to unblock/clear them to show Adsense ads for you.
It might take a few days to get everything done, but as long as you act openly with them, there should be no problem. Don't put your own ads on them until they respond it is okay.
I'm not sure if this will help him as it seems that it appears that he's gone down that road before.
To prevent owners from running in circles, I have a suggestion instead to tie this into Google's AdSense Console. After all, there is similar functionality in Google Webmaster Central which has capability for webmasters to submit a reinclusion request. As I understand it from recent interview of Vanessa Fox by Rand Fishkin, the Google Webmaster Central is being consistently improved upon. I'd imagine that the Google AdSense portal is being worked upon as well. Maybe it would be a good idea to enable functionality for the portal to submit similar AdSense reinclusion requests.
Discussion continues at WebmasterWorld.