A WebmasterWorld member has been banned from Google AdSense and wants to try again after several years on hiatus. He says that the past banning was due to fraudulent clicks but does not know the origin, and he'd like to start anew from a clean slate.
Is it possible, or is the ban for life?
AdSenseAdvisor says that you are able to appeal your account termination, but if you get banned for invalid clicks, you cannot participate in the program again. Since it's been several years for the publisher, it appears that the appeals process is the only way to go. In other words, you can't reapply, but you can certainly try to talk to Google about your previous banning and see if there's any recourse.
Forum discussion continues at WebmasterWorld.