Yes you are correct they are yours. And yes they are yours for now. But it is trademarked. You bought them after googlepayout.com came out. IF you had them prior than ok that is a different story. For the time being park them and wait. I dont know what you can do exactly with the domains other than a forum or built for adsense or ppc site. But it just takes one person to report to the Google Greedy Gods that you have them. Its just a matter of time.
l was thinking to cancell the domains but l changed my opinion. l am going to make a directory to domains.
I think google can give you 100$ for each domian anytime if they want, Even they don't want to waste time going throught the icann dispute which takes some time to resolve, so keep it with you.