Re: Trademarking an address
Trademarks are only valid so long as the owner makes use of them. If the domain expired and the previous owner made no good-faith attempt to regain control once they found out (eg. it didn't just accidentally lapse and get instantly grabbed by a scammer), then it could be argued that they had abandoned the trademark when they abandoned the domain name.
Note: "It could be argued". You'd still likely have to defend yourself in court (or to arbitrartors) if the previous trademark owner decides to be a pain about it.
Biting the hand that feeds IT
