I don't think that is true.
http://tess2.uspto.gov/bin/gate.exe?...ate=rpeap9.1.1 Go to that link, and type in some wrestler names or move names and see what comes up.
I am pretty sure the WWE would trademark every name. I mean, if they didn't that would mean NWA TNA could also have a guy named The Rock.
Also, think back to when guys get released. When Sean Waltman was released, he was given the rights to use Syxx-Pac. Thus, WWE owned that name's trademark (through WCW), and released it to him. That is why he can't be called X-Pac. James Gibson is the same way I believe.
However, guys like Raven own their own name, and so can use it after they leave WWE, but can not use, or gain revenue from, any likenesses or merchendise produced by the WWE while under contract without an agreement from both parties.
I'm playing EWR, and trying to figure out who on my TNA roster I can re-name (BG James can be renamed Road Dogg as it has expired, where as X-Pac has not.)