With Trade marks if there is a dispute you must be able to prove "prior art" in other words show proof that you used the name on a specific date if you cannot you lose simple as that.
This can apply to any models name for example if Aria Giovanni started using her name 3 years ago and their was someone using it 3 years and one day ago and can prove it. Then Aria would lose her right to use the name. Also anyone can call a name a trade mark ? and place ? after it , it doesn't mean much. Few take the time or pay the cost of having a true trade mark ®
I wish you good luck and hope its an easy deal for you
Cindy xx
