Humm...
Sounds like you are infringing on their TM.
What good would taking the site down do?
TM owner can easily find your site on archive.org and/or on google.
On the other hand, TM owner didn't bother with your domain for more than 13 yrs.
Or, did they already contact you?
If they didn't, how about...
Transfer the domain to someone else you know which would show
entirely different whois and make site that has nothing to do with TM?
It's just my opinion and I am not a lawyer
