From what I know, Linux is a registered trademark of Linus Torvalds. http://www.linuxinsider.com/rsstory/45662.html
A lawyer who specializes on domain-trademark disputes. Lots of 'em out there if you search hard enough.
Hello, It could be a trademark infringement. You may want to contact Cyberlaw and ask them. http://www.cyberlaw.pro/general/practices/trademarks.html Jack