« Trade marks are a name or symbol that are used to distinguish the goods of services of a particular company from others.
Similar to copyrights and other signs of intellectual property, the effects of the trademark system is territorial. This means, that each country has its own trademark system. A brand name like Machine Head may be owned by one person in the United Kingdom and by another, totally unrelated, person in the United States.
The domain name system, which is putting most of its emphasis on the .com title as the international domain, does not really jive well with the trade mark system because of the latter’s fundamental definition of ownership. »