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Names can be trademarked (not copyrighted or patented). There is no worldwide jurisdiction for trademarks. Though the names you might find here are almost exclusively in English they are used - or can be - all over the world. Before you make the huge investment in choosing a name for your lifetime project, make sure that nobody else in your jurisdiction has the right to prevent you from doing so!

If you are located in the United States, you can use the free trademark search services at USPTO to check what sort of claims are made on the name you desire.

Keep in mind that you create trademark rights by use - and thus, in the case of many users perhaps ignorant of each others existence, the question is; who can claim first use? By applying for and receiving trademark registration from the USPTO ( it will cost you $245, or more if you go through a lawyer) you can strengthen your claim - or somebody else's

Just because a name is registered, doesn't mean you can't register too. A trademark gives you the right to exclude competitors from using names, symbols or slogans that customers would confuse with your company - this is why the name "Lexus" is a car, a brand of pesticide, and an alcoholic beverage - because the varying nature of these products does not confuse us into thinking they come from the same company.

Here are some articles that might be instructive:

Registering a trademark in the UK
Registering a trademark in South Africa
Registering a trademark in India
Crash course on trademarks from Ius Mentus
The USPTO trademark search engine - TESS