Webwork - 5:00 pm on Aug 28, 2011 (gmt 0)
Hello f4c. Welcome to WebmasterWorld.
I'm afraid that your plan probably won't succeed.
First, you may have to spend $$$ to establish trademark rights globally.
Next, you may have to spend $$$ to defend those rights globally.
It might actually be cheaper to register the interesting name in the top gTLDs and the ccTLDs where the name is likely to deployed.
Cost of lawyers, trademark registrations, etc. = $$$$$+
Cost of registering domain in top TLDs = $200+/-
I also wouldn't go spending all the money on your clever/catchy/brandable domain unless/until you actually have proven the financial viability of the website/Web service. For that purpose you might run your initial test on a "throw away" domain - which you redirect to your brand domain(s) once you prove the financial viability of the idea.