Domain Name Registration and Copyright Infringement
The best method to avoid conflict of trademarks is to search the trademark databases.
It provides you with all the registered and pending trademarks.
The regulations governing copyright issues for domain names are governed by
Internet Corporation for Assigned Names and Numbers (ICANN).
It is very likely that you would lose right of your domain name registration if:
You have intentionally chosen a name that is similar to another
domain name or trademark to create consumer confusion
You do not carry business under that name
Neither you nor any other individuals in your company
carry a name that is same or similar
You are planning to sell that domain name to your competitor for financial gain
For more information on the Uniform Domain Name Dispute
Resolution Policy - http://www.icann.org/dndr/udrp/policy.htm