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