If you believe that a domain name registration infringes on your intellectual property: First, contact the registrant of the domain name. You may be able to work out the problem together.
If you must take your grievance to the next step, you may utilize ICANN's Uniform Domain Name Dispute Resolution Policy (UDRP) or a court system. You might also be able to utilize ICANN's Uniform Rapid Suspension (URS).
ICANN requires that the UDRP and the URS be incorporated by reference into the registration agreements between registrars and registrants. ICANN's Website contains a list of approved UDRP dispute-resolution service providers and approved URS dispute-resolution service providers.
If You Have a Problem With Your Registrar:
First, try to resolve the issue with the registrar directly. Registrars are required to have customer support mechanisms to assist you. Your registration agreement is a contract between you and your registrar, and therefore Afilias does not normally intervene in such disputes. If the problem persists, visit the InterNIC Registrar Problem Report page.
It provides additional suggestions, and a report form.
For more information on Afilias' Sunrise Dispute Resolution please download the document to the right.