The Uniform Domain-Name Dispute-Resolution Policy (UDRP) was established by the Internet Corporation for Assigned Names and Numbers (ICANN) to assist in the resolution of disputes concerning the registration of internet domain names. The UDRP currently applies to all top-level domains including .biz, .com, .info, .name, .net, .org and some country code top-level domains.
When a person chooses a domain name, they must warrant, among other things that registering the chosen domain name “will not infringe upon or violate the rights of any third party.”

A complainant in a UDRP proceeding must proof three things to be successful:

• The domain name is identical/confusingly similar to a trademark or service mark
• The registrant does not have any legitimate interests in the domain name
• The registrant registered the domain name and is using it in “bad faith.”

To look at the official UDRP Policy from ICANN you can refer to the link below:
http://www.icann.org/en/udrp/udrp.htm