About Filing a UDRP
If someone has registered a domain name in a generic top-level domain (gTLD) operated under contract with ICANN that you believe may be infringing on your trademark, you may be able to file a Uniform Domain Name Dispute Resolution Policy (UDRP) proceeding against the registrant.
The UDRP provides a mandatory, low-cost administrative procedure primarily to resolve claims of abusive, bad faith domain name registration. In other situations, disputes may need to be resolved by traditional means such as voluntary negotiation and lawsuits.
The UDRP is only available for gTLDs operated under contract with ICANN
A full list of such gTLDs is on ICANN's Registry Listing page. For a list of country code top-level domains (ccTLDs) please refer to the complete list of ccTLDs IANA's Root Zone Database.
It is recommended to seek legal advice before filing a UDRP.
Additional information is on ICANN's webpage for Uniform Domain Name Dispute Resolution Policy.