.XXX is an sTLD (sponsored Top Level Domain) designed specifically for the global adult entertainment industry.  The Sponsored Community consists of individuals, companies and organizations that provide goods and services in the adult entertainment industry.

If you are a member of the Sponsored Community, you may be able to register your trademark as .XXX domain name in the Sunrise A period. 

If you are not a Sponsored Community member, you may block registration of your trademark for registration by any third parties (for an initial ten year term) during the Sunrise B period.  The Sunrise periods run from September 7 to October 28, 2011 and the cost for an initial blocking term is generally between $200 - $300 depending on the registrar you choose. In order to apply for a Sunrise B "blocking" registration, you must submit evidence of ownership of an International or US Federal trademark registration that was issued before September 1, 2011 identically matching (with minor exceptions for special characters) the proposed domain name.

After the Sunrise period has closed, domain names in .XXX will be available to members of the Sponsored Community who did not qualify for a Sunrise A registration in a "Landrush" period from November 8 - November 26, 2011.  Finally, any remaining domain names will be available to the general public for registration on December 6, 2011.

Based upon these dates and requirements, if you are a trademark owner who owns an International or US Federal trademark registration that issued before September 1, 2011, you may want to strongly consider applying for a blocking registration during the Sunrise B period, particularly if your trademark is one that may be susceptible to legitimate fair use by a third party in the Sponsored Community.