The Sunrise Period of domain registration is a special period during which trademark holders may preregister names that are the same or similar to their trademarks in order to avoid cybersquatting. This occurs prior to the general launch of the TLD. In order to register, the group or individual must be able to prove their prior right to the name. The Sunrise Period serves as a test period, and is followed by the Landrush Period.
When two trademark owners both have legitimate claim to a given domain, these domains then go to auction.