Trademark Clearinghouse (TMCH)

Why it matters

Registered marks in the TMCH can use sunrise periods, which give trademark holders the first chance to register a matching domain before general sale. Others who try to register a matching name may see a claims notice. The TMCH does not block registrations. For domain buyers and sellers, a claims notice is a warning sign, since later disputes often follow. Common mistake: believing the TMCH gives rights over all extensions. It applies only to new gTLDs that use its services, and it does not cover .com.

Source: trademark-clearinghouse.com