The Trademark Trial and Appeal Board (TTAB) is an administrative body within the United States Patent and Trademark Office (USPTO) that is responsible for hearing and deciding certain kinds of trademark issues.
Specifically, the TTAB hears appeals from the USPTO examining attorney decisions that trademarks should not be registered. Further, the TTAB hears inter partes proceedings, including trademark oppositions and cancellations.
Appeals from TTAB decisions are proper in the United States District Courts or the United States Court of Appeals for the Federal Circuit.
The TTAB currently has 23 judges, which are appointed by the United States Secretary of Commerce.