Patent Trial and Appeal Board
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Not to be confused with Patent Appeal Board, the equivalent body in Canada.
The Patent Trial and Appeal Board (PTAB) is an administrative law body of the United States Patent and Trademark Office (USPTO) which decides issues of patentability. It was formed on September 16, 2012, as one part of the America Invents Act. Prior to its formation, the main judicial body in the USPTO was the Board of Patent Appeals and Interferences (BPAI).