| United States patent law |
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| Legislation |
| Types of patent claims |
| Procedures |
| Other topics |
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).