What the PTAB does
The Patent Trial and Appeal Board (PTAB) is the body that reviews appeals from patent applicants and conducts trials addressing the validity of issued patents. It sits within the United States patent organization and operates under statutory procedures established by Congress.
PTAB handles two main streams of work: ex parte appeals from applicants whose claims have been rejected during examination, and trial proceedings (often referred to under the America Invents Act, or AIA) that can be used to challenge the validity of an issued patent.
Core topics
AIA Trial Roundtables
Information on roundtables convened to discuss trial practices under the America Invents Act, including the structure and scope of inter partes review, post-grant review, and covered business method review.
Precedential and Informative Opinions
Guidance on how the board designates opinions as precedential or informative, and how these designations guide subsequent proceedings and the public record of board decisions.
Board Procedures
Practical information on filings, motions, oral hearings, and timelines used by parties practicing before the board.
Where to find related material
- Patents — broader patent application, prosecution, and classification resources, including the Cooperative Patent Classification (CPC) and the Patent Prosecution Highway (PPH).
- Patent Basics — foundational information for inventors and entrepreneurs entering the patent system.
The Patent Trial and Appeal Board sits at the heart of post-grant and pre-issuance review, serving as a neutral forum where patentability questions are weighed against the public interest in clear, valid claims. Its dual function is often overlooked: handling ex parte appeals from applicants whose claims were rejected during examination, and conducting inter partes trials that allow third parties to challenge the validity of issued patents. Together these pathways shape how rights are defined, narrowed, or upheld. The framework reflects a broader policy conversation about balancing innovation incentives with administrative efficiency, ensuring that issued patents meet statutory standards while offering meaningful opportunities for review.