What is inter partes review? Inter partes review (IPR) is a new procedure under the America Invents Act (AIA) for challenging the validity of one or more claims of a patent on § 102 (novelty) or § 103 (obviousness) grounds, while considering only prior art existing in patents or printed publications. The review is a trial proceeding before the Patent Trial and Appeal Board (“the Board”). Once the petition is filed, the Board.. Read More