Assignor Estoppel Not an Exception to 311(a)

The Patent Trial & Appeal Board (PTAB) has designated the following decision as precedential: Athena Automation Ltd v. Husky Injection Molding System Ltd., IPR2013-00290, Paper 18 (PTAB Oct. 25, 2013), Section II.A. (here)

Athena holds that the doctrine of assignor estoppel is not an exception to 35 U.S.C. § 311(a), which allows “a person who is not the owner of a patent” to file a petition for inter partes review. This decision was later left undisturbed by a split-panel of the Federal Circuit. The majority found review of assignor estoppel precluded by operation of the appeal bar (35 U.S.C. § 314(d), relying upon the Court’s earlier decision in Achates Reference Publishing. Of course, the continued viability of Achates is being reconsidered, en banc, in in Wi-Fi One LLC v. Broadcom (here). As such, this agency precedent might be revisited by the CAFC down the line.