As predicted based upon the earlier oral argument, the Federal Circuit closed the door on the potential for discovery in inter partes patent reexamination in Abbott Laboratories v. Cordis Corp. (here) Specifically, the CAFC held that parties to such a patent reexamination proceeding cannot subpoena documents or testimony before the USPTO under 35 U.S.C. § 24.
Interestingly, as was the case earlier in Lingamfelter v. Kappos, the Court utilized the developments of the recent AIA legislation as a lens by which to view the earlier inter partes reexamination statutes, contrasting the earlier legislative intent as:
Congress’s most recent amendment to the Patent Act further demonstrates that Congress intended for subpoenas under section 24 to be made available in those proceedings in which depositions are relied upon by the PTO. In 2011, Congress replaced inter partes reexamination with a new proceeding called inter partes review. . . . The purpose of this reform was to “convert inter partes reexamination from an examinational to an adjudicative proceeding,” and one of its touted “improvements” over the former proceeding is to allow the limited use of depositions. . . . In particular, Congress provided for depositions of affiants in the proceeding, and also authorized parties to “seek such discovery as the Patent Office determines is otherwise necessary in the interest of justice.” . . . In the course of implementing these mandates, the PTO has recognized that the AIA authorizes parties to seek section 24 subpoenas in the new proceedings.