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Only under Rare Circumstances Can the Patent Trial & Appeal Board Find Proposed Substitute Claims Unpatentable on Its Own

The US Court of Appeals for the Federal Circuit addressed, for the first time, the issue of when the Patent Trial & Appeal Board (Board) may raise a ground of unpatentability that was not advanced by a petitioner in relation to proposed substitute claims. The Court upheld the standard defining the “rare circumstances” in which such a ruling is proper while questioning the Board’s reasoning and application of the standard. Hunting Titan, Inc. v. DynaEnergetics Europe GMBH, Case Nos. 20-2163; -2191 (Fed. Cir. Mar. 24, 2022) (Prost, C.J., Reyna, Hughes, JJ.) (Prost, C.J., concurring).

Hunting Titan challenged DynaEnergetics’ patent in an inter partes review (IPR) based on anticipation and obviousness grounds. The Board found all the original claims of the patent unpatentable as anticipated. DynaEnergetics moved to amend to add proposed substitute claims. Hunting Titan opposed the motion to amend but advanced only obviousness grounds against the proposed substitute claims. The Board determined sua sponte that the proposed substitute claims were unpatentable as anticipated and, therefore, denied the motion to amend. DynaEnergetics requested rehearing, and the Precedential Opinion Panel (POP) reversed the Board’s denial of the motion to amend and determined that Hunting Titan did not prove that the proposed substitute claims were unpatentable.

The POP decided that “only under rare circumstances” should the Board sua sponte raise a ground for unpatentability not advanced by the petitioner in relation to proposed substitute claims. The rare circumstances include only two situations:

  1. When the petitioner is not involved in the motion to amend, such as when a petitioner chooses not to oppose the motion or ceases to participate in the proceeding altogether
  2. When evidence of unpatentability is readily identifiable and persuasive, such as if the substitute claims are unpatentable for the same reasons as the original claims.

The POP stated that in most circumstances, it is best to rely on the adversarial system and expect the petitioner to raise the unpatentability grounds for consideration.

The Federal Circuit upheld the POP’s standard for when the Board may sua sponte find proposed substitute claims unpatentable but also found the POP’s reasoning “problematic” because it placed too much emphasis on the adversarial system. The Court noted that Board proceedings, such as IPRs, are fundamentally a review of an earlier administrative proceeding, as opposed to civil litigation, The POP’s rationale was based on the public interest being served by an adversarial system rather than on the public interest being served by maintaining integrity of the patent system.

The Federal Circuit also questioned the POP’s application of its new standard to the case at hand, noting that the readily identifiable evidence exception should have been applied when the Board found the proposed substitute claims unpatentable for the same reasons it found the original claims to be unpatentable.

In her concurring opinion, Chief Judge Prost noted that “[i]t makes little sense to limit the [Board], in its role within the agency responsible for issuing patents, to the petitioner’s arguments.” Instead, “the Board must determine whether the [...]

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PTO Updates Arthrex Guidance

The US Patent & Trademark Office (PTO) updated its June 29, 2021, interim procedure to implement the Supreme Court of the United States’ decision in U.S. v. Arthrex, Inc., and specifically updated the Arthrex Q&As section. The PTO’s July 20, 2021, updates address the effect of Arthrex on Patent Trial & Appeal Board (PTAB) proceedings generally and ongoing proceedings in particular. In Arthrex, the Supreme Court held that appointment of PTAB administrative patent judges violated the Appointments Clause of the Constitution, and that the proper remedy was to vest the PTO director with discretion to overturn the PTAB’s decisions.

In section A of the Q&As, pertaining to the effect of Arthrex on PTAB proceedings, the PTO explained that the director has the option to sua sponte initiate director review of any final written decision at any point before the filing of a notice of appeal or before the time for filing such a notice has expired. The updated Q&As further explain that a request for director review is not an opportunity for a party to make new arguments or submit new evidence and imposes a 15-page limit on any request. The updated Q&As also clarify the mechanism to request review by the director. The update clarifies that a party cannot request both director review and a panel rehearing after the issuance of a final written decision, and if a party requests both it will be treated as a request for director review. However, if a panel rehearing is granted, a party can request director review of the rehearing panel decision.

In section B of the update, pertaining to the effect of Arthrex on ongoing PTAB proceedings, the PTO clarified the deadline for requesting a rehearing by the director and the circumstances under which the director will consider granting extensions of the rehearing deadlines.

In addition, the PTO added a new section, section D, pertaining to the interim internal process for director review. In section D, the Q&As address:

  1. What happens to a director review request when it is received by the PTO?
  2. What criteria does the advisory committee use when evaluating director review requests?
  3. How will the director identify decisions for sua sponte director review?

Regarding 1), the Q&As explain that requests for director review will be evaluated by an advisory committee established by the director. Regarding 2), the Q&As explain there is no exclusive list of criteria, but list criteria the advisory committee may consider. Regarding 3), the Q&As explain that the PTAB internal management review team will alert the director to decisions that may warrant director review.




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