First Final Decision in Multiple CBM Proceedings Estops Petitioner from Maintaining Remaining CBM Proceedings on Same Patent Claims

Nov 9, 2015

Reading Time : 1 min

On September 25, the PTAB issued final written decisions in two of the original proceedings, concluding that the patents were obvious over the prior art, and therefore invalid. The Board then requested briefing as to whether Apple was estopped from arguing the patentability of the same claims under § 101 in the later-filed proceedings.

§ 325(e)(1) states:

[t]he petitioner in a post-grant review of a claim in a patent under this chapter that results in a final written decision under section 328(a) or the real party in interest or privy of the petitioner, may not request or maintain a proceeding before the Office with respect to that claim on any ground that the petitioner raised or reasonably could have raised during that post-grant review.

Apple argued that (1) it could not “reasonably have raised” in its earlier petitions the Alice-based § 101 grounds presented in later petitions, because that opinion did not yet exist, and (2) that it was not “maintaining” the proceeding before the PTAB, because the evidentiary record had closed.

The Board, however, rejected both arguments. First, the Board noted that, although Alice had not yet been decided, the Supreme Court had already decided Bilski and Mayo, upon which Alice relied. The Board held that the estoppel statute does not make any exceptions for “intervening case law that merely clarifies jurisprudence.” Second, the Board held that “maintaining a proceeding” includes presenting argument at the hearing with respect to the claims. As a result, the PTAB dismissed Apple from the remaining proceedings.

Nevertheless, the Board did not dismiss the proceedings altogether. Instead, it held that because they were in late stages with a fully developed record, it would continue the litigation without Apple.

Apple, Inc. v. Smartflash, LLC, CBM2015-00015, Paper 49 (PTAB November 5, 2015)

Share This Insight

Previous Entries

IP Newsflash

February 24, 2026

The Southern District of Florida recently dismissed a complaint without prejudice because the allegations used a form of “shotgun pleading.” The court explained that a shotgun pleading includes those where every count incorporates every preceding paragraph into each cause of action, and that dismissal of such pleadings was required under Eleventh Circuit precedent.

...

Read More

IP Newsflash

February 20, 2026

The Federal Circuit recently addressed whether the PTO must conduct notice‑and‑comment rulemaking before issuing instructions that guide how the Board should exercise discretion at the institution stage of IPRs. The court held that no such rulemaking is required. Instructions to the Board regarding its use of the Director’s delegated discretionary authority not to institute review are merely general statements of policy exempt from notice-and-comment rulemaking.  

...

Read More

IP Newsflash

February 18, 2026

The District Court for the District of Delaware recently invalidated claims directed to a panoramic objective lens for lack of enablement, holding the claims impermissibly recited a single element in means‑plus‑function form. Under § 112, ¶ 6, “[a]n element in a claim for a combination may be expressed as a means or step for performing a specified function….” By its plain terms, the statute permits means‑plus‑function claiming only in the context of a “combination.” In other words, a claim may not consist solely of a single means‑plus‑function element. Claims drafted as a single means are invalid for lack of enablement as a matter of law.

...

Read More

IP Newsflash

February 13, 2026

In an ANDA litigation, the District of Delaware recently denied the defendants’ motion to compel the production of correspondence between the plaintiffs’ testifying expert and a third-party analyst who had performed experiments and provided data used by the testifying expert. The court found that the scope of material sought by the motion was overbroad and disproportionate to the needs of the case.

...

Read More

© 2026 Akin Gump Strauss Hauer & Feld LLP. All rights reserved. Attorney advertising. This document is distributed for informational use only; it does not constitute legal advice and should not be used as such. Prior results do not guarantee a similar outcome. Akin is the practicing name of Akin Gump LLP, a New York limited liability partnership authorized and regulated by the Solicitors Regulation Authority under number 267321. A list of the partners is available for inspection at Eighth Floor, Ten Bishops Square, London E1 6EG. For more information about Akin Gump LLP, Akin Gump Strauss Hauer & Feld LLP and other associated entities under which the Akin Gump network operates worldwide, please see our Legal Notices page.