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

April 9, 2026

In the April 1, 2026 edition of the Official Gazette, the U.S. Patent and Trademark Office announced a new procedural framework that permits patent owners to submit a limited, early response to a request for ex parte reexamination.

...

Read More

IP Newsflash

March 12, 2026

The Northern District of Illinois recently dismissed a complaint without prejudice for failing to plausibly allege patent infringement. The court found that the allegations of direct infringement were insufficiently pled where the images of the accused product included in the complaint did not appear to show a particular necessary element of the claims.

...

Read More

IP Newsflash

March 12, 2026

The District of New Jersey recently denied the litigants’ request for a briefing schedule to resolve a dispute about a proposed discovery confidentiality order, and also denied extending the deadlines for the defendants’ invalidity and non-infringement contentions. At issue was the scope of the FDA and patent prosecution bars in the confidentiality order.

...

Read More

IP Newsflash

February 27, 2026

The USPTO Director denied a patent owner’s request for discretionary denial of two inter partes review (IPR) petitions, citing the petitioner’s “well-settled expectation” that it would not be accused of infringing the two challenged patents. The Director’s conclusion was based on the petitioner’s decade-long business relationship with the original owner of the challenged patents.

...

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.