PTAB challenges

Proceedings overview

US Patent 8112104 has been involved in one AIA trial proceeding, which resulted in a discretionary denial of institution. This means no claims of the patent have been adjudicated for patentability in an AIA trial, leaving all claims untested by this specific IPR and thus preserving the patent owner's posture.

IPR2026-00142 — [Apple Inc.](/litigations/by-plaintiff/Apple%20Inc.) v. Ingeniospec LLC

• Type: Inter Partes Review
• Filed: 2025-11-21
• Status: Discretionary Denial. The petition was not instituted, meaning the Board declined to review the challenged claims on their merits.
• Judge panel: Not publicly available due to discretionary denial prior to panel assignment being widely publicized for non-instituted cases.
• Petition grounds: Details regarding specific claims challenged, prior art asserted, and statutory bases (§ 102 / § 103) are not publicly available given the discretionary denial without institution.
• Institution decision: Denied. The institution was denied on 2026-05-14. The specific reasoning for the discretionary denial is not publicly detailed in the provided Google Patents snippet. Discretionary denials often relate to factors like parallel district court litigation, joinder issues, or the "Fintan" factors (a series of considerations for discretionary denial).
• Final Written Decision (if issued): Not issued, as institution was denied.
• Settlement / termination: The proceeding was terminated by discretionary denial of institution.
• Appeal: No appeal to the Federal Circuit, as no Final Written Decision was issued.
• Defensive value: This proceeding indicates that Apple Inc.'s attempt to challenge the patent through this IPR was unsuccessful due to a discretionary denial. No claims were cancelled or confirmed patentable, so the patent's validity in relation to this IPR is unchanged. For a defendant facing assertion, this means the patent has not been weakened by this specific IPR, and any prior art that Apple Inc. might have raised in this IPR is still potentially available for use in other challenges or defenses (subject to specific estoppel rules that apply only if institution were granted).

Strategic summary

Currently, all 47 claims of US8112104 remain UNTESTED by any AIA trial proceeding, as the single IPR filed (IPR2026-00142) resulted in a discretionary denial of institution. This means the merits of the patentability of these claims were not addressed by the PTAB.

Regarding the estoppel landscape, since IPR2026-00142 was not instituted, the petitioner (Apple Inc.) is generally not estopped under 35 U.S.C. § 315(e)(2) from raising invalidity grounds that were raised or reasonably could have been raised in the petition. This is because estoppel typically attaches only upon a final written decision. Therefore, for a defendant being asserted against, the full scope of prior-art grounds remains theoretically available for challenge, unless other legal doctrines or prior art searches reveal different constraints.

The pattern signals indicate that Apple Inc. attempted to challenge the patent via IPR, suggesting potential infringement concerns or a strategic move against the patent owner. The "Not Instituted - Procedural" status from the Google Patents overview and the more specific "Discretionary Denial" from the PTAB proceedings record highlight that the case did not proceed to a full trial on the merits, indicating a procedural rather than substantive outcome regarding patentability. The patent owner, Ingeniospec LLC, has not had to defend the patent's claims at trial in this proceeding.

Recommended next steps

Given the discretionary denial in IPR2026-00142, there is no Final Written Decision to link to for claim invalidation. If you are a defendant, the absence of an instituted IPR means the patent's claims have not been formally challenged and found unpatentable by the PTAB.

Review the reasons for the discretionary denial in IPR2026-00142. While not publicly detailed in the provided information, understanding the Board's specific reasoning could inform future defense strategies. For instance, if the denial was due to parallel litigation, it might suggest a need to coordinate any new PTAB petition with district court proceedings.

Consider conducting a thorough prior art search to identify new invalidity contentions not previously considered, as the existing IPR did not result in an adjudication of patentability.

Monitor the ongoing litigation cases in the Texas Western District Court (1:25-cv-00877) and Texas Eastern District Court (2:24-cv-00819) mentioned in the litigation summary for any developments that might impact the patent's validity or enforceability. These cases are ongoing and may reveal more about the claims being asserted and the defenses being raised.

The patent's anticipated expiration date is 2024-12-07, and its current legal status is "Expired - Lifetime." This information, while noted in the patent metadata, contradicts the current date (2026-05-27), indicating the patent has, in fact, already expired. The expiration of the patent significantly changes the strategic landscape for any potential defendant, as remedies for infringement would generally be limited to acts occurring before the expiration date.

The IPR was filed on 2025-11-21, well after the patent's anticipated expiration date of 2024-12-07. An IPR can generally only be filed against an unexpired patent. This discrepancy requires further investigation. The "Expired - Lifetime" status on the Google Patents page and the anticipated expiration date of 2024-12-07 suggest the patent is no longer active. An IPR on an expired patent would typically not be instituted, which could be a reason for the discretionary denial.

Therefore, a crucial next step is to definitively confirm the patent's current expiration status. If the patent has indeed expired, the immediate threat of future infringement is eliminated, and any ongoing litigation would pertain only to past infringement.## Proceedings overview
US Patent 8112104 has been involved in one AIA trial proceeding, IPR2026-00142, which resulted in a discretionary denial of institution. This means no claims of the patent have been adjudicated for patentability by the PTAB, leaving all claims formally untested by this specific IPR.

IPR2026-00142 — Apple Inc. v. Ingeniospec LLC

• Type: Inter Partes Review
• Filed: 2025-11-21
• Status: Discretionary Denial. The petition was not instituted, meaning the Patent Trial and Appeal Board (PTAB) declined to review the challenged claims on their merits, and the proceeding was terminated on 2026-05-14.
• Judge panel: The specific judge panel assigned to this proceeding is not publicly available given the discretionary denial prior to institution.
• Petition grounds: The specific claims challenged, prior art asserted, and statutory bases (§ 102 / § 103) are not publicly detailed in the available information due to the discretionary denial.
• Institution decision: Denied on 2026-05-14. The exact reasoning for the discretionary denial for IPR2026-00142 is not explicitly stated in the public records. However, recent trends at the PTAB, especially from late 2025 into 2026, have shown a significant increase in discretionary denials, with a 51% institution-denial rate in early FY2026. Director John Squires took over all IPR institution decisions in October 2025 and has implemented policies that consider factors such as U.S. manufacturing footprint, patent owner's reliance interests, and restrictions on serial or late-stage validity challenges. A critical factor for this specific IPR is the patent's status: US8112104 B1 is listed as "Expired - Lifetime" with an anticipated expiration date of 2024-12-07. An Inter Partes Review generally applies to unexpired patents. The filing date of IPR2026-00142 (2025-11-21) falls after the patent's expiration, which would provide a strong procedural basis for discretionary denial.
• Final Written Decision (if issued): Not issued, as institution was denied.
• Settlement / termination: The proceeding was terminated by the discretionary denial of institution.
• Appeal: No appeal to the Federal Circuit occurred, as no Final Written Decision was issued.
• Defensive value: This proceeding indicates that Apple Inc.'s attempt to challenge the patent via IPR was unsuccessful due to a discretionary denial, most likely attributable to the patent's expiration prior to the IPR's filing. No claims were cancelled or confirmed patentable, so the patent's validity in relation to this IPR remains formally untested. For a defendant facing assertion of this patent, the IPR provides no direct benefit in terms of claims invalidated, and the patent's expired status means any infringement claims would be limited to past acts.

Strategic summary

All 47 claims of US8112104 are presently UNTESTED by any AIA trial proceeding, as the single IPR filed (IPR2026-00142) resulted in a discretionary denial of institution. The merits of the patentability of these claims were not addressed by the PTAB.

Regarding the estoppel landscape, since IPR2026-00142 was denied institution, the petitioner (Apple Inc.) is generally not estopped under 35 U.S.C. § 315(e)(2) from raising invalidity grounds that were raised or reasonably could have been raised in the petition. Estoppel typically applies upon the issuance of a final written decision. Therefore, for any potential defendant, prior art grounds remain theoretically available for challenge, subject to other legal doctrines.

The filing of IPR2026-00142 by Apple Inc. suggests a previous interest in challenging the patent. However, the discretionary denial, issued on 2026-05-14, likely stemmed from the patent's expired status, which is listed as "Expired - Lifetime" with an anticipated expiration date of 2024-12-07 on Google Patents. An IPR filed on 2025-11-21, well after the patent's expiration, is procedurally irregular and would typically not be instituted, especially given the PTAB's recent emphasis on efficient management of its caseload and a general trend towards higher rates of discretionary denials since late 2025. This indicates that the PTAB considered the IPR unlikely to achieve its statutory purpose for an expired patent.

Recommended next steps

The most significant factor for US8112104 is its "Expired - Lifetime" status with an anticipated expiration date of 2024-12-07, which means the patent has already expired as of today's date (2026-05-27). This fundamental change in the patent's legal status supersedes much of the typical IPR strategy.

1. Confirm Patent Expiration: Urgently confirm the precise expiration date and status of US8112104 with the USPTO directly. If the patent has indeed expired, new acts of infringement cannot occur, and remedies for any alleged infringement would be limited to acts that occurred before 2024-12-07.
2. Implications for Litigation: If the patent is expired, any ongoing district court cases (e.g., 1:25-cv-00877 in Texas Western District Court and 2:24-cv-00819 in Texas Eastern District Court) would be solely focused on past infringement damages, if any. The ability to seek injunctive relief would be moot.
3. No PTAB-based Invalidation: As the sole IPR was denied institution, no claims of US8112104 have been invalidated by the PTAB. Therefore, an IPR-based defense on current patentability grounds is not viable, and the focus shifts entirely to non-infringement or invalidity arguments within district court proceedings for past alleged infringement.
4. Monitor Ongoing District Court Cases: Continue to monitor the identified district court litigation (1:25-cv-00877 and 2:24-cv-00819) for any developments, particularly how the patent owner addresses the patent's expired status and any arguments related to past infringement or validity challenges raised in that forum.