PTAB challenges

Proceedings overview

There are three AIA trial proceedings on file for US patent 9232158, consisting of two settled IPRs and one active IPR that is currently instituted. This gives a defendant a mixed defensive posture, with two prior IPRs ending in settlement and one pending IPR potentially challenging the patent.

IPR2022-00710 — Petitioner: [Information not publicly available] v. Patent Owner: [Information not publicly available]

• Type: Inter Partes Review
• Filed: The filing date is not explicitly provided, but the case was filed in 2022.
• Status: Settlement. This IPR was terminated due to a settlement between the parties.
• Judge panel: Not publicly available.
• Petition grounds: Not publicly available due to settlement.
• Institution decision: Not publicly available due to settlement.
• Final Written Decision (if issued): No Final Written Decision was issued due to settlement.
• Settlement / termination: The case was settled. The specific terms of the settlement are confidential.
• Appeal: No appeal to the Federal Circuit as no FWD was issued.
• Defensive value: This settlement indicates that the petitioner found it advantageous to settle rather than proceed to a final decision. While the grounds were not adjudicated, it suggests a potential strength in the patent or the patent owner's defense, or simply a business decision to avoid further litigation costs.

IPR2022-01338 — Petitioner: [Information not publicly available] v. Patent Owner: [Information not publicly available]

• Type: Inter Partes Review
• Filed: The filing date is not explicitly provided, but the case was filed in 2022.
• Status: Settlement. This IPR was terminated due to a settlement between the parties.
• Judge panel: Not publicly available.
• Petition grounds: Not publicly available due to settlement.
• Institution decision: Not publicly available due to settlement.
• Final Written Decision (if issued): No Final Written Decision was issued due to settlement.
• Settlement / termination: The case was settled. The specific terms of the settlement are confidential.
• Appeal: No appeal to the Federal Circuit as no FWD was issued.
• Defensive value: Similar to IPR2022-00710, this settlement suggests that the petitioner chose to settle. The non-adjudicated grounds mean the claims of US9232158 were not tested on their merits in this proceeding, and the defensive value is limited to the fact that two IPRs were initiated but settled.

IPR2025-00222 — Petitioner: [Information not publicly available] v. Patent Owner: [Information not publicly available]

• Type: Inter Partes Review
• Filed: The filing date is not explicitly provided, but the case was filed in 2025.
• Status: Pending - Instituted. This IPR is currently active and has been instituted.
• Judge panel: Not publicly available at this stage.
• Petition grounds: Not publicly available yet, as the institution decision would typically detail the grounds.
• Institution decision: Instituted. The exact date and reasoning are not available without access to the full institution decision, but the status confirms the PTAB found sufficient grounds to proceed with a review.
• Final Written Decision (if issued): Not yet issued, as the proceeding is pending.
• Settlement / termination: Not yet settled or terminated, as the proceeding is pending.
• Appeal: Not applicable yet.
• Defensive value: This active, instituted IPR presents a potential opportunity for a defendant. If the petitioner is successful, claims of US9232158 could be invalidated, weakening the patent owner's assertion position. The outcome of this IPR should be closely monitored.

Strategic summary

As of May 29, 2026, the claims of US9232158 remain largely untested in AIA trial proceedings, with the exception of the pending IPR2025-00222. Two prior IPRs (IPR2022-00710 and IPR2022-01338) were filed but ultimately settled, meaning the PTAB did not issue Final Written Decisions on the patentability of the challenged claims. This lack of adjudicated outcomes means there are no claims currently canceled or explicitly sustained by the PTAB. All claims of the patent are currently UNTESTED by a Final Written Decision.

The estoppel landscape for a defendant is therefore relatively open. Since no Final Written Decisions were issued in IPR2022-00710 and IPR2022-01338, the statutory estoppel provisions of § 315(e)(2) are unlikely to apply to these settled cases, unless the settlement agreements themselves included specific estoppel provisions, which are typically confidential. Thus, a defendant currently being asserted against would likely still be able to raise prior-art grounds that were (or could have been) asserted in those settled IPRs. The active IPR2025-00222 will determine the availability of new grounds once a Final Written Decision is issued.

The pattern of two IPRs settling quickly might suggest that the patent owner (Intellectual Ventures II LLC) is willing to negotiate, or that petitioners found the cost of proceeding through FWD exceeded the benefit. The fact that Intellectual Ventures II LLC is a known NPE also aligns with a strategy of leveraging patents for licensing and settlements rather than necessarily pursuing full litigation or PTAB trials to completion. The filing of IPR2025-00222 indicates that at least one party believes there are still viable challenges to the patent's claims.

Recommended next steps

The most important next step is to closely monitor IPR2025-00222, as its outcome could significantly impact the defensive posture against US9232158. The PTAB has a statutory one-year deadline for issuing a Final Written Decision from the date of institution. As this IPR was instituted, its procedural milestones, such as oral hearing and FWD due date, should be tracked diligently.

For any defendant facing assertion of this patent, it would be prudent to:

• Review the petition and institution decision for IPR2025-00222 once they become publicly available to understand the specific claims being challenged and the prior art asserted. This will inform potential invalidity arguments.
• Consider filing an amicus brief or monitoring the public docket for IPR2025-00222, if permitted and strategically beneficial.
• If considering filing a new IPR, carefully analyze the grounds raised in IPR2025-00222 to avoid redundant challenges, and ensure any new petition focuses on distinct prior art or claims not yet addressed, particularly given the prior settlements.

The absence of any PTAB activity resulting in a final decision on the merits for US9232158 means that the patent's claims have not yet been "hardened" by surviving a full IPR trial. This leaves open avenues for invalidity challenges.