PTAB challenges

Proceedings overview

There is one AIA trial proceeding on file for US patent 12143606. This proceeding is currently active and pending institution, providing a potential defensive avenue for a defendant.

IPR2026-00192 — Amazon.com Services LLC et al. v. InterDigital VC Holdings Inc

• Type: Inter Partes Review
• Filed: 2026-01-05
• Status: Pending. This IPR is currently in the pre-institution phase.
• Judge panel: Information regarding the assigned judge panel is not yet publicly available in the provided data or readily ascertainable at this stage of the proceeding.
• Petition grounds: Details regarding the specific claims challenged, the prior art references cited, and the statutory bases (§ 102 / § 103 / § 112) for the petition are not publicly available in the provided data or immediately accessible without access to the full petition document.
• Institution decision: Not yet issued. The PTAB has a statutory deadline, typically within six months of the petition filing, to decide whether to institute review. Given the filing date of 2026-01-05, the institution decision is anticipated around early July 2026.
• Final Written Decision (if issued): Not applicable, as the institution decision has not yet been issued.
• Settlement / termination: No information on settlement or termination is available. The proceeding is active.
• Appeal: Not applicable, as no Final Written Decision has been issued.
• Defensive value: This active IPR proceeding indicates that the patentability of claims in US12143606 is currently under review by the PTAB. While the outcome is uncertain, a defendant facing assertion of this patent might monitor this proceeding closely, as institution of trial could lead to claim invalidation, thereby weakening the patent owner's position.

Strategic summary

Currently, there are no claims of US patent 12143606 that have been canceled or sustained through a Final Written Decision in an AIA trial. All claims are presently untested in the context of a PTAB final written decision.

Since IPR2026-00192 is still in the pending status and an institution decision has not yet been made, there is no estoppel landscape established under § 315(e)(2). If the PTAB institutes review, then the petitioner (Amazon.com Services LLC et al.) and their privies would be estopped from raising grounds they raised or reasonably could have raised against the instituted claims in future proceedings once a Final Written Decision is issued. At this stage, prior-art grounds remain available for potential future challenges by other parties.

There is no discernible pattern signal of multiple IPR filings by the same petitioner or aggressive PTAB appeal strategies by the patent owner, as only one, recently filed IPR proceeding is currently active. Unified Patents is listed as a petitioner for IPR2026-00192, indicating a potential defensive aggregator in the chain.

Recommended next steps

• As IPR2026-00192 is currently pending, the critical upcoming milestone is the institution decision. The PTAB's statutory deadline for issuing an institution decision is typically six months from the filing date, placing the anticipated decision around July 5, 2026. Monitoring the PTAB E2E system for updates on IPR2026-00192 would be advisable.
• Since the proceeding is in its early stages, it would be beneficial to review the public docket for IPR2026-00192 on the USPTO PTAB E2E portal (https://ptab.uspto.gov/#/search/document/IPR2026-00192) once information becomes available, to understand the specific claims challenged, the prior art asserted, and the petitioner's arguments.