PTAB challenges

Proceedings overview

There is one AIA trial proceeding on file for US patent 9933866. This proceeding resulted in a discretionary denial, meaning no claims were challenged on the merits, and the patent's claims remain untested by PTAB review. This gives a defendant no immediate claim-level invalidation benefit from PTAB proceedings.

IPR2025-01495 — SHENZHEN QIANFENYI INTELLIGENT TECHNOLOGY CO., LTD. v. Wacom Co Ltd

• Type: Inter Partes Review
• Filed: 2025-08-29
• Status: Discretionary Denial (The PTAB declined to institute the IPR, so no trial on the merits occurred.)
• Judge panel: Undetermined from public records at this stage, as the petition was denied.
• Petition grounds: The petition challenged claims 1-20 of US9933866B2 under 35 U.S.C. § 102 and § 103, leveraging prior art references including US2013/0106720 (Shahparnia) and US8031174 (Myers), among others.
• Institution decision: Denied on 2026-02-10. The PTAB exercised its discretion under 35 U.S.C. § 314(a) to deny institution, primarily citing the Fintiv factors. The panel found that the co-pending district court litigation in the Eastern District of Texas (case 2:24-cv-00702) heavily weighed against institution, particularly given the advanced stage of the district court case relative to the PTAB filing.
• Final Written Decision (if issued): Not applicable, as institution was denied.
• Settlement / termination: Not applicable, as institution was denied.
• Appeal: No appeal to the Federal Circuit was filed, as there was no final written decision on the merits.
• Defensive value: This proceeding offers no direct defensive value as no claims were invalidated. Instead, the discretionary denial indicates that a subsequent IPR on the same claims against the same petitioner (or its privies) would face similar Fintiv challenges if parallel district court litigation is ongoing and at a similar stage.

Strategic summary

All 20 claims of US9933866 remain UNTESTED by PTAB review. No claims have been canceled or sustained on the merits through an IPR. The sole proceeding, IPR2025-01495, was denied institution on discretionary grounds under Fintiv, not on the merits of patentability. This means the patent has not been narrowed through IPR.

Regarding the estoppel landscape, since IPR2025-01495 was denied institution on discretionary grounds rather than a final written decision on the merits, there is no statutory estoppel under 35 U.S.C. § 315(e)(2) for the petitioner (SHENZHEN QIANFENYI INTELLIGENT TECHNOLOGY CO., LTD.) or its privies. This implies that they are not barred from raising the same or reasonably could have raised grounds in other proceedings or forums, although any new IPR petition would likely encounter similar Fintiv challenges if co-pending litigation circumstances are unchanged.

There are no apparent pattern signals such as multiple IPRs from the same petitioner or aggressive PTAB appeals by the patent owner, Wacom Co Ltd. Unified Patents is noted as having filed the IPR, but it was denied.

Recommended next steps

• For a defendant facing assertion of this patent today, the fact that all claims remain untested by PTAB means the patent owner's claims have not been challenged on the merits in an AIA trial.
• Given the discretionary denial of IPR2025-01495, any new IPR petition would need to carefully consider the Fintiv factors, especially if there is co-pending district court litigation. Strategies to mitigate Fintiv risks (e.g., timing of petition, seeking a stay of litigation) would be crucial.
• The institution decision for IPR2025-01495 can be reviewed for detailed reasoning regarding the discretionary denial.
• The current assignee is Wacom Co Ltd.