PTAB challenges

Proceedings overview

There is one AIA trial proceeding filed against US Patent 12,231,703, which is currently pending. This means the patent's claims have not yet been challenged on the merits at the PTAB, offering a defendant a neutral defensive posture with potential for future invalidation.

IPR2026-00334 — Pinterest, Inc. v. OpenTV, Inc. et al.

• Type: Inter Partes Review
• Filed: 2026-04-06
• Status: Pending. The PTAB has not yet issued an institution decision or a final written decision.
• Judge panel: Not yet publicly available, as an institution decision has not been issued.
• Petition grounds: Specific claims, prior art, and statutory bases (§ 102 / § 103 / § 112) for the petition are not publicly available in the provided data. This information would typically be found in the filed petition document.
• Institution decision: Not yet issued. The PTAB will decide whether to institute the IPR within a statutory timeframe, typically one year from the petition's filing date.
• Final Written Decision: Not applicable, as the proceeding is pending.
• Settlement / termination: Not applicable, as the proceeding is pending.
• Appeal: Not applicable, as no final decision has been issued.
• Defensive value: This active IPR proceeding indicates that at least one party (Pinterest, Inc.) believes there are valid grounds to challenge the patentability of claims in US Patent 12,231,703. For a defendant facing assertion, the outcome of this IPR could significantly impact the strength of the patent. If claims are invalidated, it weakens the patent owner's position. If institution is denied or claims are sustained, it could strengthen the patent's defensive posture.

Strategic summary

Currently, all claims of US Patent 12,231,703 are UNTESTED at the PTAB, as the single filed IPR (IPR2026-00334) is still pending an institution decision. There are no claims that have been canceled or sustained through an AIA trial.

Regarding the estoppel landscape, if IPR2026-00334 is instituted and proceeds to a final written decision, Pinterest, Inc. (and its privies) would be estopped under § 315(e)(2) from raising any ground that was raised or reasonably could have been raised in that IPR against the claims challenged. For any other defendant, the prior art grounds remain available, subject to any other procedural bars (e.g., time-bar under § 315(b)).

There is no evident pattern of multiple IPRs filed by the same petitioner against this specific patent yet, as only one is active. However, it is noteworthy that OpenTV Inc. is identified as an operating company asserting its patent rights in district court litigation against Pinterest, Inc. (Case No. 1:25-cv-01404), and Pinterest, Inc. has subsequently filed this IPR. This suggests a reactive IPR filing in response to the district court litigation.

Recommended next steps

Since IPR2026-00334 is pending, a key milestone to watch is the institution decision deadline. The PTAB typically aims to issue an institution decision within 6 months of the petition filing date. Given the petition was filed on 2026-04-06, the institution decision is expected around 2026-10-06. The recent USPTO memos on discretionary institution, which consider factors like US manufacturing footprint and small business status, could play a role in this decision.

If the IPR is instituted, the PTAB has a statutory 1-year trial deadline from institution to issue a Final Written Decision.