PTAB challenges

Despite the USPTO Open Data Portal (ODP) API not currently reflecting any AIA trial proceedings for US Patent 9,247,174, web searches and the provided litigation summary indicate that this patent has been subject to at least three Inter Partes Review (IPR) proceedings.

Proceedings overview

US Patent 9247174 has been challenged in three IPRs. In IPR2024-00352, all challenged claims were sustained. The outcomes of IPR2024-00694 and IPR2024-00699 are not explicitly detailed in the provided information or readily available via a quick search, but they were filed by VIZIO. This gives a defendant a mixed defensive posture: one IPR attempt to invalidate claims has failed, strengthening the patent's validity against similar challenges, while the status of the other two VIZIO IPRs remains to be fully determined.

IPR2024-00352 — LG Electronics, Inc. v. Multimedia Technologies Pte. Ltd.

• Type: Inter Partes Review
• Filed: Specific filing date not provided, but the Final Written Decision was issued in April 2025.
• Status: Claims sustained. The PTAB upheld all challenged claims of US Patent No. 9,247,174. The proceeding is noted as "Pending" in some databases, likely reflecting ongoing appeal processes or related actions.
• Judge panel: Information not publicly detailed in the provided data.
• Petition grounds: Specific claims and prior art grounds are not detailed in the provided information.
• Institution decision: The proceeding led to a Final Written Decision, implying institution occurred. Details of the institution decision are not provided.
• Final Written Decision: Issued in April 2025. The PTAB upheld all challenged claims of U.S. Patent No. 9,247,174. The precise claims challenged are not specified in the provided summary.
• Settlement / termination: Not applicable, as a Final Written Decision was issued upholding claims.
• Appeal: The prior litigation summary indicates an appeal in the district court case against LG was filed with the Court of Appeals for the Federal Circuit (Docket: 26-1705, Filed: April 21, 2026), which may be related to or influenced by this IPR outcome, or could be a separate appeal of the district court's invalidity finding.
• Defensive value: This proceeding significantly hardens the patent against challenges based on the grounds raised by LG. Since all challenged claims were sustained, an IPR-based defense on the same grounds will be considerably more difficult for future defendants.

IPR2024-00694 — VIZIO, Inc. v. Multimedia Technologies Pte. Ltd.

• Type: Inter Partes Review
• Filed: 2024-03-13
• Status: Outcomes are not detailed in the provided search results or easily found. Given the filing date of March 13, 2024, and the current date of June 1, 2026, a Final Written Decision (FWD) should have been issued by March 13, 2025 (statutory one-year deadline for IPRs from institution), unless there was an extension or settlement. The absence of specific outcome details suggests it may have settled before FWD or the FWD is not yet widely reported/indexed.
• Judge panel: Information not publicly detailed in the provided data.
• Petition grounds: Specific claims and prior art grounds are not detailed in the provided information.
• Institution decision: Details are not provided.
• Final Written Decision (if issued): Not detailed in the provided information.
• Settlement / termination: Not detailed in the provided information.
• Appeal: Not detailed in the provided information.
• Defensive value: The outcome of this IPR is currently unknown. If it resulted in claim invalidation, it would provide strong defensive value. If institution was denied or claims were upheld, it would strengthen the patent. Without specific information, its defensive value is uncertain for now.

IPR2024-00699 — VIZIO, Inc. v. Multimedia Technologies Pte. Ltd.

• Type: Inter Partes Review
• Filed: 2024-03-13
• Status: Outcomes are not detailed in the provided search results or easily found. Similar to IPR2024-00694, a Final Written Decision (FWD) should have been issued by March 13, 2025 (statutory one-year deadline for IPRs from institution), unless there was an extension or settlement. The absence of specific outcome details suggests it may have settled before FWD or the FWD is not yet widely reported/indexed.
• Judge panel: Information not publicly detailed in the provided data.
• Petition grounds: Specific claims and prior art grounds are not detailed in the provided information.
• Institution decision: Details are not provided.
• Final Written Decision (if issued): Not detailed in the provided information.
• Settlement / termination: Not detailed in the provided information.
• Appeal: Not detailed in the provided information.
• Defensive value: The outcome of this IPR is currently unknown. Similar to IPR2024-00694, its defensive value is uncertain without specific outcome information.

Strategic summary

Based on the available information, the validity landscape for US Patent 9247174 is as follows:

• Claims Sustained: All claims challenged in IPR2024-00352 were upheld by the PTAB. The specific claim numbers are not provided, but it implies that the claims targeted in that IPR survived review.
• Claims Untested / Outcome Unknown: The claims challenged in IPR2024-00694 and IPR2024-00699 have an unknown outcome from the PTAB proceedings. Without the Final Written Decisions for these cases, it's impossible to determine if any claims were canceled or upheld.

Estoppel landscape: For LG Electronics Inc. (and its privies), they are likely estopped under § 315(e)(2) from asserting invalidity grounds in district court that they raised or reasonably could have raised in IPR2024-00352 against the sustained claims. The same would apply to VIZIO Inc. (and its privies) for IPR2024-00694 and IPR2024-00699 once those proceedings have reached a final outcome. For other potential defendants, prior art grounds not addressed in IPR2024-00352 (or in the Vizio IPRs if claims were upheld) would still be available.

Pattern signals: Multimedia Technologies Pte. Ltd. has aggressively defended its patent rights, as evidenced by the successful defense of claims in IPR2024-00352. The filing of multiple IPRs by VIZIO suggests a robust challenge strategy from the defendant's side. The "Pending" status for IPR2024-00352 after an FWD could indicate an appeal to the Federal Circuit by LG, demonstrating a continued fight over the patent's validity or infringement.

Recommended next steps

For IPR2024-00352, where claims were sustained, a defendant would face a higher hurdle if attempting to challenge the same claims on the same or substantially similar prior art. The PTAB's decision to uphold the claims strengthens the patent owner's position.

For IPR2024-00694 and IPR2024-00699, it is critical to obtain the Final Written Decisions (FWDs) to understand the claim-level outcomes. Given the filing dates in March 2024, the FWDs should have been issued by March 2025. Accessing these decisions from the USPTO PTAB Decisions database or CourtListener would be the immediate next step. If an FWD for either IPR resulted in claims being canceled, it would significantly alter the defensive posture for any defendant being asserted against. If no FWD exists, it suggests a settlement, which would involve confidential terms but could still impact the patent's enforceability or value.

• Action: Search the USPTO PTAB Decisions portal for "IPR2024-00694" and "IPR2024-00699" to locate Final Written Decisions or other terminating documents.
• URL for PTAB Decisions: https://ptab.uspto.gov/ptab-decisions
• Action: Investigate the status of the appeal for the LG District Court case (CAFC Docket: 26-1705) to see if the IPR outcome or the District Court's invalidity finding is being reviewed.
• URL for Federal Circuit Docket: https://www.cafc.uscourts.gov/docket-search

Without the outcomes of IPR2024-00694 and IPR2024-00699, a definitive assessment of the patent's current strength and the estoppel implications for VIZIO (and potentially other parties) cannot be fully made. The absence of PTAB activity in the ODP API despite known IPRs indicates a lag in data indexing or a need for direct database searching.

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Note: The provided "PTAB proceedings on file" section explicitly stated "The USPTO ODP API returns no AIA trial proceedings for this patent as of the most recent ingest." However, the "Litigation summary" section, also provided in the prompt, listed specific IPR proceedings (IPR2024-00352, IPR2024-00694, IPR2024-00699). This analysis prioritizes the detailed IPR information from the "Litigation summary" as direct evidence of proceedings, acknowledging the contradiction with the ODP API status.

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Search Results for Reference:

• "PTAB case IPR2024-00352 filed (Final Written Decision) litigation Critical https://portal.unifiedpatents.com/ptab/case/IPR2024-00352 Petitioner: "Unified Patents PTAB Data" by Unified Patents is licensed under a Creative Commons Attribution 4.0 International License. PTAB case IPR2024-00696 filed (Final Written Decision) litigation https://portal.unifiedpatents.com/ptab/case/IPR2024-00696 Petitioner: "Unified Patents PTAB Data" by Unified Patents is licensed under a Creative Commons Attribution 4.0 International License." (This snippet from Google Patents page references IPR2024-00352 and IPR2024-00696, but IPR2024-00696 is not in the provided litigation summary, while IPR2024-00699 and IPR2024-00694 are). I will use IPR2024-00352, IPR2024-00694, and IPR2024-00699 as explicitly stated in the litigation summary provided.
• The "Litigation summary" in the prompt explicitly states for IPR2024-00352: "In April 2025, the PTAB upheld all the claims of U.S. Patent No. 9,247,174 that LG had challenged." and for IPR2024-00699, IPR2024-00694: "Filing Date: March 13, 2024". The initial searches did not yield additional public FWD details for IPR2024-00694 and IPR2024-00699.## Proceedings overview
  US Patent 9247174 has been challenged in three Inter Partes Review (IPR) proceedings. In IPR2024-00352, all challenged claims were sustained. The specific outcomes of IPR2024-00694 and IPR2024-00699, both filed by VIZIO, are not detailed in the provided information, suggesting they may have settled, been denied institution, or their Final Written Decisions are not yet widely indexed or publicly summarized. This presents a mixed defensive posture: one IPR attempt to invalidate claims has failed, strengthening the patent's validity against similar challenges, while the status of the other two VIZIO IPRs requires further investigation.

IPR2024-00352 — LG Electronics, Inc. v. Multimedia Technologies Pte. Ltd.

• Type: Inter Partes Review
• Filed: The exact filing date is not explicitly stated, but the Final Written Decision was issued in April 2025, implying a filing sometime in 2024.
• Status: Claims sustained. The PTAB upheld all claims of U.S. Patent No. 9,247,174 that LG had challenged. The proceeding is noted as "Pending" in some databases, which may indicate an ongoing appeal process or related post-decision actions.
• Judge panel: Information regarding the specific Administrative Patent Judges (APJs) on the panel is not publicly available in the provided text.
• Petition grounds: The specific claims challenged and the prior art relied upon, along with the statutory bases (§ 102 / § 103 / § 112), are not detailed in the provided information.
• Institution decision: The issuance of a Final Written Decision indicates that the PTAB granted institution of the IPR. The date and specific reasoning for institution are not provided.
• Final Written Decision: Issued in April 2025. The PTAB found all challenged claims of US Patent No. 9,247,174 to be patentable (i.e., not invalid). The summary does not specify which particular claims were challenged or upheld.
• Settlement / termination: The proceeding was concluded by a Final Written Decision on the merits, not by settlement.
• Appeal: The provided "Litigation summary" indicates that an appeal related to the district court case (2:22-cv-00494) involving LG and the '174 patent was filed with the Court of Appeals for the Federal Circuit (Docket: 26-1705) on April 21, 2026. This appeal may include challenges related to the PTAB's IPR decision or the district court's separate invalidity findings.
• Defensive value: This IPR significantly strengthens the patent owner's position for the claims that were challenged and sustained. Any future defendant facing assertion of these claims would find an IPR-based invalidity defense, using the same or substantially similar prior art grounds, much more difficult to pursue due to the PTAB's prior ruling.

IPR2024-00694 — VIZIO, Inc. v. Multimedia Technologies Pte. Ltd.

• Type: Inter Partes Review
• Filed: 2024-03-13
• Status: The specific outcome of this proceeding is not detailed in the provided information. Given the filing date of March 13, 2024, and the statutory one-year deadline for IPRs from institution, a Final Written Decision (FWD) would typically have been due by March 13, 2025 (or shortly thereafter if an extension was granted). The absence of an explicit FWD outcome suggests that the petition may have been denied institution, or the case may have settled prior to an FWD, or the FWD is not yet publicly summarized.
• Judge panel: Information not publicly detailed in the provided data.
• Petition grounds: Specific claims challenged, prior art, and statutory bases are not detailed in the provided information.
• Institution decision: Not detailed in the provided information.
• Final Written Decision (if issued): Not detailed in the provided information.
• Settlement / termination: Not detailed in the provided information.
• Appeal: Not detailed in the provided information.
• Defensive value: The defensive value of this proceeding is currently unknown. If institution was denied or claims were upheld, it would increase the patent's robustness. If claims were invalidated, it would provide strong defensive leverage. Further investigation is required to ascertain the outcome.

IPR2024-00699 — VIZIO, Inc. v. Multimedia Technologies Pte. Ltd.

• Type: Inter Partes Review
• Filed: 2024-03-13
• Status: The specific outcome of this proceeding is not detailed in the provided information. Similar to IPR2024-00694, a Final Written Decision (FWD) would typically have been due by March 13, 2025. The lack of an explicit FWD outcome suggests the possibility of denial of institution, settlement, or an unindexed FWD.
• Judge panel: Information not publicly detailed in the provided data.
• Petition grounds: Specific claims challenged, prior art, and statutory bases are not detailed in the provided information.
• Institution decision: Not detailed in the provided information.
• Final Written Decision (if issued): Not detailed in the provided information.
• Settlement / termination: Not detailed in the provided information.
• Appeal: Not detailed in the provided information.
• Defensive value: The defensive value of this proceeding is currently unknown. Its impact on the patent's validity hinges on whether institution was granted and, if so, the outcome of any Final Written Decision.

Strategic summary

Based on the available information, the validity status of claims for US9247174 can be summarized as follows:

• Claims Sustained: All claims challenged in IPR2024-00352 were found patentable by the PTAB. The specific claims are not identified in the provided summary.
• Claims Untested / Outcome Unknown: The claims targeted in IPR2024-00694 and IPR2024-00699 (filed by VIZIO) have an undisclosed outcome. Without the Final Written Decisions or other definitive public records for these cases, it is not possible to determine if any claims were canceled, upheld, or if institution was denied.

Estoppel landscape: LG Electronics, Inc., and parties in privity with it, are likely estopped under 35 U.S.C. § 315(e)(2) from asserting invalidity grounds in subsequent district court litigation that were raised or reasonably could have been raised against the sustained claims in IPR2024-00352. A similar estoppel would apply to VIZIO, Inc. (and its privies) for IPR2024-00694 and IPR2024-00699, once the final disposition of those proceedings is known. For other potential defendants, any prior art grounds not presented or addressed in these IPRs would generally remain available.

Pattern signals: Multimedia Technologies Pte. Ltd. successfully defended its patent against LG's IPR challenge, indicating a robust patent and/or an effective defense strategy. The multiple IPR filings by VIZIO against the same patent suggest a determined effort by VIZIO to challenge its validity. The "Pending" status of IPR2024-00352 after the FWD also indicates that the patent owner or petitioner may be pursuing Federal Circuit review of the PTAB's decision.

Recommended next steps

• Investigate VIZIO IPR outcomes: For IPR2024-00694 and IPR2024-00699, it is crucial to obtain the Final Written Decisions (FWDs) or institution decisions to understand the precise outcome for each challenged claim. These documents would determine if any claims were invalidated, upheld, or if the petitions were denied institution. This information is critical for any defendant currently facing assertion of the patent.
  • Action: Search the USPTO PTAB Decisions portal for "IPR2024-00694" and "IPR2024-00699" to locate the definitive dispositions.
  • URL: https://ptab.uspto.gov/ptab-decisions
• Monitor CAFC appeal: Track the status and issues on appeal for the LG case at the Federal Circuit (Docket: 26-1705). The outcome of this appeal could further clarify the patent's validity or the scope of its claims.
  • URL: https://www.cafc.uscourts.gov/docket-search

The absence of detailed PTAB information from the ODP API indicates a potential delay in data availability, and direct searching of PTAB databases is necessary for a complete picture.