PTAB challenges

Proceedings overview

One AIA trial proceeding has been filed against US Patent 9055254. This proceeding, IPR2024-00353, is listed as having a Final Written Decision (FWD) issued, with at least one claim having been invalidated. This outcome gives a defendant some defensive leverage, as any infringement theories relying solely on the invalidated claims are weakened.

IPR2024-00353 — Unified Patents LLC v. Multimedia Technologies Pte Ltd

• Type: Inter Partes Review
• Filed: Information not explicitly found in search results. However, the IPR number IPR2024-00353 indicates it was filed in fiscal year 2024 (which typically runs from October 1, 2023, to September 30, 2024).
• Status: Final Written Decision issued. The PTAB found at least one claim invalid.
• Judge panel: Not publicly available from the current search results.
• Petition grounds: Details on specific claims, prior art, and statutory bases (§ 102 / § 103 / § 112) are not publicly available from the current search results.
• Institution decision: Details are not publicly available from the current search results.
• Final Written Decision (issued prior to May 23, 2025): "Last week, the PTAB found that one of the claims in U.S. Patent No. 9,055,254 was also invalid, according to court records." The exact claim number(s) and the panel's reasoning are not detailed in the available snippets.
• Settlement / termination: No information about settlement or termination was found.
• Appeal: No information about a Federal Circuit appeal for IPR2024-00353 was found.
• Defensive value: At least one claim of US9055254 has been deemed invalid by the PTAB. A defendant facing assertion of this patent should investigate which specific claim(s) were invalidated. If the asserted claims overlap with the invalidated claims, the patent owner's case is significantly weakened for those claims, potentially rendering infringement theories built on them moot.

Strategic summary

Based on the available information, US Patent 9055254 has been subjected to at least one AIA trial proceeding, IPR2024-00353, initiated by Unified Patents LLC. The PTAB has issued a Final Written Decision in this IPR, invalidating at least one claim of the patent prior to May 23, 2025. The specific claims invalidated, the grounds for invalidation, and the judge panel are not publicly detailed in the provided search results. Multimedia Technologies Pte. Ltd. is identified as the patent owner, and has been involved in district court litigation against LG Electronics Inc. where this patent, among others, was asserted.

The fact that Unified Patents was the petitioner suggests a potential "defensive aggregator" strategy, where industry players collectively fund IPRs against patents they deem problematic. The outcome of IPR2024-00353, with at least one claim invalidated, indicates a partial victory for the petitioner and potentially for other parties in the relevant industry. Without the precise FWD, it's impossible to know which claims were challenged and which survived. The patent's remaining claims (those not challenged or those challenged but sustained) remain untested by this specific IPR.

Regarding estoppel, under 35 U.S.C. § 315(e)(2), Unified Patents and its privies would be estopped from raising any ground that they raised or reasonably could have raised in IPR2024-00353 against the claims determined to be patentable. Other potential defendants not privy to Unified Patents would not be directly bound by this estoppel. However, the invalidated claims themselves are typically canceled from the patent, meaning they can no longer be asserted against anyone.

Recommended next steps

For a defendant currently facing assertion of US Patent 9055254:

• Obtain the Final Written Decision for IPR2024-00353: It is crucial to immediately acquire the full Final Written Decision (FWD) for IPR2024-00353. This document will explicitly state which claims of US9055254 were found unpatentable and the specific reasoning and prior art relied upon by the PTAB. The FWD would typically be publicly available on the USPTO PTAB Decisions portal.
• Evaluate impact on asserted claims: Compare the claims being asserted against the defendant in any litigation or demand letter with the claims invalidated in the FWD. If any asserted claims were invalidated, those claims are canceled, significantly weakening or nullifying any infringement arguments based on them.
• Assess remaining claims: For any asserted claims that were not invalidated (either not challenged or challenged but found patentable), a new IPR petition could be considered, provided the defendant is not in privy with Unified Patents and has a strong prior art case.
• Jurisdiction of IPR: The IPR was filed in fiscal year 2024, indicating it falls under the "broadest reasonable interpretation" (BRI) standard for claim construction at the PTAB, which was applicable to IPRs filed before November 13, 2018. However, this patent (US9055254) was granted on 2015-06-09, so a 2024 IPR filing means it would be subject to the Phillips standard for claim construction. This is a point to confirm with the FWD.
• Monitor for Federal Circuit appeals: Keep an eye on the Federal Circuit's docket for any appeal stemming from IPR2024-00353, which would challenge the PTAB's FWD.
• District Court Outcome: Note that a federal jury in Texas cleared LG Electronics of infringement allegations for US9055254 and other related patents, also finding these patents invalid, on May 23, 2025. This district court finding, combined with the PTAB's invalidation of at least one claim, further strengthens the defensive posture against this patent. However, the district court's invalidity finding would likely be based on a "clear and convincing evidence" standard, which is different from the PTAB's "preponderance of the evidence" standard, and the Federal Circuit has clarified that IPR decisions do not automatically invalidate claims in district court.