PTAB challenges

Proceedings overview

US patent 10714890 is currently subject to one active Inter Partes Review (IPR) proceeding, IPR2026-00122, which has been instituted to trial. This means the validity of at least some claims is being formally challenged before the Patent Trial and Appeal Board (PTAB). For a defendant, this presents a significant opportunity, as the challenged claims are at risk of being invalidated; however, the outcome is still pending, so the patent's claims are not yet hardened or canceled.

IPR2026-00122 — Eoptolink Technology USA Inc. et al. v. Applied Optoelectronics Inc.

• Type: Inter Partes Review
• Filed: 2025-11-25
• Status: Trial Instituted. This means the PTAB has determined that there is a reasonable likelihood that at least one challenged claim is unpatentable and has authorized a full trial on the merits.
• Judge panel: Information not publicly available at this time.
• Petition grounds: Information regarding specific claims challenged, prior art cited, and statutory bases (§ 102 / § 103 / § 112) is not explicitly detailed in the provided data or readily available through general web search snippets for IPR2026-00122.
• Institution decision: The proceeding was instituted to trial, as indicated by its status. The specific date of institution and the panel's detailed reasoning are not explicitly provided in the available snippets, but an institution decision implies the petitioner met the "reasonable likelihood" standard for unpatentability.
• Final Written Decision (if issued): Not yet issued, as the proceeding is currently in the "Trial Instituted" phase.
• Settlement / termination: Not applicable yet, as the proceeding is active and in trial.
• Appeal: Not applicable yet, as no Final Written Decision has been issued.
• Defensive value: This proceeding indicates that at least some claims of US10714890 are currently under examination for validity by the PTAB. While the specific claims challenged are not known, if the IPR results in claim cancellation, it would significantly weaken any assertion built upon those claims. As the petitioner is "Eoptolink Technology USA Inc. et al.," and Unified Patents lists this case on their portal, it suggests a defensive aggregator or a company is actively challenging the patent.

Strategic summary

Currently, the patent US10714890 has one active IPR, IPR2026-00122, with a "Trial Instituted" status. This means that at least some claims of the patent are under active challenge, and their patentability is in question. There are no claims that have been definitively CANCELED or SUSTAINED by the PTAB yet. All claims remain patentable until a Final Written Decision dictates otherwise. Without knowing the specific claims challenged in IPR2026-00122, it's not possible to list claims that are "UNTESTED" in this specific IPR, but the IPR likely only targets a subset of the patent's 19 claims.

Regarding the estoppel landscape, since IPR2026-00122 is still ongoing, Section 315(e)(2) estoppel has not yet applied. If a Final Written Decision is issued, the petitioner (Eoptolink Technology USA Inc. et al.) and its privies would be barred from asserting, in any other civil action or ITC proceeding, any ground of unpatentability that they raised or reasonably could have raised during the IPR. For a potential defendant not privy to this IPR, most prior-art grounds would still be available until a Final Written Decision is issued, and even then, only for grounds not raised or reasonably raised by the petitioner.

A pattern signal is the involvement of "Unified Patents PTAB Data" which is explicitly licensed under a Creative Commons Attribution 4.0 International License on the Google Patents page, and the Unified Patents portal URL for the IPR. This suggests that a defensive aggregator like Unified Patents is involved, which often indicates a strategic challenge to patents that are either being asserted or are considered high-risk in specific technology areas.

Recommended next steps

Given that IPR2026-00122 is in the "Trial Instituted" phase, a defendant facing assertion of US10714890 should closely monitor this proceeding. The PTAB has a statutory deadline of one year from the institution date to issue a Final Written Decision.

Key milestones to watch for include:

• The scheduling of an oral hearing.
• The issuance of the Final Written Decision, which will determine the patentability of the challenged claims.

A defendant should investigate the specific claims challenged in IPR2026-00122 and the prior art asserted, as this information will be crucial for assessing the strength of the patent and any potential infringement theories. Information on the docket, including the petition and institution decision, can be found on the USPTO PTAB E2E system by searching for IPR2026-00122.