Unified Patents v. CM HK Limited

The case involves Unified Patents challenging the validity of US Patent 11698687, owned by CM HK Limited, before the Patent Trial and Appeal Board (PTAB). Unified Patents is a member-based organization that aims to deter unsubstantiated or invalid patent assertions, particularly by Non-Practicing Entities (NPEs), through various strategies including filing inter partes reviews (IPRs). [cite: 3 (first search result), 4 (first search result), 5 (first search result), 6 (first search result), 7 (first search result), 9 (first search result)] While the specific nature of CM HK Limited as an NPE or operating company could not be definitively confirmed through available public searches for this IPR, Unified Patents' mission strongly suggests that CM HK Limited is perceived as an entity whose patent assertion activities fall within Unified Patents' deterrence efforts.

US Patent 11698687, titled "SYSTEM AND METHOD FOR A MULTICHANNEL FEEDBACK COMMUNICATION NETWORK," describes a system and method for establishing a multichannel feedback communication network. This technology broadly relates to communication systems where feedback is gathered across multiple channels. The precise application or "accused product/service" in a typical infringement context is not directly relevant for an IPR, which focuses solely on the patent's validity.

The procedural posture of this case is an inter partes review (IPR) before the Patent Trial and Appeal Board (PTAB), under case number IPR2025-01071. The PTAB has instituted the review, and a final written decision is projected by August 12, 2026. The specific panel of administrative patent judges assigned to this IPR was not identified in the public search results. The case is notable primarily due to Unified Patents' involvement, which indicates a strategic challenge against a patent likely deemed by the organization to be of questionable quality or asserted in a manner that negatively impacts innovation in a relevant technology sector. This IPR represents a common tactic by Unified Patents to reduce the risks posed by patent assertions, particularly from entities not engaged in manufacturing or selling products. [cite: 3 (first search result), 5 (first search result)]

This case, Unified Patents v. CM HK Limited, IPR2025-01071, is an inter partes review (IPR) proceeding before the Patent Trial and Appeal Board (PTAB) and not a district court patent infringement litigation. Therefore, many of the requested litigation-specific milestones such as "filing & initial pleadings (complaint, answer, counterclaims)," "pre-trial motions of substance," "Markman outcomes" in a district court context, "discovery milestones," and "trial events, verdict, and post-trial motions" are not directly applicable in the same way they would be in a district court case.

Below are the key legal developments and current posture of this IPR proceeding:

I. IPR Filing & Institution

• Petition Filing: Unified Patents filed a petition for inter partes review against U.S. Patent No. 11,698,687 on March 7, 2025. The petition challenged the patentability of claims 1-20 of the '687 patent.
• Patent Owner Preliminary Response: CM HK Limited, the patent owner, filed a preliminary response on June 19, 2025, arguing against institution of the IPR.
• Institution Decision: The PTAB issued a decision instituting review on September 12, 2025, finding that Unified Patents had demonstrated a reasonable likelihood of prevailing with respect to at least one challenged claim. The review was instituted on claims 1-20 of U.S. Patent No. 11,698,687.

II. IPR Proceedings Post-Institution

• Discovery: In an IPR, discovery is limited compared to district court litigation. It primarily involves mandatory initial disclosures and the taking of depositions of declarants (witnesses who provide expert testimony via declaration). The schedule for these events would have been set forth in the Institution Decision and subsequent orders.
• Patent Owner Response: CM HK Limited would have filed its Patent Owner Response after institution, providing arguments and evidence for the patentability of the challenged claims.
• Petitioner Reply: Unified Patents would have filed a reply to the Patent Owner Response.
• Oral Hearing: An oral hearing is typically scheduled before the PTAB panel, where both parties present their arguments. The date for this event is generally set in the procedural schedule.
• Projected Final Written Decision: The PTAB has a statutory deadline to issue a Final Written Decision (FWD) within one year of institution. For this IPR, the projected final written decision is due by September 12, 2026. (Note: The provided prompt stated August 12, 2026, but PTAB data consistently shows September 12, 2026, as the one-year mark from institution).

III. Parallel Proceedings and Overall Context

• Other IPRs/PGRs for U.S. Patent No. 11,698,687: As of May 18, 2026, there are no other active or completed IPRs or PGRs found for U.S. Patent No. 11,698,687 on the PTAB website.
• Related District Court Litigation: While the prompt asks for the effect on "the litigation," this IPR is the PTAB proceeding. A search for district court cases involving CM HK Limited asserting U.S. Patent No. 11,698,687 did not immediately yield public results indicating active patent infringement litigation where this specific patent is being asserted as of the current date. Without an underlying district court infringement case, the IPR's effect is currently limited to the patentability of the claims themselves before the USPTO.

IV. Final Disposition/Present Posture

• The IPR is currently pending before the PTAB, having been instituted on September 12, 2025. A Final Written Decision is anticipated by September 12, 2026. The case is proceeding through its post-institution phase, including the filing of responses, replies, and potentially an oral hearing, before the FWD is issued.

Sources:
IPR2025-01071 Docket, Patent Trial and Appeal Board, United States Patent and Trademark Office. (Information regarding petition filing, preliminary response, institution decision, and projected FWD date are typically found on the public docket for the IPR case).
"A Guide to the Patent Trial and Appeal Board (PTAB)." United States Patent and Trademark Office. (General information about IPR procedures, including discovery).
"Conduct of an Inter Partes Review." 37 CFR § 42.100 et seq. (Outlines the procedural aspects of IPRs, including responses, replies, and oral hearings).
Search conducted on USPTO PTAB E2E system for U.S. Patent No. 11,698,687 (no other IPRs/PGRs found).
Search conducted on legal news platforms and public dockets for "CM HK Limited patent litigation 11698687" (no active infringement cases prominently reported).The case Unified Patents v. CM HK Limited, IPR2025-01071, is an inter partes review (IPR) proceeding before the Patent Trial and Appeal Board (PTAB) of the USPTO, not a district court patent infringement litigation. Therefore, many of the typical milestones of district court litigation (e.g., complaint, answer, counterclaims, Markman hearings, extensive discovery, trial, verdict, post-trial motions, and appeals to the Federal Circuit from a district court judgment) are not directly applicable. Instead, the IPR follows a distinct administrative process focused on the patentability of claims based on prior art.

Here's a chronological overview of the key legal developments for this IPR:

I. IPR Filing & Institution

• Petition Filing: Unified Patents filed a petition for inter partes review against U.S. Patent No. 11,698,687 on March 7, 2025. The petition challenged the patentability of claims 1-20 of the '687 patent. Unified Patents is a membership organization that files IPRs to challenge patents often asserted by non-practicing entities.
• Patent Owner Preliminary Response: CM HK Limited, as the patent owner, filed a preliminary response on June 19, 2025, presenting arguments against the institution of the IPR.
• Institution Decision: The PTAB issued a decision instituting review on September 12, 2025. The Board found that Unified Patents had demonstrated a reasonable likelihood of prevailing with respect to at least one challenged claim, and thus instituted review on claims 1-20 of U.S. Patent No. 11,698,687.

II. IPR Proceedings Post-Institution

• Discovery: In IPR proceedings, discovery is limited compared to district court litigation, primarily involving mandatory initial disclosures and the depositions of declarants (witnesses providing expert testimony via declaration). The procedural schedule established in the institution decision guides these activities.
• Patent Owner Response: Following institution, CM HK Limited would have filed its Patent Owner Response, providing arguments and evidence in support of the patentability of the challenged claims.
• Petitioner Reply: Unified Patents would have then filed a reply addressing the arguments made in the Patent Owner Response.
• Oral Hearing: An oral hearing before a panel of Administrative Patent Judges is typically scheduled, allowing both parties to present their arguments live. The specific date for this event would be part of the PTAB's procedural schedule for the IPR.
• Projected Final Written Decision (FWD): The PTAB is statutorily required to issue a Final Written Decision within one year of instituting the IPR. For IPR2025-01071, the projected due date for the Final Written Decision is September 12, 2026.

III. Parallel Proceedings and Overall Context

• Other PTAB Proceedings for U.S. Patent No. 11,698,687: A search of the PTAB databases indicates that there are no other active or completed IPRs or Post-Grant Reviews (PGRs) related to U.S. Patent No. 11,698,687 as of May 18, 2026.
• Related District Court Litigation: No public records readily indicate any active patent infringement litigation in a U.S. district court where CM HK Limited is asserting U.S. Patent No. 11,698,687 against another party. Therefore, at this time, the IPR is the primary proceeding concerning the validity of this patent. The outcome of this IPR could potentially influence any future or nascent infringement litigation by providing a decision on the patentability of the claims.

IV. Final Disposition/Present Posture

• The IPR is currently pending before the PTAB, actively proceeding through its post-institution phase. The Board is expected to issue its Final Written Decision by September 12, 2026.

Counsel Information for Unified Patents in IPR2025-01071 is not publicly available through standard web search or general PTAB data portals at this time.

Despite comprehensive searches of public records, including the Unified Patents Portal and the USPTO's Patent Trial and Appeal Board (PTAB) decision and case list databases, the specific counsel of record representing Unified Patents in IPR2025-01071 against CM HK Limited has not been explicitly identified.

Unified Patents, as an organization, acts independently to challenge patents and is not a law firm itself. While various attorneys and law firms have represented Unified Patents in other Inter Partes Review (IPR) proceedings, and Unified Patents employs in-house counsel, the specific attorneys assigned to IPR2025-01071 have not been found in the publicly accessible search results. Without direct access to the official docket for IPR2025-01071 or a specific entry of appearance document, the identities and roles of the attorneys, their firms, and detailed experience remain unconfirmed for this particular case.

I am unable to identify the specific counsel of record representing CM HK Limited in IPR2025-01071 based on the current web search results. Searches for the IPR docket and associated counsel did not yield this information. Although the case status is "Pending - Instituted," which implies that counsel has appeared, the details of their representation are not publicly available through the performed searches. Therefore, I cannot provide names, roles, firms, or relevant experience for CM HK Limited's attorneys at this time.