Inter Partes Review (Petitioner Unspecified) against US7894385

This Inter Partes Review (IPR) case, IPR2025-01569, involves an unspecified petitioner challenging U.S. Patent No. 7,894,385, owned by Dynamic Mesh Networks, Inc. d/b/a MeshDynamics. Dynamic Mesh Networks is an operating company specializing in mission-critical, high-performance wireless mesh networking software and solutions, particularly for IoT, enterprise, government, and defense applications. While primarily an operating entity, MeshDynamics also actively asserts its substantial patent portfolio, engaging in licensing partnerships and patent litigation. The petitioner's identity remains unspecified in the public record for this particular IPR, likely due to the procedural denial.

The patent at issue, U.S. Patent No. 7,894,385 (the '385 patent), pertains to a "system and method for dynamically adjusting routing based on real-time sampling and scanning of parent nodes while avoiding packet loss and maintaining network performance" within mobile mesh networks. Although IPRs directly challenge patentability rather than infringement, the '385 patent is among several patents asserted by Dynamic Mesh Networks against Cisco Systems, Inc. in ongoing district court litigation in the Eastern District of Texas (e.g., Civil Action No. 2:25-cv-781) and other venues. The underlying accused technology in these related infringement suits would therefore involve Cisco's wireless networking products and services that utilize mesh network architectures and support mobile nodes.

The procedural posture of IPR2025-01569 is before the Patent Trial and Appeal Board (PTAB), where the petition was "Not Instituted - Procedural." This indicates that the PTAB exercised its discretion to deny institution, rather than reaching the merits of the patentability challenge. Such procedural denials often arise from factors related to parallel district court litigation, such as the Fintiv factors (considering the proximity of a district court trial, investment in the parallel proceeding, and overlap of issues), or due to issues with real party in interest identification, or other evolving administrative rules and stipulations. This case is notable because it highlights Dynamic Mesh Networks' dual strategy of operating and asserting patents in the competitive wireless networking space. Furthermore, the "Not Instituted - Procedural" outcome contributes to the significant body of PTAB jurisprudence on discretionary denials, underscoring the PTAB's evolving application of its discretionary authority, especially when intertwined with parallel infringement suits against major technology companies like Cisco.

The information provided describes an Inter Partes Review (IPR) proceeding, IPR2025-01569, before the Patent Trial and Appeal Board (PTAB) concerning U.S. Patent No. 7,894,385, with Dynamic Mesh Networks, Inc. as the Patent Owner. The status of this IPR is "Not Instituted - Procedural."

An IPR is a proceeding distinct from a patent infringement litigation in a district court. The provided details pertain solely to the IPR. While IPRs are often filed in response to or in anticipation of patent infringement litigation, the provided information does not include details of an underlying district court case.

To determine if there is a related patent infringement litigation, a search was conducted for district court cases involving U.S. Patent No. 7,894,385 and Dynamic Mesh Networks, Inc.

No public records of a patent infringement litigation in a district court directly corresponding to the "filing & initial pleadings," "pre-trial motions," "claim construction," "discovery milestones," "trial events," or "settlement, dismissal, judgment, or appeal" for U.S. Patent No. 7,894,385 with Dynamic Mesh Networks, Inc. as a named party (either plaintiff or defendant) that proceeded to a substantive stage, could be identified based on the available information and web searches. It's possible such a case exists under a sealed docket, has not been publicly reported, or was resolved very early, or the IPR was filed pre-emptively.

Therefore, for the specific IPR2025-01569, the key legal developments and outcome are limited to the PTAB proceeding:

• Parallel PTAB IPR/PGR proceedings:
  • An Inter Partes Review (IPR) petition, IPR2025-01569, was filed against U.S. Patent No. 7,894,385.
  • The Patent Owner is Dynamic Mesh Networks, Inc.
  • The PTAB ultimately issued a decision not to institute the IPR on procedural grounds. The specific date of the non-institution decision is not available in the provided summary, but the case status reflects this outcome.

Due to the non-institution of the IPR, the proceeding did not advance to substantive issues like a trial before the PTAB or a final written decision on patentability.
The provided information and subsequent searches do not indicate an active or concluded district court patent infringement litigation for U.S. Patent No. 7,894,385.

The search results for "IPR2025-01569 PTAB docket" did not directly yield the specific docket for IPR2025-01569 or the petitioner's counsel. However, I found several related IPRs involving Dynamic Mesh Networks, Inc. as the Patent Owner, and one of these, IPR2025-01523, mentions Dynamic Mesh Networks, Inc. as the real party-in-interest and provides counsel information for the Patent Owner. It also mentions related district court cases where Cisco Systems, Inc. is involved with Dynamic Mesh Networks, Inc..

The initial prompt states "Inter Partes Review (Petitioner Unspecified) against US7894385" and "Status: Not Instituted - Procedural". This suggests the petition may not have advanced to a stage where petitioner's counsel is clearly identified in public summaries or easily searchable documents, especially if it was dismissed on procedural grounds before institution.

The search results for "IPR2025-01569 PTAB docket" did not directly yield the counsel for the petitioner in IPR2025-01569. It did, however, provide information for other IPRs involving Dynamic Mesh Networks, Inc. as the Patent Owner, such as IPR2025-01523 and IPR2025-01304, where Cisco Systems, Inc. is the Petitioner.

In IPR2025-01523, Dynamic Mesh Networks, Inc. is the Patent Owner, and their counsel is listed.
In IPR2025-01304, Cisco Systems, Inc. is the Petitioner, and "Cho, Taeg Sang et al." are listed as Petitioner Counsel. This is for a different IPR case number and patent, US7885243, not US7894385.

Given that the prompt specifies "Petitioner Unspecified" for IPR2025-01569, and the status is "Not Instituted - Procedural," it's highly likely that the public record of this specific IPR does not readily disclose the petitioner's identity or counsel in a summary form. The "Not Instituted - Procedural" status suggests the case may have been dismissed early, perhaps without fully publicizing the petitioner's details.

The question asks for counsel representing the plaintiff(s) in this patent infringement case. In the context of an IPR, the plaintiff is the Petitioner. Since the Petitioner is unspecified in the prompt for IPR2025-01569, and my direct searches for counsel for this specific IPR have not yielded results, I need to state that the counsel for the Petitioner in IPR2025-01569 cannot be identified from the available information, consistent with the "Petitioner Unspecified" status and procedural non-institution.

It is possible that Dynamic Mesh Networks, Inc. is the defendant in a separate district court patent infringement case, and the IPR (IPR2025-01569) was filed against the patent they are asserting in that district court case. The search results show Cisco Systems, Inc. as a plaintiff against Dynamic Mesh Networks, Inc. in district court case 5:25-cv-06441 (NDCA) and Dynamic Mesh Networks, Inc. as a plaintiff against Cisco Systems, Inc. in 2:25-cv-00781 (EDTX). However, the prompt specifically asks about the plaintiff(s) in this patent infringement case referring to "IPR2025-01569". This is confusing because an IPR is not a patent infringement case.

Assuming the question is specifically about counsel for the Petitioner in IPR2025-01569, given the "Petitioner Unspecified" and "Not Instituted - Procedural" status, it's highly unlikely I will find named counsel for the Petitioner without access to the actual petition filing which is not publicly available in detail through the general search.

If the question implies a broader context and Dynamic Mesh Networks, Inc. is a defendant in a patent infringement case, then the "plaintiff" would be the party suing Dynamic Mesh Networks, Inc. for infringement. Cisco Systems, Inc. is a plaintiff in at least one such case (5:25-cv-06441). However, the prompt states the case is "Inter Partes Review (Petitioner Unspecified) against US7894385" with case number IPR2025-01569.

I will stick to the IPR context, and since the Petitioner is unspecified and the case was not instituted, I will state that the counsel for the Petitioner in IPR2025-01569 cannot be identified.

Let me make one more attempt to find if the petitioner was eventually identified or if counsel information was released despite the "Not Instituted - Procedural" status for IPR2025-01569.
Since the prior search results for IPR2025-01569 did not yield the Petitioner's counsel and the status is "Not Instituted - Procedural" with "Petitioner Unspecified," it is unlikely that this information is publicly available in a general search. The search results provided counsel for the Patent Owner (Dynamic Mesh Networks, Inc.) in a different IPR (IPR2025-01523) and counsel for a Petitioner (Cisco Systems, Inc.) in another IPR (IPR2025-01304), but not for IPR2025-01569.

Given the constraints and the provided case metadata, I cannot identify the counsel for the Petitioner (the "plaintiff" in the IPR context) in IPR2025-01569.The provided search results did not explicitly identify the Petitioner or their counsel for IPR2025-01569. The status "Not Instituted - Procedural" along with "Petitioner Unspecified" in the prompt suggests that this information may not be publicly available or was not fully disclosed before the procedural dismissal.

While I found other IPRs involving Dynamic Mesh Networks, Inc. where the petitioner (Cisco Systems, Inc.) and their counsel were identified for other patent numbers (e.g., IPR2025-01304 concerning US7885243 and IPR2025-01523), this information does not directly apply to IPR2025-01569 and US7894385.

Therefore, based on the information available, the counsel of record representing the petitioner (the "plaintiff" in an IPR) in IPR2025-01569 cannot be identified.The counsel of record representing the plaintiff(s) in IPR2025-01569 cannot be identified from publicly available information. The case metadata indicates that the "Petitioner [is] Unspecified" and the "Status: Not Instituted - Procedural". In an Inter Partes Review (IPR), the petitioner is the party challenging the patent, effectively acting as the "plaintiff" in the context of the validity challenge. Due to the unspecified petitioner and the procedural non-institution, details regarding the petitioner's counsel are not readily available in public records.

I'll research the counsel representing the patent owner (the "defendant" party) in this IPR and related proceedings.

Key finding: the petitioner is actually Cisco Systems, Inc. (not unspecified), and Dynamic Mesh Networks is the respondent/patent owner. Let me pin down its counsel.

Counsel of Record — "Defendant" Party (Dynamic Mesh Networks, Inc. d/b/a MeshDynamics)

Threshold clarification (important): This docket is an IPR, not a district‑court infringement case, and the case metadata designates Dynamic Mesh Networks, Inc. d/b/a MeshDynamics as the "Defendant(s)." In PTAB terms, Dynamic Mesh is the Patent Owner / Respondent. So the attorneys below are the ones representing the party the prompt calls the defendant. I then also list the counsel representing Dynamic Mesh in the parallel district‑court suits, since that is where "defendant" counsel would normally be sought.

A. Counsel in IPR2025-01569 itself (Patent Owner / Respondent)

Source: Patent Owner Preliminary Response filed Dec. 18, 2025 in IPR2025‑01569 (signature and certificate‑of‑service blocks), and the PTAB decision/service list in IPR2025‑01569 mailed Feb. 18, 2026, each showing Patent Owner counsel as "Elizabeth Bernard, Erin Hadi, DAIGNAULT IYER LLP." Docket aggregators (Docket Alarm; IPVerse case page for IPR2025‑01569) likewise list "Respondent Counsel — Bernard, Elizabeth et al." I did not find a separate PTAB power‑of‑attorney page naming anyone else for the Patent Owner.

For completeness on the other side (Petitioner — the party that would be "plaintiff" in the IPR framing): Haynes and Boone, LLP — Theodore M. Foster, David L. McCombs, Calmann J. Clements, Brett Bostrom, Matthew Beck, Dagim Tilahun (per the same IPR2025‑01569 service list); Desmarais LLP also corresponded for Cisco across this IPR family (Sotera stipulation letter dated Oct. 15, 2025 addressed to Ms. Bernard).

B. Counsel for Dynamic Mesh Networks in the parallel district court litigation

These are the appearances that exist because the '385 patent is one of the patents MeshDynamics asserted against Cisco (EDTX), and Cisco's mirror‑image declaratory judgment action (N.D. Cal.).

Eastern District of Texas — Dynamic Mesh Networks, Inc. d/b/a MeshDynamics v. Cisco Systems, Inc., No. 2:25‑cv‑00781 (lead) / 2:25‑cv‑00783 (consolidated), Judge Rodney Gilstrap:

• Elizabeth Bernard (Daignault Iyer LLP, Vienna, VA) — Lead Counsel for Plaintiff MeshDynamics (so designated in the Dec. 18, 2025 stipulation of dismissal with prejudice as to the '537 patent).
• Scott R. Samay (Daignault Iyer LLP, Vienna, VA) — principal MeshDynamics patent litigator; also counsel in ParkerVision v. Realtek (W.D. Tex. 6:23‑cv‑00374) and other Daignault Iyer patent campaigns.
• Jason S. Charkow (Daignault Iyer LLP) — MeshDynamics trial team; also ParkerVision v. Realtek.
• Lisa N. Phillips (Daignault Iyer LLP) — MeshDynamics team (appeared pro hac vice Aug. 14, 2025).
• Taylor G. Lepore (Daignault Iyer LLP) — MeshDynamics team.
• Louay Meroueh (Daignault Iyer LLP) — MeshDynamics team.
• Jennifer Parker Ainsworth (Wilson, Robertson & Vandeventer, P.C., 909 ESE Loop 323, Suite 400, Tyler, TX) — local counsel for MeshDynamics in EDTX; signed the Dec. 18, 2025 stipulation on behalf of the plaintiff.

Sources: PACER Monitor party/counsel listing for 2:25‑cv‑00783; EDTX docket entries (e.g., Dkt. 10–12, pro hac vice notices Aug. 14, 2025; Dkt. 13 summons returned, signed by Bernard; Dkt. 14 stipulation of dismissal signed by Ainsworth); the "Stipulation of Dismissal With Prejudice as to U.S. Patent No. 11,368,537" (Dec. 18, 2025), whose signature blocks show Desmarais LLP for Cisco and Daignault Iyer + Wilson Robertson & Vandeventer for MeshDynamics.

(Cisco's own defense team in EDTX — relevant only as context — is Desmarais LLP (Michael R. Rhodes, Emily Weber, Tamir Packin, Lindsey E. Miller, Ryan G. Thorne, Amy I. Wann, Ha Huynh) with local counsel Melissa R. Smith, Gillam & Smith, LLP, Marshall, TX.)

Northern District of California — Cisco Systems, Inc. v. Dynamic Mesh Networks, Inc. et al., No. 3:25‑cv‑06441‑LJC (DJ action naming Dynamic Mesh, Francis daCosta, Sriram Dayanandan, Mesh Dynamics, Inc. as defendants):

• Elizabeth Bernard — Notice of Appearance filed for Dynamic Mesh Networks on Aug. 11, 2025 (Dkt. entry).
• Peter Edward Perkowski (Cal. Bar No. 199491) — Perkowski Legal, PC, 515 S. Flower St., Suite 1800, Los Angeles, CA — Notice of Appearance filed for Dynamic Mesh Networks on Aug. 11, 2025; filed the bulk of the defense papers in N.D. Cal. through at least Oct. 7, 2025 (including filings enclosing the Declaration of Elizabeth Bernard). Local‑market/regional counsel; California and D.C. bars; prior patent/copyright defense work (e.g., Enttech Media Group v. Okularity, C.D. Cal.).

The N.D. Cal. matter is the origin of the pending Federal Circuit appeal No. 26‑1796, Cisco Systems Inc. v. Dynamic Mesh Networks Inc. (appeal filed May 7, 2026, per CAFC docket aggregators), on which Daignault Iyer attorneys (Samay, Charkow, Bernard, Phillips) appear for Dynamic Mesh.

C. Firm leadership (for reference — not shown as appearances in this matter)

Daignault Iyer LLP's name partners are Ronald M. Daignault and Chandran B. Iyer (Vienna, VA; firm also lists an 8618 Westwood Center Dr. address in earlier filings). They lead the firm's broader patent enforcement practice (e.g., ParkerVision, Inc. v. Realtek Semiconductor Corp., W.D. Tex.; Apple v. DoDots, IPR2023‑00937/-938/-939), but I found no appearance or signature by either in IPR2025‑01569 or in the MeshDynamics v. Cisco pleadings, so I do not list them as counsel of record here.

D. Contradictions with the previously generated sections — flagged

1. "Petitioner Unspecified" is incorrect. The public record shows the petitioner in IPR2025‑01569 is Cisco Systems, Inc. (petition filed Sept. 23, 2025, challenging claims 1–3 of the '385 patent on §103 grounds over Castagnoli, Bohm, and Liu; Cisco identified itself as the sole real party‑in‑interest). Docket Alarm, IPVerse, and the PTAB fax‑filing header ("Cisco Systems, Inc., Petitioner v. Dynamic Mesh Networks, Inc. d/b/a MeshDynamics, Patent Owner, Case IPR2025‑01569, Patent 7,894,385") all confirm this.
2. The "no district court litigation identified" conclusion in earlier sections is contradicted. Dynamic Mesh Networks sued Cisco on the '385 patent (among others) in EDTX No. 2:25‑cv‑00472 (May 5, 2025) and No. 2:25‑cv‑00606 (June 6, 2025), both voluntarily dismissed without prejudice on July 31, 2025; Cisco then filed its N.D. Cal. DJ action (5:25‑cv‑06441, July 31, 2025); MeshDynamics re‑filed in EDTX 2:25‑cv‑00781 and 2:25‑cv‑00783 (Aug. 12, 2025), consolidated under Judge Gilstrap.
3. Outcome timing. Aggregators show IPR2025‑01569 as "Discretionary Denial," terminated Jan. 27, 2026 (institution‑decision date), with a PTAB paper mailed Feb. 18, 2026 granting Petitioner's refund of post‑institution fees — consistent with the metadata's "Not Instituted