Dynamic Mesh Networks, Inc. et al. v. Cisco Systems, Inc.

Dynamic Mesh Networks, Inc. (d/b/a MeshDynamics) has initiated patent infringement litigation against Cisco Systems, Inc. in the U.S. District Court for the Eastern District of Texas, case number 2:25-cv-00781. Dynamic Mesh Networks, Inc. is a company with "20 year technology expertise in mission critical, time sensitive, wireless mesh networking software and solutions, with substantial Intellectual Property" and engages in "licensing partnerships with OEMs, enterprises, and government agencies" [cite: 26, 29 (from previous search)]. While its NPE status is sometimes listed as "Unknown," its active pursuit of litigation and focus on licensing suggests it operates as a patent assertion entity (PAE) [cite: 2 (from previous search)]. Cisco Systems, Inc. is a multinational technology conglomerate that develops, manufactures, and sells networking hardware, software, telecommunications equipment, and various high-technology services and products, including routers, switches, firewalls, and wireless solutions [cite: 2, 3, 4 (from previous search), 11 (from previous search), 12 (from previous search)]. The lawsuit alleges infringement of U.S. Patent No. 7,894,385.

The asserted patent, U.S. Patent No. 7,894,385, generally describes a method and apparatus for providing a wireless mesh network and network node, specifically detailing a network with node neighborhoods, multi-sectored antennas, and transceiver controllers configured for installation without manual antenna pointing or pre-coordination [cite: 12 (from previous search)]. The complaint in this case indicates that the claimed invention enables mobile mesh nodes to dynamically adjust routing based on real-time sampling and scanning of parent nodes, aiming to avoid packet loss and maintain network performance. While the complaint broadly accuses Cisco's "mesh networking equipment and solutions, including access points, control systems, and wireless controllers" of infringement across multiple patents, specific Cisco product lines or software infringing US7894385 directly within the context of this case have not been publicly detailed beyond these general categories.

This case is currently active in the discovery phases within the Eastern District of Texas, Marshall Division, and is presided over by Judge Rodney Gilstrap [cite: 1 (from previous search), 4 (from previous search), 9 (from previous search)]. The Eastern District of Texas remains a highly favored venue for patent infringement plaintiffs, including NPEs, due to its historically plaintiff-friendly local rules, judges, and juries, and its reputation for efficient case management [cite: 1 (from previous search), 5 (from previous search), 6 (from previous search), 7 (from previous search), 8 (from previous search)]. The case is notable as it is one of several patent infringement actions filed by Dynamic Mesh Networks against Cisco. Furthermore, Cisco Systems, Inc. has filed an Inter Partes Review (IPR2025-01304) against Dynamic Mesh Networks, Inc. d/b/a MeshDynamics, targeting U.S. Patent No. 7,885,243, though there is no explicit public confirmation that US7894385 is also subject to this or another IPR [cite: 3, 8 (from previous search), 11 (from previous search)]. The institution of IPR2025-01304 was denied because the Patent Owner filed a statutory disclaimer for the entire term of the challenged patent [cite: 8 (from previous search)]. This IPR activity highlights a common tactic by defendants in patent litigation to challenge patent validity at the USPTO in parallel with district court proceedings.

This report summarizes the key legal developments and current posture of the patent infringement litigation Dynamic Mesh Networks, Inc. et al. v. Cisco Systems, Inc., Case No. 2:25-cv-00781, in the U.S. District Court for the Eastern District of Texas, concerning U.S. Patent No. 7,894,385, among others.

Key Legal Developments and Outcome

The litigation is in its early stages, following initial pleadings and moving towards discovery and claim construction. Several parallel inter partes review (IPR) proceedings initiated by Cisco Systems against the asserted patents have been terminated without institution.

1. Filing & Initial Pleadings:

• Complaint Filed: On August 12, 2025, Dynamic Mesh Networks, Inc. d/b/a MeshDynamics ("Dynamic Mesh") filed a patent infringement complaint against Cisco Systems, Inc. in the U.S. District Court for the Eastern District of Texas, initiating case 2:25-cv-00781-JRG. This case was designated as the Lead Case. The patents asserted in this lead case include U.S. Patent Nos. 7,420,952; 7,885,243; 7,894,385; 8,520,691; and 11,368,537.
• Consolidated Case: A related case, 2:25-cv-00783-JRG (Member Case), also filed by Dynamic Mesh against Cisco, asserting U.S. Patent Nos. 8,514,852; 9,049,000; and 8,477,762, was subsequently consolidated with 2:25-cv-00781.
• Prior Related Cases: Earlier filings, including C.A. Nos. 2:25-cv-00472-RWS-RSP (dismissed by joint stipulation) and 2:25-cv-00606-RWS-RSP (voluntarily dismissed by Plaintiff), preceded the current consolidated actions.
• Answer and Counterclaims: Cisco Systems, Inc. filed its Answers to Dynamic Mesh's Complaints on September 18, 2025 (Dkt. 29 and Dkt. 30 in 2:25-cv-00781-JRG). Cisco's answer denied infringement and asserted invalidity of the patents, including U.S. Patent No. 7,894,385.

2. Pre-trial Motions of Substance:

• Notice of Readiness for Scheduling Conference: On September 19, 2025, Dynamic Mesh filed a Notice of Readiness for Scheduling Conference, indicating that no motions were pending at that time.
• Related Declaratory Judgment Action Dismissed: Separately, Cisco Systems, Inc. had filed a declaratory judgment action against Dynamic Mesh Networks, Inc. in the U.S. District Court for the Northern District of California (Case No. 5:25-cv-06441) on July 31, 2025. This action, which also involved U.S. Patent No. 7,894,385, was dismissed without prejudice for lack of subject matter jurisdiction on January 29, 2026.

3. Claim Construction (Markman) Outcomes:

• As of the present date, no Markman order has been issued in the consolidated case 2:25-cv-00781. However, in the September 19, 2025, Notice of Readiness, Dynamic Mesh requested that the Court maintain a similar schedule to a previous related case (2:25-cv-00472-RWS-RSP), which had been set for a Markman Hearing on August 14, 2026. This indicates that claim construction is an anticipated future milestone.

4. Discovery Milestones:

• The case is currently active in discovery phases, as noted in the existing case summary. No specific discovery milestones with strategic significance have been publicly detailed beyond the initial pleadings.

5. Trial Events, Verdict, and Post-Trial Motions:

• Given the case's filing date (August 2025) and the requested schedule contemplating a trial in February 2027 (based on a previous related case's schedule), no trial or verdict has occurred to date.

6. Settlement, Dismissal, Judgment, or Appeal:

• The case remains active. There has been no final judgment, settlement, or dismissal of the current consolidated action.

7. Parallel PTAB IPR/PGR Proceedings:

Cisco Systems, Inc. filed several inter partes review (IPR) petitions against Dynamic Mesh Networks' patents.

• IPR2025-01523 (U.S. Patent No. 7,894,385): Cisco filed this IPR petition on September 8, 2025. The petition was "Not Instituted - Procedural".
• IPR2025-01304 (U.S. Patent No. 7,885,243): Filed by Cisco on September 18, 2025, this IPR was also "Not Instituted - Procedural".
• IPR2026-00008: Filed by Cisco on October 10, 2025, this IPR was "Not Instituted - Procedural".
• IPR2025-01569: Filed by Cisco on September 23, 2025, this IPR was "Not Instituted - Procedural".
• IPR2025-01303 (U.S. Patent No. 11,368,537): This IPR was initially granted institution. However, on March 3, 2026, the Director of the USPTO, upon review, denied institution. This decision was based on Dynamic Mesh Networks, Inc.'s filing of a statutory disclaimer for all claims and the entire term of the challenged patent. This procedural action by the patent owner effectively mooted the IPR.

The PTAB IPRs filed by Cisco against Dynamic Mesh's patents have, to date, not resulted in institution, largely due to procedural reasons or the patent owner's strategic disclaimer of the challenged patent claims, thus removing those patents from further PTAB review.

Here is the identified counsel of record representing Dynamic Mesh Networks, Inc. in Dynamic Mesh Networks, Inc. et al. v. Cisco Systems, Inc., Case No. 2:25-cv-00781 in the U.S. District Court for the Eastern District of Texas:

• Jennifer Parker Ainsworth

  • Role: Attorney for Plaintiff (likely local counsel, given her firm's location in Tyler, TX).
  • Firm: Wilson Robertson & Vandeventer, P.C.
  • Office Location: Tyler, TX.
  • Relevant Experience: Jennifer Parker Ainsworth is admitted to the Texas State Bar (No. 00784720) and is listed as counsel for the plaintiff in filings for this case in the Eastern District of Texas. Her firm is a Texas-based law firm, often indicating a local counsel role in patent litigation within the Eastern District of Texas.

• Elizabeth Bernard

  • Role: Lead Counsel (in related PTAB IPR, likely lead counsel in district court).
  • Firm: Daignault Iyer LLP
  • Office Location: Vienna, VA.
  • Relevant Experience: Elizabeth Bernard is designated as Lead Counsel for Dynamic Mesh Networks, Inc. in a related IPR proceeding (IPR2025-01523) concerning one of the patents at issue in the district court case. Her firm's email address is also provided for service in the IPR, suggesting a primary role in representing Dynamic Mesh Networks, Inc.

• Erin Hadi

  • Role: Back-up Counsel (in related PTAB IPR, likely involved in district court).
  • Firm: Daignault Iyer LLP
  • Office Location: Vienna, VA.
  • Relevant Experience: Erin Hadi is designated as Back-up Counsel for Dynamic Mesh Networks, Inc. in a related IPR proceeding (IPR2025-01523). Her involvement in the IPR suggests a role in the broader patent litigation strategy for Dynamic Mesh Networks, Inc.

Counsel of Record for Cisco Systems, Inc. in Dynamic Mesh Networks, Inc. et al. v. Cisco Systems, Inc.

Cisco Systems, Inc. is represented by a team of attorneys from Desmarais LLP and Gillam & Smith, LLP, as well as in-house counsel.

Outside Counsel

Desmarais LLP

• Michael R. Rhodes

  • Role: Partner, likely lead counsel.
  • Firm & Office Location: Desmarais LLP, New York (also listed with a San Francisco contact)
  • Experience: Mr. Rhodes represents both defendants and plaintiffs in complex technology disputes, primarily patent litigations. He has experience in all phases of litigation from pre-complaint diligence through trial. He was part of a Desmarais LLP trial team that won a complete non-infringement defense verdict for Cisco in a patent infringement suit, defeating a claim for over $370 million. He has litigated in various District Courts, including the Eastern District of Texas. He was elevated to partner in January 2024.

• Lindsey Elizabeth Brandon Miller

  • Role: Partner
  • Firm & Office Location: Desmarais LLP, New York
  • Experience: Ms. Miller is a trial partner for leading technology and life sciences companies in high-stakes patent disputes. She has played a central role in cases yielding over $1.25 billion in recoveries and defending against claims worth hundreds of millions. Her litigation experience spans various industries and technologies, including consumer electronics, software, integrated devices and services, networking, data storage, and security. She was previously an associate at Jones Day, focusing on patent litigation and IP due diligence.

• Ryan Thorne

  • Role: Associate
  • Firm & Office Location: Desmarais LLP, New York
  • Experience: A registered patent attorney, Mr. Thorne's practice focuses on intellectual property and technology-related litigation, including patent litigation and Patent Trial and Appeal Board (PTAB) proceedings. He has experience arguing at oral hearings before District Courts and the PTAB, drafting pleadings and motions, and performing technical analysis in cases involving telecommunications, semiconductors, and computer software. He was recognized by Managing IP as one of the industry's most active practitioners before the PTAB in 2020.

• Tamir Packin

  • Role: Partner, first-chair trial lawyer.
  • Firm & Office Location: Desmarais LLP, New York
  • Experience: Mr. Packin focuses on complex patent cases and has led teams through all phases of litigation. He successfully defended Cisco Systems in a patent infringement suit brought by Egenera related to virtual networking in August 2022, securing a complete defense verdict of non-infringement in a two-week jury trial in Boston, fending off a claim for $371 million. He also previously secured a win for Cisco in 2019 by invalidating an Egenera patent based on improper inventorship. He was recognized as a "Rising Star" by Law360 in 2020 and an "Intellectual Property Trailblazer" by The National Law Journal in 2023.

• Amy I. Wann

  • Role: Associate
  • Firm & Office Location: Desmarais LLP, New York
  • Experience: Her profile at Desmarais LLP indicates her role as an associate.

• Emily Nicole Weber

  • Role: Associate
  • Firm & Office Location: Desmarais LLP, New York
  • Experience: Her PacerMonitor entry for this case lists her as counsel for Cisco.

• Ha Vu Thu Huynh

  • Role: Attorney
  • Firm & Office Location: Desmarais LLP
  • Experience: Her PacerMonitor entry for this case lists her as counsel for Cisco.

Gillam & Smith, LLP

• Melissa Richards Smith
  • Role: Partner, Local Counsel
  • Firm & Office Location: Gillam & Smith, LLP, Marshall, Texas
  • Experience: Ms. Smith is an experienced trial lawyer who practices in state and federal courts of the Eastern District of Texas. She has tried multiple patent cases to verdict for defendants, resulting in non-infringement and invalidity verdicts. She has served as local counsel for visiting lawyers in over three thousand patent cases and is recognized as a "go-to" lawyer by numerous Fortune 500 companies in intellectual property. She has been named a Texas Superlawyer every year since 2008.

In-House Counsel

• Xiao Chang
  • Role: Senior Corporate Counsel, IP Litigation
  • Firm & Office Location: Cisco Systems, Inc., likely at one of their US locations (though the role can be performed from any location within the US)
  • Experience: Ms. Chang manages part of Cisco's patent litigation docket, primarily defending against lawsuits by Non-Practicing Entities (NPEs). Before joining Cisco, she practiced patent litigation at Desmarais LLP and Kirkland & Ellis LLP. Cisco's in-house IP Litigation team is responsible for global patent litigation matters and works closely with product, engineering, and other business teams.