Dynamic Mesh Networks, Inc. et al. v. Unspecified Defendant

This patent infringement litigation was initially filed by Cisco Systems Inc. as the plaintiff against Dynamic Mesh Networks, Inc. et al. (doing business as MeshDynamics) as the defendant. Cisco Systems, Inc. is a prominent operating company known for its networking hardware, software, and telecommunications equipment. Dynamic Mesh Networks, Inc. (MeshDynamics) describes itself as a company specializing in high-performance wireless networking for IoT and enterprise applications, with a focus on multi-radio mesh networking and lightweight IoT protocols. They also highlight their expertise in mission-critical, time-sensitive wireless mesh networking software and solutions, holding substantial intellectual property. The company's origins involve developing robust real-time connectivity solutions for semi-autonomous military machines, funded by organizations like SPAWAR and the USAF.

The initial complaint from Cisco Systems, Inc. alleged infringement across five patents related to SD-WAN with Forward Error Correction, VoIP collaboration, and mesh Wi-Fi technology. Specifically, U.S. Patent 7,894,385, "Mesh network architecture," was among those asserted. This patent generally describes the functionality of multiple radio backhaul extended to mobility applications, using at least one radio for uplink and at least one for downlink, both operating in different, non-interfering channels, and a mobile mesh node scanning multiple channels to determine the best parent mesh node to connect to. Other patents included U.S. Patent 7,885,243 ("Wireless data transmission") and U.S. Patent 7,420,952 ("Network communication"). Cisco accused its own product lines, including Cisco SD-WAN solutions, VoIP collaboration products, and Cisco mesh Wi-Fi equipment (Access Points, wireless controllers, and control systems), of infringing these patents. This suggests the initial filing was a declaratory judgment action, where Cisco, as an operating company, sought a declaration of non-infringement or invalidity against Dynamic Mesh Networks, Inc., a likely patent assertion entity (PAE) given its focus on licensing partnerships and substantial IP.

The case, designated 5:25-cv-06441, was filed on July 31, 2025, in the U.S. District Court for the Northern District of California and was assigned to Chief Judge Noel Wise. The choice of the Northern District of California is notable as it is home to many prominent technology companies, including Cisco Systems, Inc. The case was dismissed without prejudice on January 29, 2026, due to a foundational jurisdictional defect—specifically, a lack of subject matter jurisdiction. This dismissal, granted in just 182 days, highlighted the critical importance of airtight jurisdiction for plaintiffs in patent litigation. Subsequently, Dynamic Mesh Networks, Inc. d/b/a MeshDynamics refiled a similar case, acting as plaintiff, against Cisco Systems, Inc. in the Eastern District of Texas (2:25-cv-00781), asserting some of the same patents, including U.S. Patent 7,894,385. The shift in venue to the Eastern District of Texas is a common strategy for patent assertion entities due to its reputation for being patentee-friendly.

The patent infringement litigation, Cisco Systems Inc. v. Dynamic Mesh Networks, Inc. et al., Case No. 5:25-cv-06441, in the U.S. District Court for the Northern District of California, saw an early dismissal due to jurisdictional issues. This case was filed by Cisco Systems, Inc. against Dynamic Mesh Networks, Inc.

Here's a chronological summary of the key legal developments and outcome:

• 2025-07-31 – Filing of Complaint: Cisco Systems, Inc. filed a patent infringement complaint against Dynamic Mesh Networks, Inc. et al. in the Northern District of California, asserting U.S. Patent No. 7,894,385.
• 2025-08-12 – Related Litigation Filed: Separately, and shortly after the N.D. Cal. filing, Dynamic Mesh Networks, Inc. d/b/a MeshDynamics initiated a declaratory judgment action against Cisco Systems, Inc. in the Eastern District of Texas, Case No. 2:25-cv-00781, with the parties' roles reversed.
• 2025-08-27 – PTAB IPR Petition Filed: Cisco Systems, Inc. filed at least one Inter Partes Review (IPR) petition, IPR2025-01304, against Dynamic Mesh Networks, Inc. at the Patent Trial and Appeal Board (PTAB).
• Motion to Dismiss for Lack of Jurisdiction/Standing: Cisco's case in the Northern District of California faced a challenge regarding jurisdiction or standing. The court found a "foundational jurisdictional defect," likely related to standing or patent ownership/licensing rights, leading to a motion to dismiss.
• 2026-01-29 – Case Dismissed: The U.S. District Court for the Northern District of California dismissed the case without prejudice, ruling on a foundational jurisdictional defect. The dismissal occurred just 182 days after filing. This early dismissal precluded the case from advancing to claim construction, extensive discovery, or trial events.
• 2026-03-03 – PTAB Denies Institution of Related IPR: In a separate IPR proceeding (IPR2025-01523), which listed the N.D. Cal. case (5:25-cv-06441) and the E.D. Tex. case (2:25-cv-00781) as related matters, the PTAB Director denied institution. This IPR concerned U.S. Patent No. 7,420,952 (a different patent from the 7,894,385 patent listed in the prompt for the N.D. Cal. case). The denial was issued because Dynamic Mesh Networks, Inc. had filed a statutory disclaimer for the entire term of the challenged patent before the institution decision, effectively canceling the claims.

The ultimate outcome for the Northern District of California litigation (5:25-cv-06441) was dismissal without prejudice due to issues of standing or jurisdiction. Dynamic Mesh Networks' subsequent refiling of a similar case (2:25-cv-00781) in the Eastern District of Texas, albeit with the parties reversed, indicates the continuation of the dispute in a different forum.

Based on available information from related proceedings, the counsel of record representing Dynamic Mesh Networks, Inc. (the plaintiff) in the dismissed Northern District of California case (5:25-cv-06441) are primarily from Daignault Iyer LLP. While a direct docket entry for counsel appearance in the NDCA case was not explicitly found, filings in a related Patent Trial and Appeal Board (PTAB) Inter Partes Review (IPR2025-01523) and the subsequent Eastern District of Texas case (2:25-cv-00781) consistently identify the following attorneys for Dynamic Mesh Networks, Inc.:

• Elizabeth Bernard

  • Role: Partner, Lead Counsel (identified as Lead Counsel in related IPR and EDTX case)
  • Firm: Daignault Iyer LLP, Vienna, VA and Washington, DC
  • Experience Note: Bernard is a patent litigation partner with Daignault Iyer LLP. Her California State Bar records indicate an active license.

• Erin Hadi

  • Role: Associate, Back-up Counsel (identified as Back-up Counsel in related IPR and EDTX case)
  • Firm: Daignault Iyer LLP, Vienna, VA
  • Experience Note: Hadi is a patent litigation associate focusing on district court and PTAB proceedings, with experience in electronic, network technologies, and life sciences. She previously served as a judicial clerk for the Patent Trial and Appeal Board.

Other attorneys from Daignault Iyer LLP also listed in the related Eastern District of Texas case (2:25-cv-00781) for Dynamic Mesh Networks, Inc. include:

• Lisa N. Phillips

  • Role: Counsel
  • Firm: Daignault Iyer LLP, Vienna, VA
  • Experience Note: Phillips has nearly 25 years of litigation experience in district courts, appeals to the Federal Circuit, and before the PTAB and ITC, covering various technologies including computer software, mechanical, pharmaceutical, and biotechnology.

• Jason S. Charkow

  • Role: Partner
  • Firm: Daignault Iyer LLP, Vienna, VA
  • Experience Note: Charkow is listed as a partner at Daignault Iyer.

• Taylor G. Lepore

  • Role: Associate
  • Firm: Daignault Iyer LLP, Vienna, VA
  • Experience Note: Lepore is listed as an associate at Daignault Iyer.

• Louay Meroueh

  • Role: Associate
  • Firm: Daignault Iyer LLP, Vienna, VA
  • Experience Note: Meroueh is listed as an associate at Daignault Iyer.

• Scott R. Samay

  • Role: Partner
    Firm: Daignault Iyer LLP, Vienna, VA
  • Experience Note: Samay is listed as a partner at Daignault Iyer.

• Donald Lee Jackson

  • Role: Partner
  • Firm: Daignault Iyer LLP, Vienna, VA
  • Experience Note: Jackson is listed as a partner at Daignault Iyer.

Daignault Iyer LLP is an intellectual property litigation boutique that handles patent litigation in district courts, the ITC, and PTAB proceedings, often working on contingency fee arrangements. They represent patent owners in monetization efforts and have experience in a wide range of technologies.

Given that the Northern District of California case was dismissed due to standing issues (before substantial litigation on the merits), detailed individual appearances might not be as extensive as in ongoing cases. However, the consistent appearance of Daignault Iyer LLP attorneys for Dynamic Mesh Networks, Inc. across related federal court and PTAB matters strongly indicates their representation in this case as well.

In the patent infringement case Cisco Systems, Inc. v. Dynamic Mesh Networks, Inc. et al., Case No. 5:25-cv-06441, filed in the U.S. District Court for the Northern District of California, the defendant, Dynamic Mesh Networks, Inc., was represented by the following counsel from DAIGNAULT IYER LLP:

• Elizabeth Bernard

  • Role: Lead Counsel
  • Firm: DAIGNAULT IYER LLP, Vienna, VA office (8229 Boone Boulevard, Suite 450, Vienna, VA 22182)
  • Note: Elizabeth Bernard (USPTO Reg. No. 51,465) is identified as lead counsel for Dynamic Mesh Networks, Inc. in related proceedings, including the N.D. Cal. case and a subsequent E.D. Tex. refiling.

• Erin Hadi

  • Role: Back-up Counsel
  • Firm: DAIGNAULT IYER LLP, Vienna, VA office (8229 Boone Boulevard, Suite 450, Vienna, VA 22182)
  • Note: Erin Hadi (USPTO Reg. No. 79,904) is identified as back-up counsel for Dynamic Mesh Networks, Inc. in related proceedings.

Dynamic Mesh Networks, Inc. successfully moved to dismiss the case for lack of subject matter jurisdiction, leading to its dismissal without prejudice on January 29, 2026.