Umbra Technologies v. VMware: Four-Patent VPN Suit Dismissed With Prejudice in 49 Days
Umbra Technologies (UK, CN, and US entities) sued VMware in the Northern District of California, asserting four patents covering VPN overlay network and software-defined networking technology against VMware Horizon, NSX, SD-WAN, and vSphere. The case closed with prejudice just 49 days after filing — before any substantive court ruling.
A rapid, prejudicial exit: Umbra drops four-patent VMware suit before any ruling
In March 2024, Umbra Technologies Limited (CN), Umbra Technologies Limited (UK), and Umbra Technologies (US), Inc. jointly filed suit against VMware, Inc. in the U.S. District Court for the Northern District of California (Case No. 3:24-cv-01609), asserting infringement of four US patents — US11146632B2, US11108595B2, US10574482B2, and US10630505B2. The accused products spanned VMware’s core enterprise portfolio: Horizon (virtual desktop infrastructure), NSX (software-defined data center), SD-WAN, and vSphere.
The case terminated on May 3, 2024, just 49 days after filing, when Umbra filed a voluntary notice of dismissal with prejudice pursuant to Federal Rule of Civil Procedure 41(a)(1)(A)(i). This mechanism allows a plaintiff to dismiss unilaterally before the defendant serves an answer or a motion for summary judgment. The with-prejudice designation is legally significant: Umbra is permanently barred from reasserting the same claims against VMware on the same four patents.
A 49-day lifespan — from complaint to dismissal with prejudice — is consistent with a negotiated resolution reached shortly after filing, though the public record does not confirm any settlement agreement or licensing terms. The speed of resolution and the prejudicial nature of the dismissal together suggest the parties likely reached a commercial arrangement, or that Umbra concluded litigation against VMware was not viable on these claims. What drove that decision remains undisclosed.
Filing to Dismissed with Prejudice in 49 days
49 days from filing to closure — well below the multi-year median for patent cases in N.D. Cal.
Dismissed with prejudice: what the Rule 41 exit means for both parties
Rule 41(a)(1)(A)(i) dismissal with prejudice explained
Under FRCP 41(a)(1)(A)(i), a plaintiff may voluntarily dismiss an action without a court order before the defendant serves an answer or summary judgment motion. Filing ‘with prejudice’ converts what is normally a without-prejudice exit into a permanent bar — equivalent in effect to a final judgment on the merits. No court ruling on the patents’ validity or infringement was issued.
No merits adjudicationUmbra permanently relinquishes its infringement claims against VMware
By choosing dismissal with prejudice, Umbra Technologies and its affiliated entities are barred from re-litigating the same infringement claims against VMware on US11146632B2, US11108595B2, US10574482B2, and US10630505B2. The patents themselves remain in force and enforceable against third parties. The public record does not disclose whether Umbra received any commercial consideration in exchange for this dismissal.
Claims extinguished vs. VMwareVMware secures permanent closure — no liability finding required
VMware obtained a with-prejudice dismissal without any finding of infringement, validity, or invalidity. Morrison & Foerster represented VMware, but the case closed before any substantive defensive filing. VMware’s Horizon, NSX, SD-WAN, and vSphere products face no further exposure from Umbra on these four patents. The resolution timeline suggests VMware’s legal position was strong or that a commercial arrangement was reached early.
Full exposure eliminatedRapid closure signals leverage dynamics in enterprise SDN patent assertions
The 49-day lifecycle — complaint to with-prejudice dismissal — is consistent with patterns seen when patent assertion entities file against large, well-resourced defendants who mount an immediate and credible defence. VMware’s deep defensive patent portfolio and Morrison & Foerster’s IP litigation capability likely raised the cost-benefit calculus for Umbra early. Other enterprise networking vendors holding overlapping SDN or VPN technology should monitor Umbra’s remaining assertion activity.
Watch Umbra’s broader campaignFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Umbra Technologies Limited(CN) | Company | VPN/overlay network technology licensor — holder of US11146632B2 and three further SDN patentsSearch in Eureka ↗ |
| Co-Plaintiff | Umbra Technologies (US), Inc. | Company | Search in Eureka ↗ |
| Co-Plaintiff | Umbra Technologies Limited(CN) | Company | Search in Eureka ↗ |
| Defendant | VMware, Inc. | Company | VMware, Inc. — enterprise virtualization and software-defined networking platform providerSearch in Eureka ↗ |
| Plaintiff counsel | Patrick Richard Delaney | Attorney | Counsel for Umbra Technologies Limited(CN)Search in Eureka ↗ |
| Plaintiff counsel | Seth Wesley Wiener | Attorney | Counsel for Umbra Technologies Limited(CN)Search in Eureka ↗ |
| Plaintiff counsel | Timothy Devlin | Attorney | Counsel for Umbra Technologies Limited(CN)Search in Eureka ↗ |
| Plaintiff law firm | Devlin Law Firm LLC | Law Firm | Representing Umbra Technologies Limited(CN)Search in Eureka ↗ |
| Plaintiff law firm | Law Offices of Seth W. Wiener | Law Firm | Representing Umbra Technologies Limited(CN)Search in Eureka ↗ |
| Defendant counsel | Bita Rahebi | Attorney | Counsel for VMware, Inc.Search in Eureka ↗ |
| Defendant counsel | Brian Christopher Nash | Attorney | Counsel for VMware, Inc.Search in Eureka ↗ |
| Defendant counsel | Ian A. Bennett | Attorney | Counsel for VMware, Inc.Search in Eureka ↗ |
| Defendant counsel | Richard S.J. Hung | Attorney | Counsel for VMware, Inc.Search in Eureka ↗ |
| Defendant counsel | W. Stella Mao | Attorney | Counsel for VMware, Inc.Search in Eureka ↗ |
| Defendant law firm | Morrison & Foerster, LLP | Law Firm | Representing VMware, Inc.Search in Eureka ↗ |
| Presiding judge | Judge Rita F. Lin | Judge | California Northern District CourtSearch in Eureka ↗ |
Official order — verbatim text
The dismissal notice invokes FRCP 41(a)(1)(A)(i) and explicitly elects the with-prejudice variant — a choice that carries the same legal weight as a final judgment on the merits. This phrasing forecloses any future action by the Umbra entities against VMware on the four asserted patents. Critically, no court ruling on infringement, validity, or claim construction was issued, so the patents’ enforceability against third parties is entirely unaffected. The absence of any counterclaim or fee motion from VMware is consistent with the early, pre-answer procedural posture.
US11146632B2, US11108595B2, US10574482B2 & US10630505B2 — VPN Overlay Network Technology
The four asserted patents — US11146632B2, US11108595B2, US10574482B2, and US10630505B2 — share a technical lineage in VPN overlay networking and software-defined connectivity. Their application numbers (filed under US16/095908, US17/000997, US15/563261, and US15/546247) suggest a family built over multiple filing generations, with priority dates suggesting development spanning the mid-to-late 2010s. The patents cover system and method claims relating to how virtual private network tunnels, overlay protocols, and software-defined routing are constructed and managed across distributed enterprise networks.
This patent family sits at the intersection of two high-value enterprise technology markets: SD-WAN (software-defined wide-area networking) and cloud-native VPN infrastructure. VMware’s Horizon, NSX, SD-WAN, and vSphere products are each deeply integrated into enterprise connectivity and virtualisation stacks — making them natural targets for a portfolio asserting overlay network IP. For competing vendors in the SASE, SD-WAN, and virtual desktop infrastructure space, the breadth of the claim language across four related patents warrants careful FTO review, particularly given that these patents survive the VMware dismissal unimpaired.
Should your SDN or VPN product team run an FTO against Umbra’s patent family?
Any organisation developing or selling SD-WAN appliances, VPN gateway software, virtual desktop infrastructure, or software-defined data centre networking products should treat this patent family as a live commercial risk. Umbra has demonstrated willingness to assert these patents against major enterprise vendors, and the with-prejudice dismissal against VMware does not signal that the patents are weak — it signals only that VMware’s specific exposure was resolved. Product teams at Cisco, Fortinet, Juniper, Zscaler, and comparable vendors should map their overlay network and tunnelling implementations against the independent claims of all four patents.
PatSnap Eureka’s FTO Search Agent enables IP and R&D teams to systematically map product features against the claim language of US11146632B2, US11108595B2, US10574482B2, and US10630505B2 simultaneously. Eureka’s AI-assisted claim parsing identifies which specific technical elements of your VPN or SDN stack create overlap risk, flags related family members across jurisdictions, and surfaces prior art that could support an IPR or design-around strategy — giving your team a defensible, documented FTO position before Umbra’s next enforcement action.
Run a freedom-to-operate analysis on US11146632B2 to assess your product’s exposure
Run FTO in Eureka →Similar VPN and SD-WAN patent infringement cases in U.S. district courts
Explore comparable patent infringement actions asserting VPN overlay network and SD-WAN technology in the Northern District of California and related federal venues.
What this case signals for the enterprise SDN and VPN patent IP landscape
A four-patent assertion dropped in 49 days reveals both the aggression and the limits of VPN overlay network patent campaigns against hyperscale enterprise software vendors.
With-prejudice exits after <60 days consistently signal post-filing resolution
When a plaintiff dismisses with prejudice this quickly — before any responsive pleading — it typically reflects either a licence agreement, a credible invalidity threat surfaced in early negotiations, or a decision that litigation economics do not justify proceeding. IP teams tracking Umbra should distinguish this outcome from a purely unilateral withdrawal.
Umbra’s four patents remain live and enforceable against other SDN vendors
The dismissal only extinguishes claims against VMware. US11146632B2, US11108595B2, US10574482B2, and US10630505B2 are active and can be asserted against Cisco, Palo Alto Networks, Juniper, and other SD-WAN or VPN overlay vendors whose products may read on the same claim scope. FTO analysis against these patents is warranted for any enterprise networking product team.
Umbra v VMware — key questions answered
The public record does not disclose the reason. Umbra filed a voluntary notice under FRCP 41(a)(1)(A)(i) choosing the with-prejudice variant, which permanently bars re-assertion of the same claims against VMware. This outcome is consistent with a negotiated licence, an early assessment of litigation risk, or a commercial settlement — but no terms have been publicly confirmed.
Umbra asserted four US patents: US11146632B2, US11108595B2, US10574482B2, and US10630505B2. All relate to VPN overlay networking and software-defined connectivity technology. The accused VMware products were Horizon, NSX software-defined data center, SD-WAN, and vSphere.
No. A voluntary dismissal with prejudice under Rule 41(a)(1)(A)(i) carries no finding on patent validity, infringement, or claim construction. The court issued no substantive ruling. All four patents remain in force and fully enforceable against any party other than VMware. Third-party vendors in the SD-WAN and VPN space should not treat this outcome as a validity signal.
The complaint targeted four VMware product lines: VMware Horizon (virtual desktop and app delivery), VMware NSX (software-defined data center networking), VMware SD-WAN (wide-area networking), and VMware vSphere (virtualisation platform). These products collectively represent a major portion of VMware’s enterprise infrastructure revenue.
No. A dismissal with prejudice operates as a final judgment on the merits for claim-preclusion purposes. Umbra and its affiliated entities — Umbra Technologies Limited (CN), Umbra Technologies Limited (UK), and Umbra Technologies (US), Inc. — are permanently barred from asserting the same four patents against VMware for the same accused conduct. Umbra retains the right to enforce these patents against other defendants.
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