Nano Fire LLC v. Halma PLC: Condensed Aerosol Fire Suppression Dispute Dismissed With Prejudice
Nano Fire LLC accused Halma PLC, FirePro Systems, Halma Holdings, and Hochiki America of infringing two condensed aerosol fire suppression patents — US8865014B2 and US9199108B2 — covering FirePro and FirePro ATEX fixed-installation generators. The case closed by stipulated dismissal with prejudice after 886 days in the District of New Jersey.
Aerosol Fire Suppression IP Battle Ends in Agreed Permanent Dismissal
On 30 June 2023, Nano Fire LLC filed a patent infringement action in the U.S. District Court for the District of New Jersey against a four-party defendant group: Halma PLC (the UK-listed safety-technology conglomerate), its U.S. subsidiary Halma Holdings Inc., FirePro Systems Ltd. (the aerosol suppression manufacturer), and Hochiki America Corporation (a fire-detection and suppression distributor). The asserted patents — US8865014B2 and US9199108B2 — cover condensed aerosol fire extinguishing technology applied to fixed installations, including the FirePro and FirePro ATEX product lines.
The case closed on 2 December 2025 via a Stipulation and Order of Dismissal With Prejudice, signed by both parties and entered by the court. A dismissal with prejudice is a final adjudication on the merits: Nano Fire is permanently barred from re-asserting the same infringement claims against these defendants. The stipulated nature of the order strongly suggests the parties negotiated a private resolution — most commonly a license, settlement payment, or covenant not to sue — though the precise commercial terms are not disclosed in the public record.
At 886 days, the case ran longer than many patent matters that settle pre-discovery, suggesting substantive litigation activity — potentially including claim construction briefing or early motion practice — before the parties reached agreement. What drove the resolution remains unknown from the public record: the absence of a judgment or claim construction order means the patents’ scope was never publicly tested. The outcome leaves both patents enforceable and Nano Fire free to pursue other potential infringers, while the defendants secured a permanent bar on these specific claims.
Filing to Case Dismissed in 886 days
886 days — nearly 2.5 years, above median for NJ patent cases before dismissal
Dismissed with prejudice: what the stipulated order means for both parties
Stipulated dismissal with prejudice is a final, court-sanctioned end
A dismissal with prejudice entered on stipulation means both parties jointly asked the court to close the case permanently. Unlike a default judgment, no merits ruling was issued — but the dismissal carries the same preclusive effect: Nano Fire cannot re-file these infringement claims against these defendants. The court’s role was to approve and enter the agreed order, not to adjudicate the dispute.
Res judicata — claims permanently barredNano Fire secures a permanent close — likely on negotiated terms
Agreeing to a with-prejudice dismissal is unusual unless the plaintiff has obtained something of value — typically a license, lump-sum payment, or ongoing royalty. The public record is silent on financial terms. Critically, both patents (US8865014B2 and US9199108B2) remain active and enforceable, leaving Nano Fire free to assert them against third parties not covered by this stipulation.
Patents remain live for third-party assertionHalma and FirePro achieve permanent immunity from these claims
For Halma PLC, FirePro Systems, Halma Holdings, and Hochiki America, the with-prejudice dismissal eliminates the litigation risk from Nano Fire’s specific infringement allegations. Whether they paid to secure this outcome or successfully negotiated a covenant not to sue is undisclosed. The result provides commercial certainty for continued FirePro and FirePro ATEX product sales in the U.S. market.
Full immunity from re-assertion by Nano FireCondensed aerosol suppression IP landscape remains live risk for others
The resolution without a validity or infringement ruling means Nano Fire’s patents have not been tested — and have not been invalidated. Competitors in the condensed aerosol fire suppression segment who were not party to this stipulation remain exposed. Companies distributing or manufacturing similar fixed-installation aerosol generators should treat these patents as active enforcement assets and conduct FTO analysis accordingly.
Ongoing risk for non-party competitorsFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | NANO FIRE LLC | Company | Fire suppression IP licensing entity — holder of US8865014B2 and US9199108B2Search in Eureka ↗ |
| Defendant | HALMA PLC | Company | Halma PLC and subsidiaries — global safety technology group, makers of FirePro aerosol suppression systemsSearch in Eureka ↗ |
| Co-Defendant | FirePro Systems, Ltd. | Company | Search in Eureka ↗ |
| Co-Defendant | Halma Holdings, Inc. | Company | Search in Eureka ↗ |
| Co-Defendant | Hochiki America Corporation | Company | Search in Eureka ↗ |
| Plaintiff counsel | David L. Hecht | Attorney | Counsel for NANO FIRE LLCSearch in Eureka ↗ |
| Plaintiff counsel | MICHAEL JASON COHEN | Attorney | Counsel for NANO FIRE LLCSearch in Eureka ↗ |
| Plaintiff law firm | Hecht Partiners LLP | Law Firm | Representing NANO FIRE LLCSearch in Eureka ↗ |
| Plaintiff law firm | WINNE, BANTA, HETHERINGTON, BASRALIAN & KAHN, PC | Law Firm | Representing NANO FIRE LLCSearch in Eureka ↗ |
| Defendant counsel | Rhonda Payne Harmon | Attorney | Counsel for HALMA PLCSearch in Eureka ↗ |
| Defendant counsel | STEPHEN C. MATTHEWS | Attorney | Counsel for HALMA PLCSearch in Eureka ↗ |
| Defendant law firm | DLA Piper LLP (US) | Law Firm | Representing HALMA PLCSearch in Eureka ↗ |
| Defendant law firm | Womble Bond Dickinson, LLC | Law Firm | Representing HALMA PLCSearch in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | New Jersey District CourtSearch in Eureka ↗ |
Official order — verbatim text
The verdict is a Stipulation and Order of Dismissal With Prejudice — a jointly authored, court-entered instrument rather than a judicial merits ruling. The phrasing confirms both parties consented, which distinguishes this from a unilateral Rule 41(a)(1) dismissal and gives the order stronger preclusive force. No claim construction, infringement finding, or validity determination was issued, meaning the substantive scope of US8865014B2 and US9199108B2 remains untested by this court. Both patents retain full enforceability against the broader market.
US8865014B2 & US9199108B2 — Condensed Aerosol Fire Suppression Technology
US8865014B2 (application no. US13/824142) and US9199108B2 (application no. US14/638740) both protect technology in the condensed aerosol fire suppression domain — a method of fire extinguishing in which a solid pyrotechnic compound is combusted to generate a fine aerosol of potassium-based particles that suppress flames in an enclosed space. This approach is deployed in fixed-installation systems for industrial, marine, and hazardous-atmosphere applications, including the ATEX-certified variant for explosive-environment use. The continuation-style relationship between the two application numbers suggests overlapping claim scope designed to provide layered protection across the core technology.
For the condensed aerosol fire suppression sector, these two patents represent a meaningful IP position in a market where product differentiation is limited and manufacturing know-how is the primary competitive moat. Halma’s global scale — and the inclusion of Hochiki America as a distribution defendant — confirms the patents were seen as commercially relevant across the full value chain. Competitors and new entrants developing aerosol-generator-based suppression systems, particularly those targeting fixed installations or ATEX-certified applications, should treat these patents as active enforcement assets requiring FTO clearance before product launch or market entry.
Should you run an FTO against US8865014B2 and US9199108B2?
If your organisation manufactures, imports, distributes, or integrates condensed aerosol fire suppression generators — particularly fixed-installation or ATEX-rated systems — these two patents are directly relevant to your freedom to operate. The resolution of this case without a validity ruling means neither patent has been weakened by court scrutiny. The inclusion of a distributor as a named defendant signals that Nano Fire is willing to pursue the full supply chain, not just manufacturers.
PatSnap Eureka’s FTO Search Agent lets you map the claim scope of US8865014B2 and US9199108B2 against your specific product architecture — identifying whether your aerosol generator chemistry, activation mechanism, or installation configuration falls within the asserted claims. Eureka also surfaces the broader citation landscape and prosecution history, enabling your team to identify design-around options or prior art arguments before commercialisation, not after a cease-and-desist lands.
Run a freedom-to-operate analysis on US8865014B2 to assess your product’s exposure
Run FTO in Eureka →Similar Condensed Aerosol Fire Suppression Patent Cases in U.S. District Courts
Cases involving condensed aerosol and fixed-installation fire suppression patents in U.S. district courts — including NJ District Court — with comparable infringement theories and multi-defendant enforcement strategies.
What this case signals for the fire suppression IP landscape
A stipulated with-prejudice dismissal after 886 days typically indicates private value was exchanged. The patents survive — and remain a threat.
Both patents remain enforceable — the risk doesn’t end here
US8865014B2 and US9199108B2 were never adjudicated invalid or not-infringed. Nano Fire resolved only against these four defendants. Any company making, selling, or distributing condensed aerosol fixed-installation fire suppression systems in the U.S. should audit their exposure to these patent claims before commercialising competing products.
Duration signals this was not a quick nuisance settlement
886 days is a significant litigation runway. Cases that settle within 90–180 days rarely generate substantive legal work product. This timeline suggests claim construction, discovery, or serious licensing negotiations occurred — meaning the patents were scrutinised and still survived to a negotiated close. That durability matters for competitive risk assessment.
NANO v HALMA — key questions answered
The case was dismissed with prejudice via a joint Stipulation and Order of Dismissal entered on 2 December 2025. No merits ruling was issued. The dismissal permanently bars Nano Fire from re-asserting the same patent infringement claims against Halma PLC, FirePro Systems, Halma Holdings, and Hochiki America Corporation.
Nano Fire asserted US8865014B2 (application no. US13/824142) and US9199108B2 (application no. US14/638740). Both patents cover condensed aerosol fire extinguishing technology for fixed-installation systems. The accused products were the FirePro and FirePro ATEX condensed aerosol fire extinguishing generators.
A dismissal with prejudice is a final, res judicata bar: the plaintiff cannot re-file the same claims against the same defendants. In patent cases, it does not constitute a finding that the patent is valid or invalid, nor that infringement occurred or did not occur. The patents remain enforceable against third parties not covered by the stipulation.
The public record does not specify the precise basis for Hochiki America’s inclusion, but naming a distributor alongside the manufacturer (FirePro Systems) and parent company (Halma PLC) is a recognised enforcement strategy. Under U.S. patent law, distributors can be liable for direct infringement if they sell or offer to sell infringing products, making supply-chain-wide assertions common in patent litigation.
Yes. The dismissal with prejudice extinguishes claims only against the named defendants. Both patents were never adjudicated invalid or non-infringed, so they remain fully enforceable assets. Nano Fire LLC retains the right to assert them against other manufacturers, distributors, or importers of condensed aerosol fire suppression systems not covered by this stipulation.
PatSnap Eureka searches patents and litigation data to answer instantly.