Nano Fire v. Fireaway: Aerosol Fire Suppression Patents Dismissed With Prejudice
Nano Fire, LLC brought a three-patent infringement action against Fireaway, Inc. in the District of Minnesota, asserting patents covering aerosol fire suppression and high-temperature sublimation fire extinguishing compositions. The Minnesota District Court dismissed the complaint with prejudice after 450 days, with each party bearing its own costs and attorneys’ fees.
Three-Patent Aerosol Fire Suppression Suit Ends in Permanent Dismissal
On February 22, 2023, Nano Fire, LLC filed a patent infringement complaint against Fireaway, Inc. in the U.S. District Court for the District of Minnesota. The action asserted three U.S. patents — US8865014B2, US9248328B2, and US9199108B2 — covering explosion-venting methods for aerosol fire suppression apparatus and fire extinguishing compositions that generate suppression substances through high-temperature sublimation and decomposition processes. Fireaway, Inc. is a commercial supplier in the aerosol fire suppression market, making it a direct potential competitor to Nano Fire’s patented technology.
The case closed on May 17, 2024, when the court dismissed the complaint with prejudice. The order specified that each party shall bear their own costs and attorneys’ fees, indicating no prevailing-party fee award was granted. A dismissal with prejudice constitutes a final adjudication on the merits as a matter of law, permanently extinguishing Nano Fire’s ability to re-assert these three patents against Fireaway based on the same claims in federal court.
The 450-day duration before dismissal with prejudice suggests the parties engaged in substantive pretrial activity before resolution — potentially including motions practice or settlement-adjacent negotiations — though the public docket does not reveal the precise trigger for dismissal. The mutual cost-bearing arrangement is consistent with either a negotiated resolution or a court-ordered dismissal following procedural failure. What drove the with-prejudice disposition, and whether any commercial licensing terms were privately agreed, remains unknown from the public record.
Filing to Dismissed with Prejudice in 450 days
450 days from filing to dismissal — longer than the median patent case resolution at district court level
Dismissed with prejudice: what the court’s order means for both parties
Dismissal with prejudice bars all future re-filing
A dismissal with prejudice is treated as a final judgment on the merits under federal procedural rules. Unlike a without-prejudice dismissal, Nano Fire cannot re-file the same infringement claims against Fireaway based on these three patents in federal court. The court’s order forecloses the litigation pathway entirely, regardless of whether the dismissal was voluntary or compelled.
Permanent bar on re-filingNano Fire loses its enforcement right against Fireaway
The with-prejudice dismissal extinguishes Nano Fire’s infringement claims against Fireaway for US8865014B2, US9248328B2, and US9199108B2 in this action. Nano Fire retains ownership of the patents and may still assert them against other parties, but the res judicata effect of this dismissal means Fireaway is effectively immunised from these specific claims. No damages or injunctive relief was awarded.
Patents survive; enforcement lost vs. FireawayFireaway exits with no liability and no fee award
Fireaway, Inc. secured a complete exit from the litigation with no infringement finding, no damages exposure, and no injunction. Notably, the court declined to award Fireaway its attorneys’ fees — an outcome that suggests the case was not deemed exceptional under 35 U.S.C. § 285, or that the parties agreed on cost neutrality. Fireaway’s freedom to operate with its aerosol suppression products appears preserved as a practical matter.
No liability, no fee awardAerosol suppression IP enforcement landscape remains uncertain
The with-prejudice dismissal without a merits ruling leaves the validity and scope of Nano Fire’s three aerosol fire suppression patents untested by this court. Competitors other than Fireaway remain exposed to potential assertion. The mutual cost-bearing arrangement and permanent dismissal are consistent with a privately negotiated resolution — possibly including a license or covenant not to sue — though this is not confirmed by public filings.
Patents untested; third parties remain at riskFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Nano Fire, LLC | Company | Aerosol fire suppression IP licensor — holder of US8865014B2, US9248328B2, and US9199108B2Search in Eureka ↗ |
| Defendant | Fireaway, Inc. | Company | Fireaway, Inc. — commercial aerosol fire suppression product manufacturer and supplierSearch in Eureka ↗ |
| Plaintiff counsel | David Hecht | Attorney | Counsel for Nano Fire, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Delphine Winthrop Knight Brown | Attorney | Counsel for Nano Fire, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Edward B Magarian | Attorney | Counsel for Nano Fire, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Shannon L. Bjorklund | Attorney | Counsel for Nano Fire, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Dorsey & Whitney LLP | Law Firm | Representing Nano Fire, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Hecht Partners, LLP | Law Firm | Representing Nano Fire, LLCSearch in Eureka ↗ |
| Defendant counsel | Jack Daniel Harkins | Attorney | Counsel for Fireaway, Inc.Search in Eureka ↗ |
| Defendant counsel | Michael P. Adams | Attorney | Counsel for Fireaway, Inc.Search in Eureka ↗ |
| Defendant counsel | Michael R Carey | Attorney | Counsel for Fireaway, Inc.Search in Eureka ↗ |
| Defendant counsel | Robert Daniel Garza | Attorney | Counsel for Fireaway, Inc.Search in Eureka ↗ |
| Defendant law firm | Dykema Gossett PLLC | Law Firm | Representing Fireaway, Inc.Search in Eureka ↗ |
| Defendant law firm | Rozier Hardt McDonough PLLC | Law Firm | Representing Fireaway, Inc.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Minnesota District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s order dismissing the complaint with prejudice and directing each party to bear its own costs and attorneys’ fees is terse but consequential. The with-prejudice designation operates as a final judgment on the merits, permanently barring re-assertion of these claims against Fireaway. The absence of a fee award under 35 U.S.C. § 285 suggests the case was not deemed exceptional, or that the parties mutually agreed to cost neutrality — consistent with a negotiated resolution rather than a contested ruling on the substance of the infringement allegations.
US8865014B2, US9248328B2 & US9199108B2 — Aerosol Fire Suppression Technology
US8865014B2 (App. No. 13/824142) covers explosion-venting methods for aerosol fire suppression apparatus — a structural and safety-critical innovation for managing pressure dynamics in suppression devices. US9248328B2 (App. No. 14/239376) and US9199108B2 (App. No. 14/638740) address fire extinguishing compositions that generate suppression substances through high-temperature sublimation and decomposition respectively. Together, the portfolio spans both apparatus design and chemical composition, giving Nano Fire layered coverage across the aerosol suppression technology stack.
Aerosol fire suppression is a high-growth segment displacing traditional halon-based systems in data centres, automotive, and industrial enclosures. Patents covering both the delivery mechanism (venting apparatus) and the active composition (sublimation/decomposition chemistry) create substantial barriers to design-around. Any competitor seeking to commercialise aerosol-based suppression products faces exposure across both dimensions of this portfolio, making freedom-to-operate analysis essential prior to product launch or market entry.
Should you run an FTO against US8865014B2, US9248328B2, and US9199108B2?
R&D teams and product managers developing aerosol fire suppression systems — particularly those involving pressure-venting mechanisms or thermally activated suppression compounds — should treat these three Nano Fire patents as active FTO risks. The patents remain presumptively valid following this litigation’s dismissal without a merits ruling. Companies supplying aerosol suppression units to data centre, automotive, or industrial clients should assess claim overlap before commercial scale-up.
PatSnap Eureka’s FTO Search Agent enables rapid claim-by-claim mapping of US8865014B2, US9248328B2, and US9199108B2 against your product specifications and manufacturing processes. The tool surfaces relevant prior art, identifies prosecution history estoppel, and flags continuation applications that may broaden coverage. Given the layered apparatus-plus-composition structure of this portfolio, automated multi-patent FTO is significantly faster and more reliable than manual review.
Run a freedom-to-operate analysis on US8865014B2 to assess your product’s exposure
Run FTO in Eureka →Similar Aerosol Fire Suppression Patent Cases in U.S. District Courts
Cases involving aerosol fire suppression and thermally activated extinguishing composition patents litigated at the U.S. district court level, with comparable multi-patent assertion strategies.
What this case signals for the aerosol fire suppression IP landscape
A three-patent enforcement action ending in permanent dismissal without fees carries distinct signals for IP strategy in the fire suppression sector.
With-prejudice dismissal without a fee award suggests negotiated exit
When a patent case ends with prejudice but no fee award, it typically signals that the parties reached a pragmatic resolution — potentially a license, covenant not to sue, or agreed-upon exit. Competitors and licensees in the aerosol fire suppression space should monitor whether Nano Fire pursues similar actions against other market participants.
Nano Fire’s three patents remain valid and potentially enforceable against others
Because the court issued no validity ruling, US8865014B2, US9248328B2, and US9199108B2 retain their presumption of validity. Any company commercialising aerosol fire suppression apparatus or high-temperature decomposition suppression compositions should consider a freedom-to-operate analysis against these patents before launching or scaling products.
Nano v Fireaway — key questions answered
The dismissal with prejudice in Nano Fire v. Fireaway constitutes a final judgment on the merits, permanently barring Nano Fire from re-filing the same infringement claims against Fireaway based on US8865014B2, US9248328B2, and US9199108B2 in federal court. The patents themselves remain valid and enforceable against other parties.
Nano Fire asserted three U.S. patents: US8865014B2 (explosion-venting method for aerosol fire suppression apparatus), US9248328B2 (fire extinguishing composition via high-temperature sublimation), and US9199108B2 (fire extinguishing composition via high-temperature decomposition). All three relate to aerosol-based fire suppression technology.
The court ordered each party to bear its own costs and attorneys’ fees. Under 35 U.S.C. § 285, fee-shifting requires the case to be deemed ‘exceptional.’ The mutual cost-bearing outcome suggests the court made no such finding, or the parties agreed to this arrangement as part of a negotiated resolution. The public record does not disclose the specific basis.
Yes. The dismissal with prejudice extinguishes claims only against Fireaway and does not affect the validity or enforceability of US8865014B2, US9248328B2, or US9199108B2 against other parties. No invalidity or non-infringement ruling was issued by the court, so the patents retain their presumption of validity.
A 450-day duration before a with-prejudice dismissal in a district court patent case is consistent with substantive pretrial engagement — potentially including claim construction briefing, discovery, or settlement negotiations. The extended timeline suggests the parties did not reach an early exit and that litigation costs were likely incurred before the final resolution.
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