North Atlantic Imports v. YSN Imports: 5-Patent Griddle Dispute Dismissed With Prejudice
North Atlantic Imports, LLC filed a patent infringement action against YSN Imports, Inc. in the Central District of California, asserting five patents covering propane tabletop griddle grill technology against YSN’s YSNFM-HT-120DB model. The plaintiff voluntarily dismissed the case with prejudice just 132 days after filing — before the defendant had filed an answer.
Five-patent tabletop griddle case closed in under five months
On 29 September 2023, North Atlantic Imports, LLC filed an infringement action against YSN Imports, Inc. in the United States District Court for the Central District of California (Case No. 2:23-cv-08204). The complaint alleged infringement of five US patents — US10959572B2, US11284743B2, US10327588B2, US10952564B2, and US10327589B1 — all relating to propane tabletop griddle and flat-top cast iron grill technology. The accused product was YSN’s 2-Burner Propane Tabletop Griddle Grill Station, Model No. YSNFM-HT-120DB.
On 8 February 2024, just 132 days after filing, North Atlantic Imports filed a notice of voluntary dismissal with prejudice pursuant to Federal Rule of Civil Procedure 41(a)(1)(A)(i). The dismissal was self-executing — available as of right because YSN Imports had not yet filed an answer or moved for summary judgment. A dismissal with prejudice constitutes a final adjudication on the merits, permanently barring North Atlantic Imports from reasserting the same claims against YSN Imports on the same patents.
The speed of resolution — under five months, before any substantive responsive pleading — is consistent with pre-litigation settlement negotiations concluding after filing, a licensing arrangement being reached, or a strategic reassessment of the infringement position. The public record does not disclose the underlying commercial terms, if any. What remains unknown is whether the parties reached a financial or licensing agreement, or whether North Atlantic simply elected not to pursue the litigation further after filing.
Filing to dismissal in 132 days
132 days — resolved faster than the majority of multi-patent infringement cases in C.D. Cal.
What a Rule 41(a)(1)(A)(i) dismissal with prejudice means for both parties
Rule 41(a)(1)(A)(i): voluntary dismissal as of right
Federal Rule of Civil Procedure 41(a)(1)(A)(i) allows a plaintiff to dismiss an action without a court order by filing a notice before the defendant serves an answer or a motion for summary judgment. Here, YSN Imports had done neither, so North Atlantic’s dismissal was self-executing and required no judicial approval. The choice to add ‘with prejudice’ — rather than the default without prejudice — is a deliberate, irrevocable election by the plaintiff.
Plaintiff-initiated, no court order neededWith prejudice: permanent bar on refiling these claims
A dismissal with prejudice operates as a final judgment on the merits under res judicata principles. North Atlantic Imports cannot refile this action, reassert these five patents against YSN Imports on the same accused products, or relitigate the same infringement theories in any US court. This is a stronger finality than a typical voluntary dismissal, which would ordinarily be without prejudice at this early procedural stage. The with-prejudice designation suggests the parties likely reached a resolution they wanted to make permanent.
Permanent bar — no refiling permittedEarly dismissal often signals a confidential resolution
Dismissal with prejudice before the defendant has even answered the complaint is a recognised pattern in patent infringement cases where the parties have reached a private settlement or licensing agreement following the shock of service. The filing itself — asserting five patents — signals North Atlantic took the IP seriously. The rapid, prejudicial close suggests YSN Imports likely provided some form of commercial accommodation, though the public record is silent on any financial terms or ongoing licence.
Likely private resolutionFive asserted patents indicates a broad IP enforcement strategy
Asserting five patents across a single consumer griddle product — spanning applications filed from 2017 to 2021 — suggests North Atlantic Imports has built a deliberate IP portfolio around propane tabletop cooking equipment. This multi-patent approach makes it harder for a defendant to design around any single claim and increases litigation complexity and settlement leverage. Competitors and importers in the outdoor cooking space should treat this portfolio as an active enforcement signal.
Active 5-patent enforcement portfolioFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | North Atlantic Imports, LLC | Company | Propane outdoor cooking equipment IP holder — asserting US10959572B2 and 4 related patentsSearch in Eureka ↗ |
| Defendant | YSN Imports, Inc. | Company | YSN Imports, Inc. — importer and distributor of propane tabletop griddle grill stationsSearch in Eureka ↗ |
| Plaintiff counsel | Jared J. Braithwaite | Attorney | Counsel for North Atlantic Imports, LLCSearch in Eureka ↗ |
| Presiding judge | Judge / | Chief Judge | California Central District Court — Chief JudgeSearch in Eureka ↗ |
Stipulation of dismissal — official text
The dismissal notice invokes Rule 41(a)(1)(A)(i) and explicitly confirms YSN Imports had not answered or moved for summary judgment — making the dismissal self-executing. The critical element is the plaintiff’s affirmative choice to dismiss ‘with prejudice,’ which converts a procedural exit into a permanent adjudication on the merits. This forecloses any future assertion of these five patents against YSN on these accused products, a concession plaintiffs rarely make without receiving something of value in return.
US10959572B2 and four related patents — propane tabletop griddle grill technology
The five asserted patents — US10959572B2, US11284743B2, US10327588B2, US10952564B2, and US10327589B1 — cover design and functional aspects of propane-fuelled tabletop griddle and flat-top cast iron grill stations. The application numbers span from US15/582675 (filed 2017) through US17/214815 (filed 2021), suggesting a continuation or continuation-in-part filing strategy that progressively refined and expanded claim coverage across the product category over four years.
For competitors in the outdoor cooking and tabletop grilling segment, this portfolio represents a material clearance risk. The multi-filing approach is consistent with a strategy designed to create overlapping claim coverage that is difficult to fully design around. Importers, OEM manufacturers, and retailers handling 2-burner propane tabletop griddle SKUs — particularly flat-top or cast iron variants — should treat this portfolio as live enforcement risk, especially given that North Atlantic has now demonstrated willingness to litigate in federal court.
Should your product team run an FTO against these five griddle patents?
Any company manufacturing, importing, or distributing propane tabletop griddle or flat-top cast iron grill products in the US market should conduct a freedom-to-operate review against North Atlantic Imports’ portfolio. The YSNFM-HT-120DB model is a widely available form factor — 2-burner, propane-fuelled, tabletop — which overlaps with a broad range of competing SKUs. A single infringement notice backed by five patents creates substantial commercial disruption, even if ultimately resolved by settlement.
PatSnap Eureka’s FTO Search Agent can map your product’s technical features against the independent and dependent claims across all five application numbers simultaneously, identifying clearance gaps or potential overlap. Continuous claim monitoring across this portfolio will also alert your team if North Atlantic files additional continuations — a common tactic to extend enforcement reach after initial litigation activity. Proactive monitoring costs a fraction of reactive litigation defence.
Run a freedom-to-operate analysis on US10959572B2 to assess your product’s exposure
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What this case signals for the outdoor cooking equipment IP landscape
A five-patent assertion against an imported griddle product — closed in 132 days — reveals a maturing IP enforcement posture in the tabletop cooking space.
Multi-patent griddle portfolios are being actively enforced against importers
North Atlantic Imports’ willingness to assert five patents simultaneously against a single SKU signals a deliberate enforcement-first IP strategy targeting import competition. Companies importing or distributing propane tabletop griddle or flat-top cast iron cooking equipment in the US should treat this case as a credible enforcement signal and conduct FTO analysis before commercialisation.
Pre-answer dismissal with prejudice strongly suggests a negotiated resolution
The combination of a voluntary dismissal with prejudice — filed before YSN answered — and the 132-day timeline is consistent with a confidential settlement or licensing agreement. Parties considering similar products should note that even early-stage patent assertions in this sector appear to produce commercial resolutions, suggesting plaintiff IP holders view enforcement as a commercially viable lever.
North v YSN — key questions answered
North Atlantic Imports, LLC filed a patent infringement action against YSN Imports, Inc. in the Central District of California on 29 September 2023, asserting five US patents against YSN’s propane tabletop griddle grill station (Model YSNFM-HT-120DB). The case was voluntarily dismissed with prejudice by the plaintiff on 8 February 2024, 132 days after filing, before the defendant had filed any answer.
A dismissal with prejudice under Rule 41(a)(1)(A)(i) operates as a final adjudication on the merits. North Atlantic Imports is permanently barred from refiling the same infringement claims against YSN Imports based on the same five patents and accused products. This is an irrevocable concession made voluntarily by the plaintiff — no court order was required because YSN had not yet answered the complaint.
North Atlantic Imports asserted five US patents: US10959572B2 (App. No. US16/448746), US11284743B2 (App. No. US17/214815), US10327588B2 (App. No. US15/582675), US10952564B2 (App. No. US16/448639), and US10327589B1 (App. No. US16/231384). All relate to propane tabletop griddle and flat-top cast iron grill station technology.
Dismissal with prejudice at this early stage — before any answer — is most commonly associated with a negotiated resolution such as a confidential settlement or licensing agreement. The plaintiff may also have reassessed infringement merits or commercial viability. The deliberate election of ‘with prejudice’ (rather than without) suggests the parties wanted finality, which is consistent with a commercial arrangement having been reached.
North Atlantic’s five-patent portfolio, filed between 2017 and 2021, covers propane tabletop griddle and flat-top cast iron grill technology. The continuation-style filing strategy creates overlapping claim coverage that is difficult to fully design around. Importers and distributors of similar 2-burner propane tabletop griddle products face meaningful infringement exposure and should conduct FTO analysis across all five patents before commercialising comparable SKUs in the US market.
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