B&D Technologies v. Curtis Industries: Three-Patent Cab & AC Dispute Settles
B&D Technologies, LLC filed suit against Curtis Industries, LLC in the District of Massachusetts asserting three patents covering air conditioning systems and cab designs for open motorized vehicles and mowers. After 572 days of litigation before Judge Margaret R. Guzman, the parties reached a confidential settlement and stipulated to dismissal with prejudice.
Open-vehicle cab IP clash ends in confidential settlement
On 30 June 2023, B&D Technologies, LLC filed a patent infringement action against Curtis Industries, LLC in the U.S. District Court for the District of Massachusetts (Case No. 4:23-cv-11479), assigned to Judge Margaret R. Guzman. B&D asserted three patents: utility patent US10632815B2, covering an air conditioning system for an open motorized vehicle, and two design patents — USD882647S and USD863372S — covering a cab roof and a mower cab, respectively. Curtis Industries, a manufacturer of cab and enclosure systems for outdoor power equipment and compact tractors, was identified as the accused infringer.
The action concluded on 22 January 2025, when the parties — including a third party, Fairdale Farm Tractor & Equipment Co., Inc. — filed a joint stipulation of dismissal with prejudice under Fed. R. Civ. P. 41(a)(1)(A)(ii) and (c), citing a confidential settlement agreement. All claims and counterclaims were dismissed, with each party bearing its own litigation costs, expenses, and fees. The with-prejudice designation bars B&D from re-filing the same claims against Curtis on the same patents.
The 572-day duration suggests the parties engaged in meaningful pre-trial proceedings — potentially including claim construction briefing or discovery — before arriving at resolution. The mutual cost-bearing provision is consistent with a negotiated outcome where neither party extracted a clear litigation win. The involvement of Fairdale Farm Tractor as a co-party to the settlement suggests the accused products were distributed through that channel, broadening the commercial scope of the dispute. The precise financial or licensing terms of the settlement remain confidential and are not discernible from the public record.
Filing to Dismissed with Prejudice in 572 days
572 days — longer than the median patent case in D. Mass., suggesting substantive pre-trial activity before settlement
Dismissed with prejudice: what the settlement stipulation means
Rule 41 dismissal with prejudice bars re-filing
The joint stipulation invokes Fed. R. Civ. P. 41(a)(1)(A)(ii), which allows parties to dismiss an action by filing a signed stipulation. The ‘with prejudice’ designation is critical: it operates as a final adjudication on the merits, permanently extinguishing B&D’s right to bring the same claims against Curtis on these three patents in any future action. Rule 41(c) extends the same preclusive effect to the dismissed counterclaims.
Permanent bar on re-filingB&D secures confidential settlement terms
B&D Technologies agreed to dismiss with prejudice, which typically signals the plaintiff obtained some commercial or financial consideration under the confidential settlement — otherwise a without-prejudice dismissal would preserve future enforcement rights. The public record does not reveal whether B&D secured a licence, royalty, or lump-sum payment. The mutual cost-bearing clause suggests no party was awarded litigation fees, consistent with a negotiated compromise rather than a capitulation.
Confidential settlement considerationCurtis avoids adjudication — validity and infringement unresolved
Curtis Industries and distributor Fairdale Farm Tractor exit the litigation without any court finding on infringement or patent validity. The with-prejudice dismissal protects Curtis from this specific plaintiff re-asserting these patents, but it leaves the three patents in force and enforceable. No invalidity finding was entered, meaning the patents retain their presumption of validity and could be asserted against other market participants.
No invalidity finding enteredUtility and design patents remain live risks for the cab sector
Because the case settled before any claim construction or validity ruling, US10632815B2, USD882647S, and USD863372S remain fully enforceable. Competitors designing air conditioning systems or cab enclosures for open motorized vehicles and mowers should treat these patents as active risk factors. The involvement of a downstream distributor (Fairdale) as a named settlement party also signals B&D’s willingness to pursue the full supply chain.
Patents remain enforceableFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | B & D Technologies, LLC | Company | Outdoor power equipment IP holder — owner of US10632815B2, USD882647S, USD863372SSearch in Eureka ↗ |
| Defendant | Curtis Industries, LLC | Company | Curtis Industries, LLC — manufacturer of cab enclosures and accessories for tractors and mowersSearch in Eureka ↗ |
| Plaintiff counsel | James Hunter Adams | Attorney | Counsel for B & D Technologies, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Kerry L. Timbers | Attorney | Counsel for B & D Technologies, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Sharona H. Sternberg | Attorney | Counsel for B & D Technologies, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Adamsip, LLC | Law Firm | Representing B & D Technologies, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Sunstein LLP | Law Firm | Representing B & D Technologies, LLCSearch in Eureka ↗ |
| Defendant counsel | Alexander M. Pechette | Attorney | Counsel for Curtis Industries, LLCSearch in Eureka ↗ |
| Defendant counsel | Philip K. Chen | Attorney | Counsel for Curtis Industries, LLCSearch in Eureka ↗ |
| Defendant law firm | Fish & Richardson PC (Bos) | Law Firm | Representing Curtis Industries, LLCSearch in Eureka ↗ |
| Presiding judge | Judge Margaret R. Guzman | Judge | Massachusetts District CourtSearch in Eureka ↗ |
Official order — verbatim text
The stipulation’s language — ‘all claims and counterclaims should be dismissed with prejudice’ — is broadly drafted to preclude any residual dispute between the named parties on these patents. The explicit inclusion of Fairdale Farm Tractor as a settling party, despite not being the primary manufacturer-defendant, suggests the settlement addressed downstream distribution exposure. The mutual cost-bearing clause forecloses any ancillary fee motion under 35 U.S.C. § 285, providing a clean exit for both sides without further judicial proceedings.
US10632815B2 — Air conditioning system for open motorized vehicles
US10632815B2 is a utility patent covering an air conditioning system designed for open motorized vehicles — a category that encompasses compact tractors, mowers, and similar outdoor power equipment that lack fully enclosed operator cabs. The application number US16/125009 indicates a relatively recent filing, and the B2 designation confirms the patent issued after a substantive examination with a published application. Design patents USD882647S (application US29/666465) and USD863372S (application US29/666395) protect the ornamental appearance of a cab roof and mower cab, respectively.
The combination of a utility patent on climate control functionality with design patents on cab form factors creates a layered IP position that is difficult for competitors to design around in full. A competitor who avoids the AC system claims may still infringe the design patents if their cab enclosure’s visual appearance is substantially similar to B&D’s protected designs, and vice versa. For manufacturers in the compact tractor and commercial mower accessory segment, this portfolio represents a meaningful barrier to entry in the cab-with-climate-control product category.
Should you run an FTO against US10632815B2, USD882647S, and USD863372S?
Any company designing, manufacturing, or distributing cab enclosures, cab roofs, or integrated air conditioning systems for open motorized vehicles — including compact tractors, zero-turn mowers, and utility vehicles — should conduct a freedom-to-operate analysis against this three-patent portfolio before product launch or market entry. The settlement without invalidity findings means all three patents remain presumptively valid and enforceable. Downstream distributors, as demonstrated by Fairdale’s inclusion in this case, are not insulated from enforcement risk.
PatSnap Eureka’s FTO Search Agent can map the claim scope of US10632815B2 against your product specifications, identify design-around opportunities relative to USD882647S and USD863372S, and surface any post-grant proceedings or continuation applications that may extend the portfolio’s reach. Eureka also monitors for new filings by B&D Technologies so your legal and R&D teams receive early warning of emerging IP risk in the mower cab and open-vehicle climate control space.
Run a freedom-to-operate analysis on US10632815B2 to assess your product’s exposure
Run FTO in Eureka →Similar patent cases: open-vehicle cab and outdoor power equipment IP
Explore related patent infringement actions in the outdoor power equipment and open-vehicle cab enclosure space litigated in federal district courts.
What this case signals for the outdoor power equipment IP landscape
Three patents covering cab climate control and enclosure design generated 572 days of litigation — a signal that this niche carries meaningful IP risk.
Design patents are weaponised alongside utility patents in cab litigation
B&D deployed two design patents (cab roof, mower cab) alongside a utility patent covering AC functionality. This mixed-assertion strategy raises damages exposure and complicates invalidity defences, since design and utility patents require distinct challenge theories. Competitors in the mower and compact tractor cab space should audit both functional and ornamental patent exposure.
Distributor inclusion as a settlement party is a supply-chain enforcement signal
Fairdale Farm Tractor & Equipment Co. — a distributor, not a manufacturer — was named as a co-party to the settlement. This pattern suggests B&D pursued the distribution channel, not just the OEM, increasing settlement leverage. Supply chain participants in the outdoor power equipment sector should review their indemnification clauses with cab system suppliers.
B v Curtis — key questions answered
B&D Technologies asserted three patents: utility patent US10632815B2 (air conditioning system for an open motorized vehicle) and two design patents, USD882647S (cab roof) and USD863372S (mower cab). All three patents were resolved by the confidential settlement and dismissed with prejudice on 22 January 2025.
Dismissal with prejudice under Fed. R. Civ. P. 41(a)(1)(A)(ii) operates as a final adjudication on the merits. B&D Technologies cannot re-file the same patent infringement claims against Curtis Industries or Fairdale Farm Tractor on these three patents. The patents themselves remain valid and enforceable against third parties.
Fairdale Farm Tractor & Equipment Co., Inc. was named as a co-party to the settlement stipulation, suggesting it was a distributor of the accused Curtis cab products. B&D’s inclusion of a downstream distributor in the settlement is consistent with a strategy of securing broad release across the supply chain, a common approach in patent enforcement to prevent circumvention through distribution channels.
Yes. Because the case settled before any court ruling on infringement or patent validity, US10632815B2, USD882647S, and USD863372S remain in force with their full presumption of validity under 35 U.S.C. § 282. Other manufacturers or distributors in the mower cab and open-vehicle AC space remain subject to potential enforcement by B&D Technologies.
The case ran for 572 days from filing (30 June 2023) to closure (22 January 2025). The duration suggests substantive litigation activity before settlement. The mutual cost-bearing provision in the stipulation — with each party covering its own fees — is consistent with a negotiated commercial resolution rather than a one-sided capitulation, though the specific financial terms remain confidential.
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