East Texas Boot Co. v. New Balance Athletics: Patent Suit Voluntarily Dismissed
East Texas Boot Company, LLC asserted US patent 10,426,219 against New Balance Athletics’ FuelCell performance running shoe line in Massachusetts federal court. The plaintiff voluntarily dismissed all claims without prejudice just 81 days after filing, before New Balance filed any responsive pleading.
A swift exit: patent suit against New Balance ends in voluntary dismissal
On December 6, 2024, East Texas Boot Company, LLC filed a patent infringement action against New Balance Athletics, Inc. in the U.S. District Court for the District of Massachusetts (Case No. 1:24-cv-13023), before Judge Myong J. Joun. The asserted patent, US10426219B2 (application no. US14/211873), covers footwear technology, and the complaint targeted several of New Balance’s premium FuelCell running shoes: the FuelCell MD-X v2, FuelCell SuperComp LD-X, FuelCell SuperComp SD-X, and FuelCell SuperComp XC-X.
On February 25, 2025 — just 81 days after filing — the plaintiff filed a notice of voluntary dismissal under Federal Rule of Civil Procedure 41(a)(1)(A)(i), dismissing all claims against New Balance without prejudice. Critically, this procedural mechanism was available precisely because New Balance had not yet filed an answer or a motion for summary judgment, meaning the dismissal required no court order and no consent from the defendant. No costs or fees award is recorded in the public docket.
The 81-day lifespan and pre-answer exit are consistent with early-stage resolution dynamics common in non-practising entity litigation — possibly reflecting pre-suit licensing discussions, a settlement agreement reached privately, or a reassessment of claim scope. Because the dismissal is without prejudice, East Texas Boot Company retains the right to refile the same claims, meaning New Balance’s FuelCell line cannot be considered permanently cleared on this record. The public docket does not disclose whether any financial consideration changed hands.
Filing to Voluntary dismissal in 81 days
81 days — resolved well before the typical 2–3 year district court patent lifecycle
Voluntarily dismissed: what the Rule 41 exit means for both parties
Rule 41(a)(1)(A)(i): a unilateral, no-court-order dismissal
Because New Balance had not filed an answer or summary judgment motion, East Texas Boot Company could file a notice of voluntary dismissal without seeking court approval. The dismissal takes legal effect the moment it is filed. It is a procedural right available once, without judicial scrutiny of the underlying merits or any imposed conditions, making it one of the cleanest exits available in federal patent litigation.
Rule 41(a)(1)(A)(i) — pre-answerWithout prejudice — but the public record is silent on why
A dismissal ‘without prejudice’ preserves the plaintiff’s right to refile the same claims against the same defendant in the future. A dismissal ‘with prejudice’ would extinguish those claims permanently. Here, the notice explicitly states ‘without prejudice.’ The public record does not disclose whether any confidential settlement, licensing agreement, or other consideration underlies the decision — that distinction is commercially significant and cannot be determined from the docket alone.
Refiling right preservedDefendant exits without admitting liability — but uncertainty remains
New Balance avoids a merits adjudication and any finding of infringement. However, because the dismissal is without prejudice, the FuelCell product line is not permanently cleared of this patent. New Balance received no formal covenant not to sue from this procedural exit. Companies in this position typically seek explicit IP clearance through licensing discussions or FTO analysis to guard against a potential refiling.
No infringement finding — not permanently clearedPerformance footwear IP: the threat window stays open
The without-prejudice exit means US10426219B2 remains a live threat against the FuelCell product family and potentially against other manufacturers in the performance running shoe space. Patent assertion entities that voluntarily dismiss pre-answer frequently refile or pivot to licensing demands. Competitors and suppliers operating in the high-performance midsole and footwear construction space should monitor this patent’s assertion history closely.
Patent still active — monitor for refilingFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | East Texas Boot Company, LLC | Company | Patent assertion entity — holder of US10426219B2 covering footwear technologySearch in Eureka ↗ |
| Defendant | New Balance Athletics, Inc. | Company | New Balance Athletics, Inc. — global athletic footwear and apparel manufacturerSearch in Eureka ↗ |
| Plaintiff counsel | Kimberly A. Dougherty | Attorney | Counsel for East Texas Boot Company, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Justice Law Collaborative, LLC | Law Firm | Representing East Texas Boot Company, LLCSearch in Eureka ↗ |
| Presiding judge | Judge Myong J. Joun | Judge | Massachusetts District CourtSearch in Eureka ↗ |
Official order — verbatim text
The dismissal notice invokes Rule 41(a)(1)(A)(i) and states all claims are dismissed ‘without prejudice,’ with the explicit notation that New Balance had filed neither an answer nor a summary judgment motion. This phrasing is legally precise: it confirms the plaintiff’s unilateral right to exit, precludes any res judicata effect, and leaves the underlying infringement question entirely unresolved. Neither validity nor infringement of US10426219B2 was adjudicated. For New Balance, the absence of a merits ruling means no precedential protection against a future action on the same patent.
US10426219B2 — athletic footwear construction technology
US10426219B2 (filed under application number US14/211873) is a granted U.S. patent covering footwear technology, asserted here against New Balance’s FuelCell performance running shoe family. The FuelCell line — including the MD-X v2, SuperComp LD-X, SuperComp SD-X, and SuperComp XC-X — represents New Balance’s top-tier competition and training footwear, incorporating advanced midsole and energy-return constructions. The specific claims of US10426219B2 that allegedly read on these products were not publicly adjudicated in this proceeding.
The assertion of a footwear construction patent against a premium performance line by a named plaintiff with ‘Boot Company’ branding — but no apparent retail footwear presence — is consistent with patent assertion entity activity in the athletic footwear sector, a space that has seen increasing NPE interest as midsole and upper technologies have proliferated. For footwear manufacturers and their suppliers, US10426219B2 represents a patent whose enforceability and claim scope remain untested by any court, elevating its risk profile for the broader industry.
Should you run an FTO search against US10426219B2?
Any manufacturer, brand, or OEM supplier involved in the design or production of high-performance athletic footwear — particularly shoes featuring advanced midsole systems, carbon-fibre plates, or similar energy-return constructions — should treat US10426219B2 as an active risk. The without-prejudice dismissal means the patent was never adjudicated invalid or not infringed. New Balance’s FuelCell competitors and adjacent product lines face the same potential exposure without a formal clearance opinion.
PatSnap Eureka’s FTO Search Agent enables IP and R&D teams to map the independent and dependent claims of US10426219B2 against specific product architectures, identify prior art that could support an IPR petition, and surface any related continuation patents in the same family. Running a proactive FTO now — before a refiling or licensing demand — is substantially less costly than mounting a litigation defence after the fact.
Run a freedom-to-operate analysis on US10426219B2 to assess your product’s exposure
Run FTO in Eureka →Similar footwear patent infringement cases in U.S. federal courts
Cases involving athletic footwear patent assertions in U.S. district courts, including pre-answer dismissals and NPE-initiated infringement actions against major shoe brands.
What this case signals for the athletic footwear IP landscape
A fast, without-prejudice exit in a footwear patent case rarely signals the end of the story — it often marks a pause.
Without-prejudice dismissals preserve plaintiff’s optionality — watch for refiling
East Texas Boot Company retains the full right to refile infringement claims under US10426219B2 against New Balance or any other footwear manufacturer. The 81-day lifecycle and pre-answer exit are consistent with a plaintiff testing litigation leverage or pursuing parallel licensing discussions. IP teams tracking the FuelCell line should monitor for refiling activity or new infringement notices.
New Balance’s FuelCell line lacks formal patent clearance on this record
A voluntary dismissal without prejudice is not equivalent to a court ruling of non-infringement. New Balance received no judicial determination that its FuelCell MD-X v2, SuperComp LD-X, SD-X, or XC-X products are clear of US10426219B2. Retailers, distributors, and supply chain partners for these products face residual IP risk until a definitive clearance — via license, IPR, or court judgment — is secured.
East v New — key questions answered
It means East Texas Boot Company chose to end this action before New Balance filed any responsive pleading, using Rule 41(a)(1)(A)(i). Because the dismissal is without prejudice, no court ruled on whether US10426219B2 is valid or infringed, and the plaintiff retains the right to refile the same claims in the future. New Balance received no formal clearance from this outcome.
The complaint targeted four products from New Balance’s FuelCell performance running line: the FuelCell MD-X v2, FuelCell SuperComp LD-X, FuelCell SuperComp SD-X, and FuelCell SuperComp XC-X. These are among New Balance’s top-tier competition and training footwear featuring advanced midsole constructions.
Yes. A dismissal without prejudice preserves the plaintiff’s right to refile the same claims. Under the ‘two dismissal rule’ (Rule 41(a)(1)(B)), a second voluntary dismissal on the same claims would operate as an adjudication on the merits — but a first without-prejudice dismissal carries no such bar. East Texas Boot Company could file a new action on US10426219B2 against New Balance at any time within the applicable statute of limitations.
East Texas Boot Company, LLC is the plaintiff and named patent holder of US10426219B2, a granted U.S. patent covering footwear technology. The entity does not appear to operate a consumer-facing retail business, which is consistent with a patent assertion entity (NPE) profile. US10426219B2 was filed under application number US14/211873. The specific technical claims and their prosecution history are publicly available via the USPTO.
The public docket does not disclose any settlement agreement, licensing deal, or financial terms. The case was terminated by a voluntary dismissal notice filed by the plaintiff — a mechanism that requires no court order and no disclosure of underlying terms. Whether a confidential agreement was reached between the parties cannot be determined from the public record alone.
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