Nash Innovations v. Mopeka Products: Propane Cylinder Patent Suit Voluntarily Dismissed
Nash Innovations, LLC sued Mopeka Products, LLC in the Western District of Texas asserting US10882664B2 — a patent covering a method and apparatus for covering a portion of a propane cylinder — against Mopeka’s Tank Halo product. The case closed just 67 days after filing when Nash filed a unilateral voluntary dismissal under Rule 41(a)(1)(A)(i).
Early voluntary exit: Nash’s propane sensor suit ends before merits
On August 29, 2025, Nash Innovations, LLC filed a patent infringement action against Mopeka Products, LLC in the Western District of Texas before Judge Alan D. Albright. Nash asserted US10882664B2, which covers a method and apparatus for covering a portion of a propane cylinder, against Mopeka’s commercially available Tank Halo product. Richards Rodriguez & Skeith LLP represented Nash, while Mopeka retained Mackey Law Firm PLLC.
On November 3, 2025 — just 67 days after filing — Nash filed a notice of voluntary dismissal pursuant to Federal Rule of Civil Procedure 41(a)(1)(A)(i). Because Mopeka had not yet served an answer or a motion for summary judgment, the dismissal was self-executing: it required no judicial approval and took immediate effect. Judge Albright’s order acknowledged this, directed the Clerk to close the case, and noted that nothing remained to resolve.
The speed of this resolution — under ten weeks — is notable even by early-dismissal standards and suggests the parties may have reached a private arrangement, or that Nash concluded litigation was not the preferred path, though the public record does not disclose the reason. No merits ruling, claim construction, or fee award was entered, leaving the validity and enforceability of US10882664B2 untested in this proceeding.
Filing to Voluntary dismissal in 67 days
67 days — resolved before any substantive court ruling or scheduling order took effect
Voluntarily dismissed: what the Rule 41 exit means for both parties
Rule 41(a)(1)(A)(i): a self-executing dismissal right
Federal Rule of Civil Procedure 41(a)(1)(A)(i) permits a plaintiff to dismiss without court approval before the defendant has served an answer or a motion for summary judgment. The dismissal is effective upon filing — no judge needs to sign an order. Judge Albright’s closing order confirms this, citing Fifth Circuit precedent (Yesh Music v. Lakewood Church) and noting the case closed automatically.
No judicial action requiredWith or without prejudice? The public record is silent
When a plaintiff invokes Rule 41(a)(1)(A)(i) without specifying terms, the default under federal rules is dismissal without prejudice — meaning Nash could theoretically refile the same claims. However, the filed notice and the court’s closing order do not explicitly state whether dismissal is with or without prejudice. Practitioners should not assume either outcome; the operative document controls and has not been confirmed publicly to specify prejudice terms.
Prejudice terms unconfirmedMopeka exits without a merits ruling — but uncertainty may persist
Mopeka Products obtains closure of this specific action without any finding of infringement, validity, or damages. No injunction was entered and no adverse judgment was recorded. If the dismissal is without prejudice, Mopeka faces residual risk of a refiling — particularly if Nash secured licensing revenue or strategic leverage through the process. Mopeka’s Tank Halo product line carries no judicial cloud from this case.
No adverse finding for MopekaPatent US10882664B2 remains untested and potentially live
Because no court ruled on the merits, US10882664B2 retains its presumption of validity. Competitors and downstream distributors in the propane cylinder accessory and IoT sensing space should note that this patent was asserted aggressively and never invalidated. The rapid close of litigation may signal a licensing resolution, raising the possibility that Nash will pursue other actors in the space using the same patent.
Patent validity unresolvedFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Nash Innovations, LLC | Company | IP holding entity — holder of US10882664B2 covering propane cylinder covering apparatusSearch in Eureka ↗ |
| Defendant | Mopeka Products, LLC | Company | Mopeka Products, LLC — maker of the Tank Halo propane cylinder monitoring accessorySearch in Eureka ↗ |
| Plaintiff counsel | J. Roger Williams , Jr. | Attorney | Counsel for Nash Innovations, LLCSearch in Eureka ↗ |
| Plaintiff counsel | Katharine L. Carmona | Attorney | Counsel for Nash Innovations, LLCSearch in Eureka ↗ |
| Plaintiff law firm | Richards Rodriguez & Skeith LLP | Law Firm | Representing Nash Innovations, LLCSearch in Eureka ↗ |
| Defendant counsel | Michael Cole Mackey. | Attorney | Counsel for Mopeka Products, LLCSearch in Eureka ↗ |
| Defendant law firm | Mackey Law Firm PLLC | Law Firm | Representing Mopeka Products, LLCSearch in Eureka ↗ |
| Presiding judge | Judge Alan D Albright | Judge | Texas Western District CourtSearch in Eureka ↗ |
Official order — verbatim text
The court’s closing order confirms Nash’s dismissal was self-executing under Rule 41(a)(1)(A)(i), requiring no judicial approval. Critically, the order does not adjudicate any claim on the merits — no finding of infringement, validity, or damages was made. The citation to Yesh Music v. Lakewood Church underscores that the dismissal is procedurally complete, but the absence of explicit prejudice language in the public record means the legal posture of US10882664B2 as against Mopeka — and others — remains formally open.
US10882664B2 — Method and Apparatus for Covering a Propane Cylinder Portion
US10882664B2, filed under application number US15/002484, covers a method and apparatus for covering a portion of a propane cylinder — the technology class at the intersection of physical tank accessories and smart sensing. The patent was asserted against Mopeka’s Tank Halo, a device designed to attach to propane cylinders and monitor fuel level. The patent’s designation as a granted utility patent (B2) means it passed examination and carries a presumption of validity that was never challenged in this proceeding.
The propane cylinder accessory and IoT tank monitoring space has seen growing commercial activity as outdoor and RV markets adopt connected devices for fuel management. A patent covering covering apparatus methodology in this category — if broadly construed — could capture a wide range of smart cap, sensor attachment, and tank collar designs. With no claim construction order and no IPR petition on the public record, the enforceability ceiling of US10882664B2 remains unknown, representing real commercial risk for product teams developing in this space.
Should you run an FTO against US10882664B2?
Any company designing, manufacturing, or distributing propane cylinder accessories — particularly smart monitoring caps, tank collars, or sensor attachment systems — should treat US10882664B2 as a live risk. Nash Innovations demonstrated willingness to litigate in one of the most plaintiff-friendly federal venues in the country. Even though this case closed without a merits ruling, the patent was never invalidated, and the dismissal may have been commercially motivated rather than a concession of patent weakness.
PatSnap Eureka’s FTO Search Agent allows product and IP teams to map the claims of US10882664B2 against your specific product architecture, identify prior art that could support an IPR petition, and surface related Nash Innovations filings that may indicate a broader licensing campaign. Running a pre-launch FTO now is significantly less costly than reactive litigation in the Western District of Texas.
Run a freedom-to-operate analysis on US10882664B2 to assess your product’s exposure
Run FTO in Eureka →Similar propane sensor and IoT accessory patent cases in US district courts
Explore related patent infringement actions involving IoT monitoring accessories and physical product-covering apparatus patents filed in Texas federal courts.
What this case signals for the propane sensor and IoT accessory IP landscape
A 67-day voluntary dismissal before any court ruling leaves US10882664B2 fully intact — and Nash’s litigation posture unresolved.
Voluntary dismissal before answer is a common pre-settlement signal
Rule 41(a)(1)(A)(i) is often used after parties reach a private resolution they do not wish to disclose. The absence of any motion practice, scheduling order, or discovery request in this case — combined with the swift exit — is consistent with a licensing discussion that concluded quickly. Companies in adjacent product categories should monitor Nash’s licensing activity.
Judge Albright’s court remains a high-activity venue for patent assertions
Filing in the Western District of Texas before Judge Albright is a deliberate strategic choice. Even short-lived cases in this venue carry settlement leverage given Albright’s historically plaintiff-friendly scheduling and claim construction timelines. The filing itself may have achieved its commercial purpose regardless of outcome.
Nash v Mopeka — key questions answered
Nash Innovations, LLC filed a patent infringement action against Mopeka Products, LLC in the Western District of Texas on August 29, 2025, asserting US10882664B2 against Mopeka’s Tank Halo product. Nash voluntarily dismissed the case on November 3, 2025 — 67 days after filing — under Rule 41(a)(1)(A)(i), before Mopeka filed an answer. The court confirmed the dismissal was self-executing and closed the case.
Mopeka Products exits the case with no finding of infringement, no injunction, and no damages award. Because the dismissal was filed before Mopeka served an answer, it required no judicial approval. However, if the dismissal is without prejudice — the federal default when unspecified — Nash retains the right to refile against Mopeka in the future. The public record does not confirm whether prejudice was specified.
Yes. The voluntary dismissal resolved no substantive issues. No court ruled on the validity, claim scope, or enforceability of US10882664B2. The patent retains its statutory presumption of validity under 35 U.S.C. § 282 and could be asserted again in future proceedings against Mopeka or other defendants.
The Western District of Texas, particularly before Judge Alan D. Albright, has been a preferred venue for patent plaintiffs due to historically fast scheduling, active case management, and plaintiff-friendly outcomes. Filing there typically increases settlement leverage, even in cases that resolve before substantive motion practice. This filing is consistent with a strategic litigation posture rather than a purely merits-driven case.
The Tank Halo is a propane cylinder accessory made by Mopeka Products, LLC. It is designed to attach to or cover a portion of a standard propane cylinder and reportedly provides tank-level monitoring functionality. The product was accused of infringing US10882664B2, which covers a method and apparatus for covering a portion of a propane cylinder. No court made any finding on whether the Tank Halo actually infringes the asserted patent.
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