A.L.M. Holding & Ergon v. Hi-Tech Asphalt & Zydex — Dismissed Without Prejudice After 189 Days
A.L.M. Holding Company and Ergon Asphalt & Emulsions, Inc. brought a patent infringement action against Hi-Tech Asphalt Solutions and two Zydex entities over asphalt additive technology covered by US7815725B2 and US7981466B2. The case closed via joint stipulation after just 189 days, with each party bearing its own costs — leaving the door open for refiling.
Quick joint exit in a warm-mix asphalt additive IP dispute
Filed on 21 July 2023 in the Virginia Eastern District Court, this infringement action pitted A.L.M. Holding Company and Ergon Asphalt & Emulsions, Inc. against Hi-Tech Asphalt Solutions, Inc. and two related Zydex entities — Zydex Inc. and Zydex Industries Private Limited. The plaintiffs asserted two patents, US7815725B2 and US7981466B2, against a range of Zydex-branded asphalt additive products including ZycoTherm SP, ZycoTherm SP2, ZycoTherm-EZ, and Zycosoil.
The case ended on 26 January 2024 through a Joint Stipulation of Dismissal Without Prejudice filed under Federal Rule of Civil Procedure 41(a)(1)(A)(ii). The court acknowledged the voluntary dismissal and directed the Clerk to close the case, with each party paying its own costs and attorneys’ fees. A dismissal without prejudice means the plaintiffs are not barred from reasserting the same patent claims against the same defendants in a future action.
The 189-day duration from filing to closure is notably short for a multi-defendant patent case involving two patents and five parties. This timeline suggests the parties likely reached some form of private resolution — such as a licensing agreement or commercial settlement — before substantive litigation milestones were reached, though the public record is silent on any underlying terms. The without-prejudice framing preserves plaintiffs’ leverage, which may itself be a negotiated condition.
Filing to voluntary dismissal in 189 days
189 days — faster than most multi-defendant patent infringement cases at first instance
Joint stipulation dismissal: what without prejudice means for both parties
FRCP 41(a)(1)(A)(ii): joint stipulation, no court approval needed
Under Federal Rule of Civil Procedure 41(a)(1)(A)(ii), parties may dismiss an action by filing a signed stipulation — without requiring a court order. The court’s role here was purely ministerial: acknowledging the filing and directing the Clerk to close the case. This route is typically chosen when both sides have reached a private understanding and want a clean, efficient exit from litigation.
Bilateral exit mechanismWithout prejudice: refiling remains possible — but public record is silent on terms
A dismissal without prejudice does not bar the plaintiff from refiling the same claims. This is legally and commercially distinct from a dismissal with prejudice, which would extinguish the claims permanently. The stipulation here specifies ‘without prejudice’ — meaning A.L.M. and Ergon retain the option to sue again on these patents. Whether a private settlement, licence, or other arrangement underlies this dismissal is not disclosed in the public record.
Refiling right preservedEach party bears its own costs — no fee-shifting, no admission
The stipulation explicitly allocates costs and attorneys’ fees to each party independently — no side is ordered to pay the other. In patent litigation, fee-shifting under 35 U.S.C. § 285 requires a finding of an ‘exceptional case’. The absence of any fee award here is consistent with a negotiated exit rather than a contested ruling, and neither party made any admission of liability or invalidity by agreeing to this dismissal structure.
No fee-shiftingThree defendants, one joint stipulation — coordinated exit by all parties
The dismissal covered all three defendants — Hi-Tech Asphalt Solutions, Zydex Inc., and Zydex Industries Private Limited — under a single joint stipulation. This coordinated exit suggests the defendants acted collectively, possibly through shared counsel or a unified commercial resolution. With Zydex entities operating across jurisdictions, resolving all defendants simultaneously in one stipulation reduces the plaintiffs’ residual litigation risk across markets.
All defendants dismissed togetherFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | A.L.M. Holding Company | Company | Asphalt technology IP licensor and specialty emulsions producer — holder of US7815725B2 and US7981466B2Search in Eureka ↗ |
| Defendant | Hi-Tech Asphalt Solutions, Inc. | Company | Hi-Tech Asphalt Solutions and affiliated Zydex entities — producers of the ZycoTherm asphalt additive rangeSearch in Eureka ↗ |
| Plaintiff counsel | Jeffer Ali | Attorney | Counsel for A.L.M. Holding CompanySearch in Eureka ↗ |
| Plaintiff counsel | John Charles Wittmer | Attorney | Counsel for A.L.M. Holding CompanySearch in Eureka ↗ |
| Plaintiff counsel | Stephen Reid Howe | Attorney | Counsel for A.L.M. Holding CompanySearch in Eureka ↗ |
| Plaintiff counsel | William Rueger Poynter | Attorney | Counsel for A.L.M. Holding CompanySearch in Eureka ↗ |
| Defendant counsel | Andrew Gish | Attorney | Counsel for Hi-Tech Asphalt Solutions, Inc.Search in Eureka ↗ |
| Defendant counsel | Charles Bennett Molster , III | Attorney | Counsel for Hi-Tech Asphalt Solutions, Inc.Search in Eureka ↗ |
| Defendant counsel | Conor McDonough | Attorney | Counsel for Hi-Tech Asphalt Solutions, Inc.Search in Eureka ↗ |
| Defendant counsel | Raymond Johnson Bilderbeck | Attorney | Counsel for Hi-Tech Asphalt Solutions, Inc.Search in Eureka ↗ |
| Defendant counsel | Ryan K. Iwahashi | Attorney | Counsel for Hi-Tech Asphalt Solutions, Inc.Search in Eureka ↗ |
| Presiding judge | Judge / | Chief Judge | Virginia Eastern District Court — Chief JudgeSearch in Eureka ↗ |
Stipulation of dismissal — official text
The court’s order is purely procedural: it acknowledges the parties’ joint stipulation under FRCP 41(a)(1)(A)(ii) and directs case closure. The phrasing ‘without prejudice and with each party to pay its own costs’ confirms two things — the plaintiffs’ claims survive for potential refiling, and no party obtained a cost award. No merits determination was made. The order carries no precedential weight on the validity or infringement of US7815725B2 or US7981466B2.
US7815725B2 & US7981466B2 — Warm-Mix Asphalt Additive Technology
US7815725B2 (application no. US11/871782) and US7981466B2 (application no. US12/896488) cover technology in the warm-mix asphalt additive space — specifically compositions and methods designed to reduce the temperatures at which asphalt can be mixed and compacted while maintaining or improving adhesion between aggregate and binder. This class of technology has significant commercial relevance in road construction, where energy costs and emissions reduction are competitive priorities.
The assertion of both patents against the ZycoTherm product line — which includes SP, SP2, EZ, and Zycosoil variants — suggests the plaintiffs view their patent estate as covering the core chemistry used in silane-based warm-mix additives broadly. For competitors developing similar adhesion promoters or warm-mix formulations, these patents represent a meaningful claim scope risk. The fact that both patents survived this litigation without challenge to their validity strengthens their enforceability posture for future proceedings.
Should you run an FTO against US7815725B2 and US7981466B2?
Any company formulating, distributing, or incorporating warm-mix asphalt additives — particularly organosilane or amine-based adhesion promoters — should assess exposure under these two patents. Both patents remain in force, their claims were not tested in this litigation, and the patent holders have demonstrated a willingness to litigate against both U.S. distributors and foreign-origin product manufacturers. Road construction materials suppliers entering the North American market face particular risk.
PatSnap Eureka’s FTO Search Agent can map the claim language of US7815725B2 and US7981466B2 against your product formulation or process, flag overlapping prior art, and surface related family members or continuation risk. Ongoing claim monitoring through Eureka alerts you if either patent is amended, assigned, or cited in new litigation — keeping your FTO current as the enforcement landscape evolves.
Run a freedom-to-operate analysis on US7815725B2 to assess your product’s exposure
Run FTO in Eureka →Similar patent cases in asphalt additives and road construction materials
PatSnap Eureka tracks related litigation across truck body equipment, vehicle accessories, and comparable infringement actions in the Georgia district system.
What this case signals for the asphalt additive IP landscape
A rapid joint exit over warm-mix asphalt chemistry patents raises important questions for competitors, licensees, and R&D teams in the road construction materials sector.
Two active asphalt additive patents remain in force and enforceable
US7815725B2 and US7981466B2 were not invalidated, cancelled, or disclaimed in this proceeding. A dismissal without prejudice leaves their claim scope entirely intact. Competitors developing or sourcing warm-mix asphalt additives — particularly organosilane or amine-based adhesion promoters — should treat these patents as live enforcement risk.
Short duration suggests a private commercial resolution rather than a legal win
189 days is insufficient time for claim construction, discovery, or summary judgment in a two-patent case. The joint stipulation format and mutual cost-bearing are consistent with a licensing arrangement or market-access agreement reached behind closed doors. This pattern — file, negotiate privately, exit quietly — is a recognised IP enforcement strategy, especially where the defendant has global reach.
A.L.M. v Hi-Tech — key questions answered
The case was voluntarily dismissed without prejudice on 26 January 2024 via a joint stipulation under FRCP 41(a)(1)(A)(ii). A.L.M. Holding and Ergon Asphalt had sued Hi-Tech Asphalt Solutions and two Zydex entities over asphalt additive patents US7815725B2 and US7981466B2. Each party paid its own costs. No merits ruling was made.
Plaintiffs asserted US7815725B2 and US7981466B2 against the ZycoTherm range of asphalt additives, including ZycoTherm SP, ZycoTherm SP2, ZycoTherm-EZ, and Zycosoil, all associated with Zydex entities. These patents cover warm-mix asphalt additive compositions and methods designed to improve adhesion between aggregate and binder at lower paving temperatures.
No. A dismissal without prejudice carries no determination on patent validity or infringement. The patents US7815725B2 and US7981466B2 remain in force. The plaintiff retains the right to refile the same claims against the same or other defendants. The dismissal reflects a bilateral procedural exit, not a substantive legal outcome on the merits.
The case closed in 189 days — before significant litigation milestones such as claim construction or discovery were typically completed. This timeline, combined with the joint stipulation format and mutual cost-bearing, is consistent with a private commercial resolution such as a licensing deal or market-access agreement. The public record does not disclose any underlying terms.
Federal Rule of Civil Procedure 41(a)(1)(A)(ii) allows parties to dismiss an action by filing a signed stipulation — without court approval. In this case, all parties jointly filed such a stipulation, and the court’s role was ministerial: acknowledging the dismissal and directing case closure. This mechanism is commonly used when parties have reached a private resolution and want an efficient exit from active litigation.
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