MOSO v. Dasso (Fed. Cir. 24-1135): Bamboo Scrimber Patent Appeal Remanded to Delaware
MOSO North America and Moso International BV appealed against Dasso International and Easoon USA over US8709578B2, a patent covering bamboo scrimber manufacturing. The Federal Circuit remanded the case to the District of Delaware in 417 days without reaching the merits, with each party bearing its own costs.
Federal Circuit remands bamboo scrimber dispute without merits ruling
MOSO North America, Inc. and Moso International BV filed this appeal at the United States Court of Appeals for the Federal Circuit on 13 November 2023, asserting rights under US8709578B2, a patent directed at bamboo scrimber products and their manufacturing method. The defendants, Dasso International, Inc. and Easoon USA, LLC, are competitors in the engineered bamboo flooring and composite materials market. The case originated from infringement claims in the District of Delaware before reaching the Federal Circuit.
The appeal was resolved on 3 January 2025 through a voluntary dismissal motion that the Federal Circuit granted in part, remanding the appeals to the District of Delaware. Critically, the Federal Circuit expressly took no position on whether the district court should grant any other relief the parties had requested — meaning no merits determination was made at the appellate level. Each party was ordered to bear its own costs, suggesting a negotiated procedural resolution rather than a contested appellate defeat for either side.
The 417-day appellate timeline and the voluntary-dismissal-driven remand suggest the parties may have reached a preliminary understanding or strategic realignment that made continued appellate proceedings unnecessary, though the public record does not confirm any settlement. The return to district court means the underlying infringement dispute over bamboo scrimber technology — and the validity of US8709578B2 — likely remains live before the District of Delaware. What drove the remand request, and whether substantive claims will be pursued or withdrawn, remains unknown from the public record.
Filing to Voluntary dismissal in 417 days
417 days from filing to Federal Circuit remand order — relatively swift for appellate resolution
Voluntary remand: what the Federal Circuit’s order means for both parties
Voluntary dismissal triggers remand, not a merits ruling
The parties filed a motion for voluntary dismissal of the appeal. The Federal Circuit granted it to the extent of remanding to the District of Delaware. This is a procedural resolution — the appellate court explicitly stated it took no position on the merits of any other relief requested. Neither party won or lost on the substantive patent infringement or validity questions at this stage.
Procedural remandWith or without prejudice? The public record is silent
The basis of termination is recorded as voluntary dismissal, but the court order does not specify whether the dismissal is with or without prejudice. This distinction matters significantly: a with-prejudice dismissal would bar re-filing of the same appellate claims, while a without-prejudice dismissal would not. Practitioners should treat this as unresolved until confirmed by district court filings or party statements. The remand itself suggests ongoing district court proceedings remain contemplated.
Prejudice status unconfirmedMOSO returns to district court with patent intact
Because no merits ruling was issued, MOSO North America and Moso International BV retain their infringement claims under US8709578B2 before the District of Delaware. The remand preserves their ability to pursue relief at the trial court level. However, the cost-neutral order suggests the appellate phase produced no strategic advantage — and the underlying enforceability of the bamboo scrimber patent remains to be tested.
Claims preservedDasso and Easoon avoid appellate loss — district risk remains
Dasso International and Easoon USA secured a cost-neutral exit from the Federal Circuit without an adverse ruling. No infringement or validity finding was made against them. However, the remand means the district court proceedings are likely to resume or continue, and the defendants will need to defend against the bamboo scrimber patent claims at that level. The absence of a Federal Circuit merits ruling offers no precedential shield going forward.
District exposure continuesFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | MOSO North America, Inc. | Company | Engineered bamboo products company — holder of US8709578B2Search in Eureka ↗ |
| Co-Plaintiff | Moso International, BV | Individual | Search in Eureka ↗ |
| Defendant | Dasso International, Inc. | Company | Dasso International and Easoon USA — bamboo flooring and composite materials distributorsSearch in Eureka ↗ |
| Co-Defendant | Easoon USA, LLC | Company | Search in Eureka ↗ |
| Plaintiff counsel | Timothy Sendek | Attorney | Counsel for MOSO North America, Inc.Search in Eureka ↗ |
| Plaintiff law firm | Akerman LLP | Law Firm | Representing MOSO North America, Inc.Search in Eureka ↗ |
| Defendant counsel | Gerard M. O’Rourke | Attorney | Counsel for Dasso International, Inc.Search in Eureka ↗ |
| Defendant counsel | Sean T. O’Kelly | Attorney | Counsel for Dasso International, Inc.Search in Eureka ↗ |
| Defendant law firm | O’Kelly & O’Rourke LLC | Law Firm | Representing Dasso International, Inc.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Court of Appeals for the Federal CircuitSearch in Eureka ↗ |
Official order — verbatim text
The Federal Circuit’s order is notable for what it does not decide. By granting the voluntary dismissal motion only to the extent of remanding to the District of Delaware, and expressly reserving any view on other requested relief, the court left all substantive questions — infringement, validity, and claim scope of US8709578B2 — entirely open. The cost-neutral directive is consistent with a jointly requested procedural resolution. This type of appellate order does not establish precedent on the underlying patent questions and signals that the merits dispute over bamboo scrimber manufacturing technology is likely to continue at the district court level.
US8709578B2 — Bamboo Scrimber and Manufacturing Method
US8709578B2 protects bamboo scrimber — a high-density engineered bamboo composite produced by impregnating bamboo fibre bundles with resin and pressing them under heat. The patent covers both the resulting product and the manufacturing method, making it a dual-scope asset. Filed under application number US12/934868, it sits within the engineered wood alternatives and sustainable construction materials domain, a sector experiencing significant commercial growth as builders and manufacturers seek timber substitutes.
For MOSO International and its North American affiliate, US8709578B2 represents a core IP asset in a market where bamboo scrimber competes directly with hardwood flooring, decking, and structural panels. A broad or well-defended version of this patent could block or constrain competing manufacturers and distributors — including Dasso International and Easoon USA — from selling materially similar bamboo composite products. With no merits ruling yet issued, the patent’s enforceability and claim scope remain commercially significant open questions for the entire sector.
Should you run an FTO against US8709578B2?
Any manufacturer, distributor, or retailer of bamboo scrimber products, engineered bamboo flooring, bamboo decking, or high-density bamboo composite panels operating in the US market should consider a freedom-to-operate analysis against US8709578B2. The patent covers both the product and the manufacturing method — meaning exposure can arise from the production process as well as the finished article. With the MOSO v. Dasso dispute unresolved on the merits and likely returning to the District of Delaware, the risk profile for this patent is elevated.
PatSnap Eureka’s FTO Search Agent can map US8709578B2’s claims against your product specifications and manufacturing workflow, flag prior art that could support an invalidity argument, and surface related family members or continuation applications that may extend the patent’s reach. For R&D teams developing next-generation bamboo composites, proactive claim mapping now — before a district court construes the claims — is substantially lower cost than reactive litigation defence.
Run a freedom-to-operate analysis on US8709578B2 to assess your product’s exposure
Run FTO in Eureka →Similar bamboo and engineered wood composite patent cases
Federal Circuit and Delaware district court disputes involving engineered bamboo, composite flooring, and sustainable construction material patents most relevant to MOSO v. Dasso.
What this case signals for the engineered bamboo IP landscape
The MOSO v. Dasso remand illustrates how Federal Circuit appeals in niche materials sectors can resolve procedurally, leaving core patent questions open.
Voluntary remand preserves district court battleground for bamboo IP
When a Federal Circuit appeal ends by voluntary dismissal and remand, the underlying patent dispute typically resurfaces at district court level. Companies in the engineered bamboo and composite flooring sector should monitor the District of Delaware docket for renewed MOSO v. Dasso activity — any ruling there on US8709578B2 will carry direct precedential weight for the industry.
Cost-neutral orders signal negotiated procedural exits, not defeats
The Federal Circuit’s each-party-bears-own-costs order is consistent with a mutually agreed procedural resolution rather than a contested appellate outcome. IP teams tracking this litigation should treat the remand as a pause, not a conclusion. Strategic monitoring of district court filings is warranted before drawing conclusions about patent enforceability.
MOSO v Dasso — key questions answered
The Federal Circuit remanded the appeals to the District of Delaware following a voluntary dismissal motion. No merits ruling on infringement or patent validity was issued. Each party was ordered to bear its own costs. The underlying dispute over US8709578B2, a bamboo scrimber patent, is likely to continue at district court level.
US8709578B2 covers bamboo scrimber — a high-density engineered bamboo composite — and its manufacturing method. The patent’s dual scope (product and process) creates broad potential enforcement reach. It is commercially significant in the sustainable flooring and construction materials market, where bamboo scrimber competes with hardwood and other engineered wood alternatives.
A voluntary dismissal at the Federal Circuit that results in a remand to the district court means the appellate court made no merits determination. The case returns to the district court — here the District of Delaware — where substantive proceedings on infringement and validity can resume. The dismissal’s with- or without-prejudice status governs whether the specific appellate claims can be re-raised.
Dasso International, Inc. and Easoon USA, LLC are defendants in this action and are understood to be competitors in the bamboo flooring and engineered composite materials market. They were represented by O’Kelly & O’Rourke LLC at the Federal Circuit. No finding of infringement or invalidity was made against them in this appellate proceeding.
Because no court has ruled on the validity of US8709578B2, the patent remains presumptively valid. Competitors and third parties potentially at risk from this patent may still petition the USPTO’s Patent Trial and Appeal Board for inter partes review, subject to applicable time bars and standing requirements. The absence of a merits ruling in MOSO v. Dasso makes proactive IPR consideration more relevant for the sector.
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