Sunoco v. U.S. Venture: Federal Circuit Butane Blending Appeal Dismissed
Sunoco Partners Marketing & Terminals, LP appealed against U.S. Venture, Inc. and U.S. Oil Co., Inc. at the Federal Circuit over five patents covering continuous in-line butane blending at point of distribution. The appeal was dismissed by mutual agreement in 224 days, with each side bearing its own costs.
Five butane-blending patents, one Federal Circuit dismissal
Sunoco Partners Marketing & Terminals, LP filed this appeal at the Court of Appeals for the Federal Circuit on 25 April 2023, asserting infringement of five patents directed to methods and systems for continuous in-line blending of butane and petroleum at the point of distribution: US9606548B2, US7032629B1, US9494948B2, US7631671B2, and US6679302B1. The defendants-appellees were U.S. Venture, Inc. and its affiliate U.S. Oil Co., Inc., represented by Foley & Lardner, LLP.
The recorded basis of termination is 'Case Dismissed.' The docket order states that the parties having agreed, the proceeding was dismissed under Fed. R. App. P. 42(b), with each side bearing its own costs. The specific terms underlying that agreement are not disclosed in the available record.
Resolution in 224 days at the Federal Circuit, before any merits briefing cycle concluded, suggests the parties reached an arrangement that made continued appellate litigation unnecessary. What drove that outcome — whether licensing, commercial settlement, or otherwise — is not reflected in the public record.
See Complete Case & Patent Analysis →Filing to Case Dismissed in 224 days
224 days from filing to dismissal — a relatively short Federal Circuit appeal lifecycle
US9606548B2 and four further patents — continuous in-line butane blending
Any company designing, deploying, or operating continuous in-line butane-blending systems at fuel terminals or point-of-distribution loading racks should assess freedom-to-operate against all five Sunoco patents. The Federal Circuit's dismissal without a merits ruling means no claim has been judicially narrowed or invalidated, leaving the full as-granted scope of each patent in play. This is particularly relevant for terminal operators, fuel distributors, and blending-system OEMs active in North American markets.
Official order — verbatim text
The docket order records a dismissal entered on consent under Fed. R. App. P. 42(b), with costs borne by each party. The Federal Circuit issued no opinion on claim construction, infringement, or validity of any of the five asserted patents. The order is procedural in character; it resolves the appeal without establishing any precedent or record finding that would bind future proceedings involving these patents.
Appeal dismissed: what the Fed. R. App. P. 42(b) order means for both parties
Fed. R. App. P. 42(b) dismissal: no merits ruling
A dismissal under Federal Rule of Appellate Procedure 42(b) terminates an appeal by agreement of the parties before the appellate court reaches the merits. The Federal Circuit issued no ruling on claim construction, validity, or infringement of any of the five asserted patents. The underlying district court record — whatever it contains — is left undisturbed by this order.
Procedural dismissal — no meritsSunoco's five patents remain in force but untested on appeal
Because the Federal Circuit did not rule on the merits, Sunoco's five butane-blending patents — US9606548B2, US7032629B1, US9494948B2, US7631671B2, and US6679302B1 — are neither validated nor invalidated by this proceeding. Sunoco retains the ability to assert them in future proceedings, subject to any constraints in agreements not disclosed in the public record.
Patents intact, enforceability unresolvedU.S. Venture avoids an adverse appellate ruling — for now
U.S. Venture, Inc. and U.S. Oil Co., Inc. secured dismissal of the appeal without any appellate court finding against them on infringement or validity. Each party bearing its own costs signals a clean procedural close. Whether any commercial or operational constraints were agreed between the parties is not disclosed in the available record.
No adverse finding enteredButane-blending IP landscape remains unsettled after dismissal
With no Federal Circuit merits ruling, the scope and enforceability of Sunoco's butane-blending patent portfolio remains an open question for the broader petroleum distribution sector. Companies operating continuous in-line butane blending systems at point of distribution should note that these five patents have not been judicially narrowed or invalidated at the appellate level.
Portfolio risk unresolvedFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Sunoco Partners Marketing & Terminals, LP | Company | /Search in Eureka ↗ |
| Defendant | U.S. Venture, Inc. | Company | /Search in Eureka ↗ |
| Co-Defendant | U.S. Oil Co., Inc. | Company | Search in Eureka ↗ |
| Plaintiff counsel | George C. Lombardi, Esq. | Attorney | Counsel for Sunoco Partners Marketing & Terminals, LPSearch in Eureka ↗ |
| Plaintiff law firm | Winston & Strawn, LLP | Law Firm | Representing Sunoco Partners Marketing & Terminals, LPSearch in Eureka ↗ |
| Defendant counsel | Andrew Gross | Attorney | Counsel for U.S. Venture, Inc.Search in Eureka ↗ |
| Defendant law firm | Foley & Lardner, LLP | Law Firm | Representing U.S. Venture, Inc.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | Court of Appeals for the Federal CircuitSearch in Eureka ↗ |
R&D signals in the butane and petroleum blending technology space
Forward-looking patent and innovation intelligence derived from Sunoco's butane-blending portfolio and the U.S. Venture dispute — relevant for terminal operators, fuel system engineers, and IP teams.
Sunoco's butane-blending filing trajectory post-2015
The latest asserted patent (US9606548B2) carries a 2015 application date, suggesting Sunoco's foundational filing activity in this domain may have plateaued. Monitoring Sunoco Partners' continuation and continuation-in-part activity since 2015 can reveal whether the portfolio is being extended into digital controls, IoT metering, or vapour recovery — adjacent technology vectors with growing commercial relevance.
Portfolio extension watchFiling trends in continuous in-line fuel blending systems
Continuous in-line blending of butane and gasoline at terminal loading racks is an established but competitively active technology space. Patent filing trends around automated flow metering, RVP optimisation, and real-time blending analytics may indicate where next-generation systems are heading — and where white space exists relative to the Sunoco claim footprint.
Sector filing trendsU.S. Venture's patent position in petroleum distribution
U.S. Venture, Inc. and U.S. Oil Co., Inc. operated as defendants across multi-year litigation and an appeal in this dispute. Analysing their own patent filings — if any — in petroleum blending, fuel terminal operations, or distribution logistics can indicate whether they are building defensive IP or relying on design-arounds and third-party licensing to manage portfolio risk.
Defendant IP footprintAdjacent innovation opportunities near the Sunoco claim boundary
The Sunoco patents concentrate on automated in-line blending and metering at terminal points. Adjacent areas — including cloud-connected blending analytics, predictive RVP modelling using environmental data feeds, and mobile or skid-mounted blending units — may represent claim white space not covered by the five asserted patents, offering R&D and filing opportunities for competitors.
White-space opportunitySimilar Federal Circuit patent appeals in petroleum blending and fuel systems
Explore Federal Circuit appeals involving petroleum processing, fuel terminal, and in-line blending patents — cases with comparable claim scope and dismissal patterns.
What this case signals for the butane-blending IP landscape
A five-patent Federal Circuit appeal resolved in under eight months without a merits ruling carries distinct signals for the petroleum blending sector.
Five patents, no appellate merits ruling — monitor Sunoco's enforcement posture
The dismissal leaves all five Sunoco butane-blending patents fully intact and without Federal Circuit commentary on their scope. Any company operating point-of-distribution butane blending systems should treat this portfolio as an active enforcement risk and conduct current FTO analysis against each of the five asserted patents.
Rule 42(b) dismissals at speed suggest commercial resolution — track follow-on activity
A 224-day Federal Circuit appeal ending by party agreement before merits briefing typically suggests the dispute reached a commercial resolution. IP teams should monitor subsequent patent filings, licensing announcements, or new litigation activity by Sunoco to understand the portfolio's next deployment.
Sunoco v U.S. — key questions answered
Sunoco Partners Marketing & Terminals, LP asserted five patents: US9606548B2, US7032629B1, US9494948B2, US7631671B2, and US6679302B1. All five relate to methods and systems for continuous in-line blending of butane and petroleum at the point of distribution.
The recorded basis of termination is 'Case Dismissed.' The docket order states the parties agreed to dismissal under Fed. R. App. P. 42(b), with each side bearing its own costs. The Federal Circuit issued no merits ruling on infringement, validity, or claim construction. The specific terms underlying the parties' agreement are not disclosed in the available record.
No. A dismissal under Fed. R. App. P. 42(b) is procedural; it does not constitute any finding by the Federal Circuit on validity or infringement. All five Sunoco patents — US9606548B2, US7032629B1, US9494948B2, US7631671B2, and US6679302B1 — remain in force as granted, with their claim scope unnarrated by any appellate ruling.
In a Federal Circuit appeal, costs (such as filing fees and reproduction costs) are typically awarded to the prevailing party unless the court orders otherwise. Here, the order directs each party to bear its own costs, meaning neither side recovers appellate costs from the other. This is commonly seen in agreed dismissals and does not reflect any merits finding.
The Federal Circuit's dismissal without a merits ruling means no judicial narrowing of Sunoco's five patents occurred. Companies designing or operating continuous in-line butane-blending systems at fuel terminals should consider conducting FTO analysis against the full claim sets of all five patents, as their enforceability and scope remain intact and untested at the appellate level.
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