Campbell v. Tube-Mac Industries: Supreme Court Petition Denied in 68 Days
Steve Campbell petitioned the U.S. Supreme Court against Tube-Mac Industries over US9376049B2, a patent covering the fabrication of Type 4 cylinders for gaseous fluid transport. The Court denied the petition on November 4, 2024 — disposing of the case in just 68 days, consistent with the Court’s standard cert denial practice.
Supreme Court refuses certiorari in Type 4 cylinder patent dispute
Steve Campbell filed a petition for certiorari at the U.S. Supreme Court on August 28, 2024, seeking review of a dispute involving US9376049B2 — a patent directed to methods of fabricating Type 4 composite cylinders and arranging them within transportation housings for the conveyance of gaseous fluids. The respondent, Tube-Mac Industries, Inc., is represented by Buchanan Ingersoll & Rooney PC. The case is designated Case No. 24-236 in the Supreme Court’s docket.
The Court denied the petition on November 4, 2024, closing the case after just 68 days. A denial of certiorari is not a ruling on the merits — it signals only that fewer than four Justices voted to grant review. The basis of termination is recorded as ‘Petition Dismissed,’ which is consistent with a standard cert denial. The decision below, whatever its outcome, therefore stands as the controlling precedent between these parties.
A 68-day resolution is unremarkable at the certiorari stage; the Supreme Court disposes of the vast majority of petitions without extensive briefing or oral argument. The public record does not disclose the substance of the legal questions Campbell sought to present, the nature of the lower-court proceedings, or whether any settlement discussions accompanied the petition. What remains clear is that Tube-Mac Industries retains the benefit of the ruling below, and Campbell’s avenue for further federal judicial review is now closed.
Filing to Petition Dismissed in 68 days
68 days — resolved at cert stage, well within the Court’s typical petition review window
Cert denied: what the Supreme Court’s refusal means for both parties
Denial of certiorari is not a merits decision
When the Supreme Court denies a petition for certiorari, it does not affirm or reverse the lower court on the merits. It means the Court — requiring four votes to grant — declined to exercise discretionary review. The legal and factual findings of the court below remain in force. This is the Court’s most common disposition: it denies the overwhelming majority of the roughly 7,000–8,000 petitions filed each term.
Certiorari deniedCampbell exhausts federal judicial review
With the Supreme Court declining review, Steve Campbell has no remaining federal appellate avenue to challenge the outcome below. The denial forecloses further argument on any question of law Campbell sought to present regarding US9376049B2. Unless a collateral proceeding — such as a USPTO post-grant review or a new district court action — is available and viable, the respondent’s position is now effectively final.
No further appeal availableTube-Mac retains the benefit of the lower ruling
Tube-Mac Industries, Inc. prevails procedurally: the lower court’s decision in its favour stands undisturbed. Represented by Buchanan Ingersoll & Rooney PC, the company successfully defended against certiorari review. The denial strengthens Tube-Mac’s position in any ongoing commercial or licensing disputes relating to the Type 4 cylinder technology covered by US9376049B2, though it creates no binding precedent on the underlying patent questions.
Lower decision standsPatent enforceability for Type 4 cylinder technology remains unresolved nationally
Because certiorari was denied without merits review, no Supreme Court precedent was created on the patent questions in dispute. Competitors and licensees in the compressed gas cylinder and transport housing sector cannot draw doctrinal certainty from this disposition. Companies working with Type 4 composite cylinder fabrication methods should monitor the lower court record for any findings that may inform infringement or validity analysis of US9376049B2.
No national precedent createdFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Steve Campbell | Individual | Petitioner and patent rights claimant — holder of US9376049B2 covering Type 4 cylinder fabricationSearch in Eureka ↗ |
| Defendant | TUBE-MAC INDUSTRIES, Inc. | Company | Tube-Mac Industries, Inc. — respondent, industrial fluid transport system manufacturerSearch in Eureka ↗ |
| Plaintiff counsel | Steven Campbell | Attorney | Counsel for Steve CampbellSearch in Eureka ↗ |
| Defendant counsel | Lynn Jeffery Alstadt | Attorney | Counsel for TUBE-MAC INDUSTRIES, Inc.Search in Eureka ↗ |
| Defendant law firm | Buchanan Ingersoll & Rooney PC | Law Firm | Representing TUBE-MAC INDUSTRIES, Inc.Search in Eureka ↗ |
| Presiding judge | Judge N/A | Judge | U.S. Supreme CourtSearch in Eureka ↗ |
Official order — verbatim text
The one-line disposition — ‘Petition DENIED’ — is the Supreme Court’s standard shorthand for a denial of certiorari. It carries no explanatory reasoning and establishes no precedent. For Campbell, it is a terminal procedural outcome: the Court’s refusal to grant review means the merits of his patent claims under US9376049B2 were never adjudicated at this level. For Tube-Mac, it is a favourable finality — the decision of the court below is now unreviewable through ordinary federal appellate channels. Analysts should treat this as a procedural close, not a substantive resolution of the underlying patent dispute.
US9376049B2 — Type 4 cylinder fabrication and gaseous fluid transport housing method
US9376049B2 (application number US14/239938) protects a method of fabricating Type 4 cylinders — composite-construction pressure vessels with a polymer liner and fibre-reinforced overwrap — and arranging those cylinders within transportation housings for the conveyance of gaseous fluids. Type 4 cylinders are widely used in compressed natural gas (CNG) and hydrogen transport applications due to their lighter weight and higher pressure tolerance compared with metal alternatives. The application date and prosecution history are not detailed in the available public litigation record.
The commercial relevance of US9376049B2 extends across the compressed gas logistics chain: from CNG distribution to emerging hydrogen fuel transport infrastructure. As governments and industries accelerate hydrogen economy investment, patents governing efficient cylinder fabrication and modular transport housing arrangement are strategically important assets. Tube-Mac Industries’ position as respondent — successfully defending through to Supreme Court cert denial — suggests the company views this patent as central to its product and service offering, making freedom-to-operate analysis essential for any competitor in this space.
Should your team run an FTO analysis against US9376049B2?
Any organisation fabricating Type 4 composite cylinders, designing transport housings for gaseous fluids, or supplying compressed gas logistics equipment — particularly for CNG or hydrogen applications — should assess whether their processes and products fall within the claims of US9376049B2. The patent’s method claims potentially reach manufacturing processes, not just end products, which can broaden the infringement footprint. The unresolved lower-court proceedings make the claim scope particularly worth scrutinising.
PatSnap Eureka’s FTO Search Agent allows R&D and legal teams to map their product and process workflows against the independent and dependent claims of US9376049B2, surface prosecution history estoppel, and identify design-around opportunities — all in a fraction of the time of a traditional FTO study. Eureka can also flag related continuations, divisionals, or family members that may present parallel risk.
Run a freedom-to-operate analysis on US9376049B2 to assess your product’s exposure
Run FTO in Eureka →Similar Supreme Court cert petitions in composite cylinder and gas transport IP
Explore related cert-stage patent disputes involving composite pressure vessel technology, Type 4 cylinders, and compressed gas transport methods before the U.S. Supreme Court.
What this case signals for the compressed gas cylinder IP landscape
A cert denial at the Supreme Court closes the door for Campbell but leaves broader patent questions unanswered for the sector.
Cert denial preserves Tube-Mac’s position — but not as binding precedent
Tube-Mac Industries benefits from finality, but the Supreme Court’s refusal to hear the case creates no new law. Other parties in the Type 4 cylinder and compressed gas transport sector cannot rely on this outcome to resolve validity or infringement questions about US9376049B2 in their own disputes. Each case turns on its own record.
Post-grant review remains a viable tool if US9376049B2 validity is contested
A Supreme Court cert denial does not extinguish USPTO post-grant proceedings. Any party with standing that believes US9376049B2 is invalid may still consider inter partes review (IPR) before the Patent Trial and Appeal Board, subject to timing and estoppel constraints. The closed Supreme Court case does not raise a PTAB bar.
Campbell v TUBE-MAC — key questions answered
A cert denial means the Supreme Court declined to review the lower court’s decision — it is not a ruling on the merits. The lower court’s outcome stands as final between the parties, and Campbell has no further ordinary federal appellate avenue. It creates no binding Supreme Court precedent on US9376049B2.
US9376049B2 covers a method of fabricating Type 4 composite pressure cylinders — polymer-lined, fibre-overwrapped vessels used in compressed gas applications — and arranging those cylinders in transportation housings for gaseous fluid conveyance. This technology is relevant to CNG distribution and emerging hydrogen transport infrastructure.
Yes. A Supreme Court cert denial does not bar USPTO post-grant proceedings. Inter partes review (IPR) before the Patent Trial and Appeal Board remains available to eligible parties, subject to the one-year statutory bar from service of a complaint and any estoppel considerations arising from prior district court proceedings.
Tube-Mac Industries was represented by Lynn Jeffery Alstadt of Buchanan Ingersoll & Rooney PC in the Supreme Court proceedings recorded in Case No. 24-236. Steve Campbell represented himself as petitioner, with Steven Campbell listed as plaintiff agent.
The case was filed on August 28, 2024 and closed on November 4, 2024 — a duration of 68 days. This is consistent with standard Supreme Court cert petition timelines, where the Court typically acts on petitions within one to three conference cycles without full briefing or oral argument.
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