Belvac v. Crown Packaging: Federal Circuit Reverses on On-Sale Bar, 8 Patents Invalidated
Belvac Production Machinery brought an infringement action against Crown Packaging Technology over eight patents covering container necking apparatus and methods. The Federal Circuit reversed the district court, holding all asserted claims invalid under the § 102(b) on-sale bar — a sweeping outcome affecting a portfolio spanning three decades of container manufacturing IP.
Federal Circuit wipes out Crown’s container necking patent portfolio on on-sale bar
Belvac Production Machinery, Inc. filed this appeal at the Court of Appeals for the Federal Circuit on 30 September 2022, challenging a district court judgment that had found its container necking patents not invalid. The dispute centred on eight patents — US7770425, US4774839A, US7530445, US5611231, US6094961A, US9968982, US10751784, and US9308570 — covering apparatus and methods for necking container ends, front-end winder assemblies, high-speed necking configurations, and related container manufacturing processes. Crown Packaging Technology, Inc. was the defendant below and appellee on appeal.
The Federal Circuit issued its decision on 10 December 2024, reversing the district court and remanding for entry of judgment in Belvac’s favour. The court held that the asserted claims of all eight patents are invalid under 35 U.S.C. § 102(b), the on-sale bar. This provision renders a patent invalid if the claimed invention was on sale in the United States more than one year before the patent application’s effective filing date. The Federal Circuit found the district court’s contrary conclusion unpersuasive across all remaining arguments raised by the parties.
The 802-day duration from filing to decision reflects the complexity of coordinating invalidity arguments across eight patents with application dates ranging from the late 1980s to the mid-2010s. The court’s willingness to invalidate the entire asserted portfolio on a single statutory bar — rather than claim-by-claim obviousness or anticipation — suggests strong pre-critical-date commercial activity that the public record does not fully disclose. What remains unknown is whether Crown will seek en banc review or certiorari, and whether the remand will produce any residual damages or fee disputes.
Filing to Reversed and Remanded in 802 days
802 days from filing to Federal Circuit decision — longer than the median Federal Circuit appeal
Federal Circuit reverses: what the on-sale bar ruling means for both parties
Reversal at the Federal Circuit: no reversible error standard flipped
A Federal Circuit reversal means the appellate panel found that the district court committed a legal error material enough to change the outcome. Here, the court held all asserted claims invalid under § 102(b) — the on-sale bar — meaning the claimed inventions were commercially offered for sale before the statutory grace period. The case is remanded solely for entry of judgment in Belvac’s favour; no retrial on the merits is implied.
Reversed & remanded — § 102(b)Crown loses its entire asserted patent portfolio in one ruling
Crown Packaging Technology, as the patent holder and appellee, sees all eight asserted patents rendered unenforceable against Belvac following this ruling. The Federal Circuit’s invalidity finding under § 102(b) is binding; Crown cannot re-assert these claims in subsequent proceedings against Belvac. Crown’s options are limited to seeking en banc rehearing or petitioning the Supreme Court for certiorari — both high-bar proceedings with low grant rates.
Portfolio invalidated — no further recourse at this levelBelvac secures judgment in its favour — infringement threat eliminated
Belvac Production Machinery prevailed on appeal, with the Federal Circuit directing the district court to enter judgment in its favour. The on-sale bar finding eliminates Crown’s infringement claims arising from these eight patents entirely. Belvac’s commercial freedom to operate in container necking machinery is substantially restored, and any damages exposure from the district court proceedings should be nullified on remand.
Appellant wins — judgment ordered in favourOn-sale bar ruling raises the stakes for legacy manufacturing IP
This decision signals heightened vulnerability for mature industrial machinery patents where commercial activity predates filing by years or decades. Container and packaging equipment manufacturers holding older patents — particularly those with application dates in the 1980s–2000s — should audit their prosecution history for pre-critical-date sales activity. The ruling also suggests Federal Circuit scrutiny of on-sale bar defences is intensifying in capital-equipment sectors.
Legacy patent risk — on-sale bar exposureFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Belvac Production Machinery, Inc. | Company | Container necking machinery manufacturer — appellant asserting § 102(b) on-sale bar invaliditySearch in Eureka ↗ |
| Defendant | Crown Packaging Technology, Inc. | Company | Crown Packaging Technology, Inc. — container manufacturer, appellee, holder of the asserted patentsSearch in Eureka ↗ |
| Plaintiff counsel | Brian Charles Riopelle | Attorney | Counsel for Belvac Production Machinery, Inc.Search in Eureka ↗ |
| Plaintiff law firm | McGuireWoods LLP | Law Firm | Representing Belvac Production Machinery, Inc.Search in Eureka ↗ |
| Defendant counsel | John Frank Murphy | Attorney | Counsel for Crown Packaging Technology, Inc.Search in Eureka ↗ |
| Defendant law firm | Baker & Hostetler, LLP | Law Firm | Representing Crown Packaging Technology, 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 directive — ‘REVERSED AND REMANDED’ with an express holding that all asserted claims are invalid under § 102(b) — leaves no ambiguity: this is a complete appellate victory for Belvac. The court applied de novo review to the legal question of whether the on-sale bar applied, finding the district court’s contrary reasoning unpersuasive across every remaining argument. The remand is limited to entry of judgment; no further fact-finding is contemplated. For Crown, the ruling extinguishes all infringement claims based on the eight asserted patents in this litigation.
US7770425 and 7 further patents — container necking apparatus and methods
The eight asserted patents — spanning application dates from 1988 (US4774839A) through 2016 (US10751784) — collectively protect a suite of apparatus and methods for necking metal container ends, including high-speed necking configurations, front-end winder assemblies, and tooling systems used in high-volume beverage and food can manufacturing. The breadth of this portfolio, covering both process and apparatus claims across multiple continuation chains, reflects decades of incremental development in precision container forming technology.
Container necking technology is foundational to the aluminium can supply chain: virtually every beverage can requires neck-forming operations, making freedom to operate in this space commercially critical for both machinery OEMs and can manufacturers. The Federal Circuit’s § 102(b) invalidation of all eight patents materially weakens Crown’s IP position in this sector, potentially opening the field to competitors who had previously faced licensing demands or design-around pressure based on this portfolio.
Should you run an FTO against US7770425 and the Crown Packaging container necking portfolio?
Any company designing, manufacturing, or deploying container necking machinery — including high-speed necking systems, tooling assemblies, and end-forming apparatus — should review this ruling before assuming full FTO clearance. While the Federal Circuit has invalidated the eight asserted patents on § 102(b) grounds in this dispute, the ruling binds only this litigation. Related patents in Crown’s broader portfolio, or patents held by third parties in the container forming space, may still present exposure.
PatSnap Eureka’s FTO Search Agent can map the full landscape of active container necking patents, identify continuation families linked to the invalidated applications, and flag any overlapping claims that remain in force. For R&D teams developing next-generation necking configurations or winder assemblies, an Eureka-powered FTO analysis provides citation-level clarity on which claims survived and which prior art grounds remain available as invalidity defences.
Run a freedom-to-operate analysis on US7770425 to assess your product’s exposure
Run FTO in Eureka →Similar Federal Circuit cases: on-sale bar and container manufacturing patent disputes
Explore Federal Circuit decisions involving § 102(b) on-sale bar invalidity in industrial manufacturing and container equipment patent litigation.
What this case signals for the container manufacturing IP landscape
Eight patents invalidated in a single § 102(b) ruling reshapes the enforceability calculus for industrial machinery IP portfolios.
On-sale bar is a potent weapon against mature industrial machinery patents
Where patented container necking technology was commercially offered before the critical date, § 102(b) can invalidate entire portfolios. Companies defending infringement claims in capital-equipment sectors should prioritise on-sale bar investigations — commercial records, purchase orders, and trade show activity from the pre-filing period are high-value prior art sources.
Portfolio breadth does not guarantee enforcement — age creates vulnerability
Crown’s eight-patent portfolio, spanning application dates from 1987 to 2016, illustrates how a wide numerical spread of patents can mask a common invalidity thread. IP teams should assess whether foundational technology in a portfolio was commercialised before filing, particularly where early-generation products underpin later continuation claims.
Belvac v Crown — key questions answered
The Federal Circuit reversed the district court and held all asserted claims of Crown Packaging’s eight patents invalid under 35 U.S.C. § 102(b), the on-sale bar. The court remanded the case solely for entry of judgment in Belvac’s favour, finding the parties’ remaining arguments on the on-sale bar unpersuasive.
Crown Packaging asserted eight patents: US7770425, US4774839A, US7530445, US5611231, US6094961A, US9968982, US10751784, and US9308570. These patents collectively cover apparatus and methods for necking container ends, high-speed necking configurations, front-end winder assemblies, and related container manufacturing processes.
The on-sale bar under pre-AIA 35 U.S.C. § 102(b) invalidates a patent if the claimed invention was on sale in the United States more than one year before the patent’s effective filing date. The Federal Circuit found that Crown’s asserted patents met this condition, rendering all asserted claims invalid. The specific commercial activity triggering the bar is not fully detailed in the public verdict.
The remand in this case is limited in scope. Because the Federal Circuit reversed on a pure question of law — § 102(b) invalidity — the district court is directed to enter judgment in Belvac’s favour without a retrial. This effectively ends the merits of the dispute, though Crown could seek en banc rehearing or certiorari at the Supreme Court.
The ruling invalidates eight patents covering core container necking technology, removing Crown’s ability to enforce this portfolio against Belvac and potentially weakening its licensing position more broadly. For the sector, the decision highlights the on-sale bar as a high-value invalidity defence for mature industrial machinery patents, particularly those with early application dates where pre-filing commercial activity is likely.
PatSnap Eureka searches patents and litigation data to answer instantly.