Amatech Group v. Infineon Technologies — Federal Circuit Appeal Voluntarily Dismissed
Amatech Group Ltd. appealed a patentability ruling against Infineon Technologies AG at the Federal Circuit over US9633304B2, covering booster antenna configurations for smart card systems. Amatech moved to voluntarily dismiss the appeals after just 132 days, with each side bearing its own costs.
Swift voluntary exit at the Federal Circuit in smart card antenna IP dispute
On 27 September 2023, Amatech Group Ltd. filed appeals at the Court of Appeals for the Federal Circuit (Case No. 23-2430) against Infineon Technologies AG, challenging a patentability determination — specifically an invalidity or cancellation action — relating to US9633304B2, a patent covering booster antenna configurations and methods used in smart card technology. Amatech was represented by Christopher V. Carani of McAndrews, Held & Malloy, Ltd., while Infineon retained Richard Giunta of Wolf Greenfield & Sacks PC.
The case closed on 6 February 2024 — just 132 days after filing — when the Federal Circuit granted Amatech’s motion to voluntarily dismiss the appeals pursuant to Federal Rule of Appellate Procedure 42(b). The court simultaneously ordered that each side bear its own costs, meaning neither party received a cost award. The basis of termination is recorded as voluntary dismissal; the public record does not specify whether the dismissal was with or without prejudice.
Resolution in under five months at the Federal Circuit is notably swift and suggests the parties may have reached a private accommodation, or that Amatech assessed its appellate prospects and elected to exit before incurring further litigation costs. Because the record is silent on prejudice terms and any licensing or settlement arrangements, the full strategic rationale remains unknown. The own-costs ruling is consistent with a negotiated exit rather than a contested outcome.
Filing to resolution in 132 days
132 days — resolved well under the Federal Circuit’s typical appeal timeline
What Amatech’s voluntary dismissal under FRAP 42(b) means for both parties
FRAP 42(b): voluntary dismissal at the appellant’s election
Federal Rule of Appellate Procedure 42(b) permits an appellant to move for voluntary dismissal of an appeal at any time. Here, Amatech — the party that brought the appeal — chose to withdraw. The court granted the motion as a matter of course. This mechanism places the decision entirely with the appellant and does not require the appellee’s consent, though Infineon was consulted on cost allocation.
Appellant-initiated exitWith or without prejudice? The public record is silent
A dismissal ‘with prejudice’ would bar Amatech from re-raising the same appellate claims; ‘without prejudice’ would preserve that option. The court order in this case does not specify either designation. This distinction matters materially for assessing whether the underlying patent validity questions remain live. Practitioners should treat the prejudice status as unresolved on the public record and monitor any subsequent filings by Amatech.
Prejudice terms unconfirmedEach side bears own costs — a neutral financial outcome
The Federal Circuit ordered that each party absorb its own appellate costs. In contested dismissals, cost awards can signal leverage or wrongdoing. The mutual own-costs outcome here is consistent with a negotiated or strategically agreed exit, rather than a finding against either party. It does not preclude separate commercial arrangements made outside the court record.
No cost award to either sideUS9633304B2 validity remains subject to the underlying tribunal’s finding
Because Amatech dismissed the appeal rather than obtaining a reversal, the patentability determination made below — whether cancellation or invalidity — stands unless challenged through another avenue. Competitors and licensees in the smart card booster antenna space should assess the current enforceability status of US9633304B2 in light of the unchallenged lower ruling, as the patent’s claim scope may be narrowed or voided.
Underlying ruling standsFull party and counsel information
| Role | Name | Type | Detail |
|---|---|---|---|
| Plaintiff | Amatech Group, Ltd. | Company | Smart card technology company — holder of US9633304B2, booster antenna configurationsSearch in Eureka ↗ |
| Defendant | Infineon Technologies, AG | Company | Infineon Technologies AG — global semiconductor and smart card chip manufacturerSearch in Eureka ↗ |
| Plaintiff counsel | Christopher V. Carani | Attorney | Counsel for Amatech Group, Ltd.Search in Eureka ↗ |
| Defendant counsel | Richard Giunta | Attorney | Counsel for Infineon Technologies, AGSearch in Eureka ↗ |
| Presiding judge | Judge / | Chief Judge | Court of Appeals for the Federal Circuit — Chief JudgeSearch in Eureka ↗ |
Stipulation of dismissal — official text
The Federal Circuit’s order grants Amatech’s motion under FRAP 42(b) and disposes of the appeals entirely, with no substantive ruling on the merits of the patentability challenge. The order’s silence on prejudice means the dismissal’s preclusive effect is ambiguous from the public record. The own-costs direction confirms neither party was penalised, consistent with a structured exit. Infineon retains the benefit of the unchallenged lower patentability finding.
US9633304B2 — Booster Antenna Configurations for Smart Card Systems
US9633304B2, filed under application number US14/948390, protects booster antenna configurations and methods — a core enabling technology in dual-interface and contactless smart card systems. Booster antennas are used to extend and amplify the communication range between a card’s chip module and an external reader, operating within near-field communication (NFC) and RFID frameworks. The patent sits within a technically competitive domain as contactless payment, transit, and identity card markets have expanded rapidly. Amatech Group, a specialist in smart card inlay technology, held this patent as part of its antenna design portfolio.
The strategic value of US9633304B2 lies in its application to high-volume contactless card manufacturing, where antenna coupling efficiency directly impacts product performance and compliance with ISO/IEC 14443 standards. Infineon Technologies — a dominant supplier of smart card chips and modules — represents precisely the type of defendant for whom this patent’s validity is commercially significant. The invalidity or cancellation action that prompted this appeal suggests a competitor sought to clear the patent from the field. With the appeal dismissed and the lower finding unchallenged, the patent’s enforceability warrants careful monitoring by anyone designing or sourcing smart card antenna components.
Should your team run an FTO against US9633304B2?
Any organisation designing, manufacturing, or integrating booster antenna systems for smart cards — including card personalisation bureaus, inlay manufacturers, chip module suppliers, and transit or payment card OEMs — should assess whether US9633304B2 still poses an infringement risk. The underlying patentability finding may have narrowed or invalidated claims, but until the patent’s full prosecution and post-grant history is reviewed, its residual claim scope should not be assumed to be zero. The risk is most acute for teams working on dual-interface card architectures.
PatSnap Eureka’s FTO Search Agent can map the claim landscape of US9633304B2 against your product specifications, surface relevant prior art cited in the invalidity proceedings, and flag any continuation or divisional applications in Amatech’s antenna portfolio that may carry overlapping claims. Claim monitoring alerts will notify your team if the patent’s status changes following the Federal Circuit dismissal, helping you respond before enforcement risk materialises.
Run a freedom-to-operate analysis on US9633304B2 to assess your product’s exposure
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What this case signals for the smart card antenna IP landscape
A swift voluntary dismissal at the Federal Circuit in a core booster antenna patent case has measurable implications for anyone operating in contactless smart card technology.
Patent challengers: validity of US9633304B2 may be weakened
Amatech’s decision not to pursue its appeal suggests the underlying patentability finding against US9633304B2 now stands. Competitors and product teams in the smart card antenna space should review whether the patent’s enforceable claim scope has been materially reduced, and factor this into FTO and design-around analyses.
Own-costs orders in voluntary dismissals typically signal a clean exit
When both sides agree to bear their own costs at the Federal Circuit, it typically signals a negotiated resolution rather than a unilateral retreat. This pattern is consistent with a confidential settlement or cross-licensing arrangement — though no public record confirms this. IP teams monitoring Amatech’s enforcement posture should watch for subsequent licensing activity.
Amatech v Infineon — key questions answered
Amatech Group Ltd. voluntarily dismissed its Federal Circuit appeals against Infineon Technologies AG on 6 February 2024 under FRAP 42(b), just 132 days after filing. The case concerned a patentability challenge — invalidity or cancellation — relating to US9633304B2, which covers booster antenna configurations for smart card systems. The court ordered each side to bear its own costs.
US9633304B2 (application US14/948390) is a patent held by Amatech Group Ltd. covering booster antenna configurations and methods for smart card systems. Booster antennas are used in contactless and dual-interface smart cards to enhance NFC and RFID communication range between the card chip module and an external reader — a critical component in payment, transit, and identity card applications.
A voluntary dismissal under Federal Rule of Appellate Procedure 42(b) means the appellant — here, Amatech — withdrew its appeal before any substantive ruling. The Federal Circuit issued no decision on the merits. This means the underlying patentability finding (invalidity or cancellation) stands unchallenged at the appellate level. The public record does not specify whether the dismissal was with or without prejudice.
The Federal Circuit’s order explicitly directed each side to bear its own costs following Amatech’s voluntary dismissal motion under FRAP 42(b). This outcome is consistent with a negotiated or mutually agreed resolution. It does not indicate fault or wrongdoing by either party. No public record confirms whether a separate commercial arrangement — such as a licence — accompanied the dismissal.
Amatech Group Ltd. was represented by Christopher V. Carani of McAndrews, Held & Malloy, Ltd. Infineon Technologies AG was represented by Richard Giunta of Wolf Greenfield & Sacks PC. Both firms are well-established in US patent litigation and Federal Circuit appellate practice.
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