Home » UPC decisions » Local Division » Duesseldorf Local Division » LD Duesseldorf, October 6, 2026, Decision, UPC_CFI_137/2025, UPC_CFI_512/2025

LD Duesseldorf, October 6, 2026, Decision, UPC_CFI_137/2025, UPC_CFI_512/2025

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Key takeaways

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Where the claimant’s experimental data fails to isolate the alleged buffering effect from the geometry of multiple casing inlets, the proof remains inconclusive on its face. In such circumstances, the defendant’s general denial is sufficient, and no obligation arises under Rule 171(2) RoP to produce experimental counter-measurements.

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The definition of the attacked embodiment is not confined strictly to the specific physical device inspected. It encompasses all products marketed or offered by the defendant in the relevant territories that embody the decisive technical features alleged by the claimant to infringe.

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Claim interpretation must be identical for validity and infringement. Broad functional terms – such as reference gas inlets, conduits, or buffer chambers – are not limited to dedicated, sealed, or obstacle-free components merely because exemplary patent embodiments depict them as such.

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Amending restrictive language like “adapted to” to open phrasing like “permits to” does not violate Art. 123(2) EPC where both formulations express the same technical capability in context, and where the original specification explicitly supports mixing being permitted.

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An obviousness finding requires establishing that the skilled person would—and not merely could—have arrived at the claimed solution. Without a technical motivation to combine distinct teachings, missing features disclosed in secondary art cannot be considered obvious.

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Rule 150.2 RoP presupposes an identifiable overall prevailing party and an amount clearly due. Where the claimant fails on infringement and the defendant fails on revocation, no single successful party exists, requiring cost recovery to await formal cost-decision proceedings.

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Division

Local Division Duesseldorf

UPC number

UPC_CFI_137/2025, UPC_CFI_512/2025

Type of proceedings

Infringement action and counterclaim for revocation

Parties

Claimant / Counterdefendant: Inficon GmbH
Defendants / Counterclaimants: Elitech Technology, Inc., Elitech UK Ltd.

Patent(s)

EP 3 567 356 B1

Body of legislation / Rules

Rule 13.1(l) RoP
Rule 19.1 RoP
Rule 19.7 RoP
Rule 30 RoP
Rule 118.5 RoP
Rule 118.8 RoP
Rule 119 RoP
Rule 150.2 RoP
Rule 151 et seq. RoP
Rule 152.2 RoP
Rule 171(2) RoP
Rule 352.1 RoP
Art. 31 UPCA
Art. 32(1)(a) UPCA
Art. 33(1)(a) UPCA
Art. 33(3) UPCA
Art. 48 UPCA
Art. 69(1) UPCA
Art. 80 UPCA
Art. 54 EPC
Art. 56 EPC
Art. 69(1) EPC
Art. 123(2) EPC
Art. 138(1) EPC


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