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Seoul Viosys v expert klein (CFI, 14 April 2025)

Date14 April 2025
CourtCFI
DivisionDüsseldorf (DE) Local Division
Type of actionApplication For Costs
Registry referenceACT_60376/2024 · ORD_66860/2024
PartiesSeoul Viosys Co., Ltd. v. expert klein GmbH, expert e-Commerce GmbH

Official decision (PDF) · UPC registry entry

Dhenne Avocats represents claimants and defendants in European patent disputes before the Unified Patent Court, including the Paris divisions.

Contact the firm

Dhenne Avocats · 10 October 2026

Our analysis

Summary

By decision of 14 April 2025 (ACT_60376/2024, UPC_CFI_363/2023 and UPC_CFI_677/2024), Presiding Judge Thomas, acting as judge-rapporteur of the Düsseldorf Local Division, fixed the costs owed to Seoul Viosys following the decision of 10 October 2024, which had upheld the infringement action on EP 3 926 698 and dismissed the counterclaim for revocation. expert e-Commerce and expert klein must each pay EUR 31,982.85 for the action, and expert klein a further EUR 51,112.73 for the counterclaim, within 21 days of service. The interest lies in the effect of an agreement reached at the hearing on EUR 100,000.

Question

Did the parties’ agreement on recoverable costs of EUR 100,000 cover all the costs of the proceedings (paragraph 7) or only representation costs?

Decision

The application, filed within one month of the decision, was admissible (paragraphs 10 and 11). The EUR 100,000 had been accepted as recoverable and split equally between the action and the counterclaim, but nothing showed that Seoul Viosys had waived costs above that figure. The Administrative Committee’s ceilings in any event apply only to representation costs (paragraph 15). Travel and test-purchase costs are recoverable if they are necessary, assessed ex ante, and appropriate in amount (paragraphs 16 to 18), the judge saw no objection to them here (paragraph 19).

Key points for practice

Provisions applied

Agreement on a Unified Patent Court
Art. 69(1)
Rules of Procedure
Rules 150, 151, 152.1, 152.2, 221.1, 300(c) and 301.1
Other provisions
Decision of the Administrative Committee of 24 April 2023 on the scale of ceilings for recoverable costs (D-AC/10/24042023_D), Art. 1(2)
Case law cited
Munich Local Division, 19 March 2025, UPC_CFI_696/2024

Prepared by Dhenne Avocats from the official decision, consulted on 10 October 2026. The database is updated every week, on Friday. Only the official text is authoritative.


Going further

Lexicon: Court fees and costs (UPC).

Source and translations

Official source
Unified Patent Court registry link recorded in the record
Original language
not recorded
Translation available
no translation recorded the firm’s French record is a summary, not a translation
Date checked
not recorded
Only the official text is authoritative. A machine translation is never presented as official, republishing a third-party document requires a verified basis in rights, and a link to the source is preferred.

Follow this case

Proceedings, related decisions, appeals, parties and patents as recorded in the registry and in the Dhenne Avocats corpus. Each link states its source.

Proceedings

No case number recorded in this record.

Parties

Exact name as it appears in the record, group affiliation only where sourced and dated.

Decisions in the same proceedings and documented appeals

No other decision in the corpus bears the same case number, and no appeal is documented in the corpus to date.

What the record states

Nature of the act
Application For Costs
Outcome (Dhenne Avocats summary)
Les frais dus à Seoul Viosys sont fixés à 31 982,85 EUR par défenderesse pour l'action et à 51 112,73 EUR pour la demande reconventionnelle. L'accord sur 100 000 EUR ne vaut pas renonciation aux frais de déplacement et d'achat test.
Appeal
No appeal documented in the corpus, this does not mean that no appeal was lodged.
Instance
First-instance decision, whether it has become final is not recorded.

Patents mentioned

Related decisions cited in the analyses

Scope: Dhenne Avocats corpus. Registry-based links are marked “official number”; links derived from the analyses are marked as such. An erroneous link can be withdrawn without deleting any record.

Patents and standards

PublicationRole in the disputeFamilyStandard and declarationPoolSources
EP 3 926 698
Light emitting diode
recorded proprietor: Seoul Viosys Co Ltd
Mentioned in the analysis (role not qualified)
Also mentioned in 11 other decision(s): Emporia UK v Seoul Viosys (CFI, 30 March 2026) · expert klein v Seoul Viosys (CoA, 2 October 2025) · Seoul Viosys v expert e-Commerce (CFI, 10 April 2026) · Seoul Viosys v Emporia UK (CFI, 1 September 2025) · Seoul Viosys v expert klein (CoA, 21 August 2025) · Seoul Viosys v expert klein (CFI, 10 October 2024) · Seoul Viosys v expert e-Commerce (CFI, 5 August 2024) · Seoul Viosys v expert e-Commerce (CFI, 12 July 2024)
not recordednot recordednot recordedEspacenet · European Patent Register
existence and title of the publication checked on 30 October 2026 (Google Patents, Espacenet and Register links are not checked automatically)
mentioned in: Dhenne Avocats analysis
The statuses “asserted in litigation”, “declared essential”, “listed by a pool” and “essentiality examined by a court” are distinct and may coexist. Validity, infringement and technical essentiality are different questions. Scope: patents cited in the decisions of the Dhenne Avocats corpus, with no essentiality score or prediction.

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