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ACT 588685/2023

—·EP3404726: ULTRAVIOLET LIGHT-EMITTING DEVICE

Case details
Status
—
Action
Infringement
Category
Main Infringement Action
Parties
Claimants
Reps: Pauline Debré; Laetitia Nicolazzi
Respondents
Reps: Helge von Hirschhausen
Division
Paris LD
Judges
Technology
Semiconductors · UV LEDs · Semiconductor Devices
Language
—
First decided
Feb 17, 2025
Last decision
Apr 24, 2025
Claims
At issueall
Infringedall
Notes: Paris LD found infringement of EP3404726 B1 (UV-C LED device) by Laser Components SAS; decision in French language does not enumerate specific claim numbers in the excerpts; infringement order refers to the patent generally.
Decisions
  • 2025-04-24
    InfringedInjunction grantedInfringement meritsInfringement Action

    The Paris Local Division found that Laser Components SAS infringed EP 3 404 726 owned by Seoul Viosys Co. Ltd., ordered corrective measures including withdrawal and destruction of infringing UV-C LED chips from the French market, and directed disclosure of information for damages calculation, while reserving the quantum of damages for a separate procedure.

    Legal issues:Patent infringement of UV-C LED chip patentClaim interpretation (mesa indentations, passivation layer openings)Corrective measures (Art. 64 UPCA)Information disclosure for damages calculation
    Damages: Liability declared, amount deferred
Documents
  • 27574886A4850CCADF87E31DEB1F1F53_fr.pdf2025-04-24FR
Coverage: Thin.Reasoning extracted with limited coverage — see decisions tab for full text.
Plain-English summary

Seoul Viosys sued Laser Components SAS for infringement of its UV-C LED chip patent EP 3 404 726 in France, with Photon Wave (Korean manufacturer) joining as an intervener. The Paris Local Division found infringement and ordered Laser Components to withdraw and destroy its stock of infringing UV-C LED chips with an astreinte, to disclose distribution and sales information for damages calculation, and declared Laser Components liable for damages to be quantified in separate proceedings; a EUR 50,000 provisional cost contribution was also awarded.

Accepted arguments
What the court agreed with — by party.

  • EP 3 404 726 is infringed by Laser Components SAS's UV-C LED chips sourced from Photon Wave

    ClaimantLegal basis: Art. 64 UPCA

    Note: The Paris Local Division found infringement of Seoul Viosys's UV LED patent by Laser Components' commercially supplied UV-C LED chips on the French market.

  • Corrective measures including withdrawal and destruction of infringing products are appropriate

    ClaimantLegal basis: Art. 64 UPCA

    Note: The court ordered Laser Components to withdraw infringing UV-C LED chips from the French market and destroy its stock, with an astreinte of up to EUR 50 per product.

Rejected arguments
What the court did not agree with — and why.

No rejected arguments captured.

Key legal principles
Doctrines and rules cited in the reasoning.
direct infringement of UV LED patentcorrective measures under Art. 64 UPCA (withdrawal and destruction)information disclosure for damages calculationprovisional damages and cost allocation

Browse other cases on this principle.

Claim construction notes

The Paris Local Division's decision concerns EP 3 404 726 (ultraviolet light-emitting device with specific electrode and passivation layer architecture including mesa indentations and bump electrodes). The excerpt contains the full claim text of the maintained claims but does not include detailed claim construction reasoning, as the decision is primarily presented in its operative part.