Home » UPC decisions » Luxembourg Court of Appeal » Court of Appeal, December 24, 2025, Order concerning an application for leave to appeal against a cost decision, UPC-COA-0000911/2025

Court of Appeal, December 24, 2025, Order concerning an application for leave to appeal against a cost decision, UPC-COA-0000911/2025

3 min Reading time

Key takeaways

The Court of Appeal only intervenes if awarded costs are beyond “reasonable and proportionate” or deviate from principles inherent in Art. 69 (1) UPCA and R. 150 et seqq. The Court of Appeal recognizes that the first-instance judge-rapporteur is best placed to decide on costs having managed the case step by step throughout the various stages of the proceedings.

Proportionality is checked against the cost ceiling, determined by the action’s value. Within that ceiling, the court qualitatively assesses if the costs for the successful party’s activities were reasonable.

The applicant’s argument that pending rehearing applications in related proceedings should be considered was dismissed by the Court as “not relevant in the present case” for the cost appeal.

Division

Court of Appeal

UPC number

UPC-COA-0000911/2025 (Appeal Number)

UPC_CFI_724/2025, ACT_34440/2025 (Decision under appeal)

Type of proceedings

Application for leave to appeal a cost decision

Parties

Applicant: Suinno Mobile & AI Technologies Licensing Oy

Respondent: Microsoft Corporation

Patent(s)

EP 2 671 173

Body of legislation / Rules

Art. 69 UPCA
R. 150 RoP
R. 151 RoP
R. 152 RoP
R. 156 RoP
R. 221 RoP
R. 223 RoP
R. 370.6 RoP


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  • German and European Patent Attorney, UPC Representative, Senior Associate

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