How does the system ensure that local defendants can understand the patent in issue?

The patentee can be required by the alleged infringer to provide a translation into the language of the country where (1) alleged infringement occurred or (2) the infringer’s domicile is located. The patentee can also be required by the Court to provide a translation into the language of proceedings of the Court.

On appeal, the language of proceedings will typically be the same as at first instance.

Given the possibility of different divisions hearing infringement and revocation proceedings, this could mean that they are heard in different languages.

As a practical matter, the requirement that the UPC sit with multinational panels of judges suggests that English may well become the dominant working language of the proceedings.

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