There are multiple definitions - click on the translation that matches your context.

Zwischenfeststellungsklage

Substantiv

partial

interlocutory proceedings

Definitions of interlocutory proceedings

English

a court hearing dealing with a specific issue related to a trial, either before the trial takes place or before the end of the trial. Interlocutory proceedings often deal with the rights of the parties and include such matters as applications for extensions of time, compelling a party to comply with the court's directions, or applications for temporary relief before judgment

The company has ten business days to start interlocutory proceedings.