See here
Interim and precautionary measures are ordered by a judge (cf. answer to question 3). They may be adopted whenever they become necessary, be it before or during the main proceedings. A distinction can be drawn between “typical” measures, where the content of the measure is determined by law, and “atypical” measures, where the law gives the judge discretion to decide the most appropriate way to safeguard the rights of the person lodging the action
http://ec.europa.eu/civiljustice/interim_measures/interim_me...