Article R222-18 of the French Code of civil enforcement procedures
The validity of the seizure-claim is subject to the conditions set out in Articles R. 511-2, R. 511-3 and R. 511-5 to R. 511-8 for protective measures. If these conditions are not met, release of the seizure may be ordered at any time, even in cases where article L. 511-2 allows this measure to be taken without the judge’s authorisation.