Article R222-7 of the French Code of civil enforcement procedures
Where the property is held by a third party, a summons to surrender the property is served directly on the third party. The summons is served by registered letter with acknowledgement of receipt to the person required to deliver or return the property. Under penalty of nullity, this summons shall contain : 1° A copy of the enforceable title under which the surrender is required and, in the case of…