Article R518-40 of the French Monetary and Financial Code
Sums deposited voluntarily may only be seized in the cases, forms and under the conditions provided for in articles L. 211-1 to L. 211-5, L. 162-1 and L. 162-2, L. 511-1 to L. 511-4, L. 512-1 and L. 512-2 of the Code of Civil Enforcement Procedures. Oppositions may nevertheless be received, without the said forms being observed, from the depositor who declares that he has lost his receipt.