Article R143-1 of the French Commercial code
Where the sale of the business has not taken place at public auction in accordance with articles L. 143-3 to L. 143-8, L. 143-10 and L. 143-13 to L. 143-15, the purchaser who wishes to secure himself from the proceedings of registered creditors is required, on pain of forfeiture, before the proceedings or within fifteen days of the summons to pay, to notify them, at the address elected by them…