Whether the appeal against the rejection of the mainlevée request remained live after the debtor's bankruptcy.
No. Upon the opening of bankruptcy, the pending enforcement proceeding against the bankrupt debtor ceased to have effect, so the mainlevée proceedings became moot.
Under Art. 206(1) SchKG, proceedings against the bankrupt debtor are extinguished at the opening of bankruptcy. Until a possible suspension for lack of assets under Art. 230(4) SchKG, they are not merely stayed. Therefore the appeal had no object.