Article R743-139-13 of the French Commercial code
The Chairman of the National Council or, if he is absent or unable to attend, the Vice-Chairman shall summon the parties by registered letter with acknowledgement of receipt within fifteen days of the referral and at least eight days before the date of the mediation session. A copy of the referral document shall be attached to the summons of the party that did not initiate the mediation. The summons shall…