The French Cour de Cassation’s in Banque Privee Edmond de Rothschild Europe v X held that a unilateral jurisdiction clause was invalid under (doubtful) reference to (then) Article 23 of the Brussels I Regulation. The clause was held not to be binding under the French doctrine of clauses potestatives, even though the agreed forum was Luxembourg (whence the validity of the clause was judged under the lex fori derogati, not prorogati; that will no longer be possible under the recast Jurisdiction Regulation). In Credit Suisse, it extended this view (without reference this time to clauses potestatives) to choice of court in the context of the Lugano Convention.
In Apple Sales international v eBizcuss.com, the Cour de Cassation effectively qualifies its Rotschild case-law. The Court of Appeal held as unacceptable, under the theory of clauses potestatives, choice of court obliging eBizcuss to sue in Ireland, while allowing Apple Sales International to sue either in Ireland, or the place of registered office of eBizcuss, or any place where Apple Sales would have suffered damage. The Cour de Cassation now held that this clause is perfectly acceptable under Article 23 (now 25)’s regime for it corresponds to the need of foreseeability. (Which more extreme unilateral clauses arguably do not have). As always, the judgment is scant on details of the underlying contract whence it is not entirely clear whether French law was lex contractus or whether the Cour stuck to lex fori as determining validity of choice of court.