When I decide to hold an international arbitration in Paris, am I free to choose the language of the procedure and the law that will govern my contract?

Yes. There is no need to use the French language or French law in an arbitration seated in Paris. It is usually recommended to select as the language for the arbitration the language or languages used for the contracts or for the majority of communications between the parties. It is also recommended to state in advance the law that applies to the contract. In the absence of such a choice, arbitrators in France, unlike judges, are not required to follow national conflict of laws rules in order to decide which law they will use to decide the case.