Article R444-13 of the French Commercial code
I.-The professionals referred to in the first paragraph of article L. 444-1 are prohibited from requesting or receiving for services subject to tariffs any sum other than those set by these tariffs. II.-They are also prohibited from charging or receiving, in respect of the services referred to in the third paragraph of Article L. 444-1, any sum other than the fees stipulated in the fee agreement provided for in that…