Article L3122-3 of the French Public procurement code
The conceding authority may not communicate confidential information that it holds in the context of a concession contract, such as information the disclosure of which would violate business secrecy, or information the disclosure of which could harm fair competition between economic operators, such as the communication during the consultation of the overall or detailed value of bids.However, the conceding authority may ask economic operators to consent to the disclosure of…