Article R331-20 of the French Intellectual Property Code
I.-A referral sent to the Autorité de régulation de la communication audiovisuelle et numérique by a rights holder under the conditions provided for in I of Article L. 331-27 shall be made by registered letter with acknowledgement of receipt or by any other means that can be used to certify the date of receipt and the identity of the addressee, including by electronic means. It shall include: 1° A copy…