1. The competent authorities shall, promptly and in any event within two working days following receipt of the notification required under the first subparagraph of Article 11(1), as well as following the possible subsequent receipt of the information referred to in paragraph 2 of this Article, acknowledge receipt thereof in writing to the proposed acquirer.

The competent authorities shall have a maximum of sixty working days as from the date of the written acknowledgement of receipt of the notification and all documents required by the Member State to be attached to the notification on the basis of the list referred to in Article 13(4) (the 'assessment period'), to carry out the assessment.

The competent authorities shall inform the proposed acquirer of the date of the expiry of the assessment period at the time of acknowledging receipt.

2. The competent authorities may, during the assessment period, if necessary, and no later than on the 50th working day of the assessment period, request any further information that is necessary to complete the assessment. Such request shall be made in writing and shall specify the additional information needed.