1. The President of the Republic requested from the Constitutional Court the preventive investigation of the constitutionality of the provisions of articles Nos. 1, 2, 4 and 5 of Parliamentary Decree No. 9/XI, which allows civil matrimony between members of the same gender.

2. The request for investigation of constitutionality was accompanied by a juridical opinion subscribed by Professor Doctor Diogo Freitas do Amaral.