1.

In a situation such as that described in the case in the main proceedings, must EU law be interpreted to the effect that the consequence of the conflict of a legislative provision of a Member State with the third subparagraph of Article 2(2) of Regulation (EEC) No 3950/92 ( 1 ) is that producers are not obliged to pay the additional levy if the conditions laid down by that Regulation are met?

2.

In a situation such as that described in the case in the main proceedings, must EU law and, in particular, the general principle of protection of legitimate expectations, be interpreted as meaning that the expectations of persons who have performed an obligation laid down by a Member State and have benefited from the effects associated with performance of that obligation may not be protected, if that obligation has proved to be in conflict with EU law?

3.

In a situation such as that described in the case in the main proceedings, do Article 9 of Regulation (EC) No 1392/2001 ( 2 ) of 9 July 2001 and the EU concept of ‘priority category’ preclude a provision of a Member State, such as Article 2(3) of Decree-Law No 157/2004, adopted by the Republic of Italy, which lays down varying methods for refunding an additional levy that has been over-charged, drawing a distinction, in terms of timetables and methods of repayment, between producers who have relied upon due compliance with a national provision that has proved to be in conflict with EU law and producers who have not complied with such a provision?