Sirena S.r.1. v. Eda S.r.1. et al. Case 40170. Decision of February 18, 1971.l Preliminary ruling on request of the Tribrinule Civile et Penale of Milan, Italy - Common Market Law Review View Sirena S.r.1. v. Eda S.r.1. et al. Case 40170. Decision of February 18, 1971.l Preliminary ruling on request of the Tribrinule Civile et Penale of Milan, Italy by - Common Market Law Review Sirena S.r.1. v. Eda S.r.1. et al. Case 40170. Decision of February 18, 1971.l Preliminary ruling on request of the Tribrinule Civile et Penale of Milan, Italy 9 1 Common Market Law Review