Case C-536/07: Judgment of the Court (Fourth Chamber) of 29 October 2009 — Commission of the European Communities v Federal Republic of Germany (Failure of a Member State to fulfil obligations — Public works contracts — Directive 93/37/EEC — Contract between a public body and a private undertaking for the lease to the former of exhibition halls to be built by the latter — Private undertaking to be paid by means of a monthly rent for a period of 30 years)