Judgment of the Court (Grand Chamber) of 2 March 2010.
Janko Rottman v Freistaat Bayern.
Reference for a preliminary ruling: Bundesverwaltungsgericht - Germany.
Citizenship of the Union - Article 17 EC - Nationality of one Member State acquired by birth - Nationality of another Member State acquired by naturalisation - Loss of original nationality by reason of that naturalisation - Loss with retroactive effect of nationality acquired by naturalisation on account of deception practised in that acquisition - Statelessness leading to loss of the status of citizen of the Union.
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