The applicant appplicant was born in Russia and renounced his Russian nationality in 2000. He applied for a statelessness status in Luxembourg in 2008, but it was discovered that he had applied for asylum status in the Netherlands in 2006, which was rejected, so Luxembourg transferred the applicant to the Netherlands under the Dublin regulation. The applicant returned several times to Luxembourg and was sent back to the Netherlands. He made a repeated application for statelessness status in 2014, where the courts accepted his argument that statelessness status determination doesn't fall within the scope of the Dublin regulations, and the court also accepted that his voluntary renunciation of Russian nationality does not exclude him from protection under the 1954 Convention.
The applicant acquired Austrian nationality in 1995 and renounced her former Turkish nationality in 1996 as a condition for retaining the Austrian nationality. In 2018 the Austrian authorities declared that she has no longer been an Austrian national since 1997 as it appeared that she voluntarily re-acquired her Turkish nationality at that time, which is a ground for automatic loss of Austrian nationality. The Court set aside the determination of loss of Austrian nationality as it did not carry out a proportionality test on the basis of the Tjebbes judgment.
The applicant received assurance of obtaining Austrian nationality if she renounces her Estonian nationality. After the renunciation, it appeared that the applicant committed two administrative offences related to her driving, which in addition to the eight she committed previously were considered as an indication of her no longer fulfilling the public order requirement for naturalisation. This resulted in the withdrawal of assurance of obtaining Austrian nationality, leaving the applicant stateless.
The applicant received an assurance of acquiring Austrian nationality if she renounces her former, Serbian, nationality. Shortly after the renunciation the applicant lost her job and was unable to find alternative employment due to her statelessness, which resulted in her no longer complying with the income requirement for acquiring Austrian nationality. The Court declares unconstitutional the law which requires continuous fulfilment of all the conditions for naturalisation, even after Austrian nationality has been conditionally granted and the former nationality has been renounced.
The case had been brought before the ECJ for a preliminary ruling, leading to its famous Rottman judgment (CJEU, C-135/08 Rottmann, judgment of 2 March 2010). The Federal Administrative Court rules on the case after the ECJ's judgment. The applicant lost his Austrian nationality when he naturalised in Germany, but his German naturalisation was later revoked as he committed fraud in the naturalisation procedure, rendering him stateless. The Federal Administrative Court upheld the administrative decision to withdraw the German nationality despite the uncertainty about the restoration of the Austrian nationality of the applicant.