The judgment is an answer to a general legal question as to whether Polish law allows the incorporation of foreign birth certificates where parents are of the same sex. The question was prompted by the authorities' refusal to transcribe into Polish law the foreign birth certificate of a child born to two mothers, both of whom are Polish nationals. The applicant argued that since lack of a transcribed birth certificate inhibits her child's access to a Polish passport, it in practice leads to a situation that is identical to statelessness.
The applicant was born in the US, and his birth certificate indicated a Polish national as the father, and an unknown surrogate mother as the mother. Polish authorities refused to confirm the applicant acquired Polish nationality at birth as a child of a Polish parent, because the birth certificate is against the Polish public order, in particular the prohibition of surrogacy. The courts ruled in favour of the applicant, stating that confirmation of his Polish nationality on the basis of the birth certificate does not amount to validation of surrogacy.
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.