Civil Partnership
IMPORTANT
A Brazilian Civil Partnership ("União Estável") as regulated by Brazilian Civil Law does not correspond to the civil partnership according to Finnish Act of Registered Partnership.
The Finnish authorities ( DVV, Migri, etc. ) DO NOT recognize civil partnerships ("união estável") made by Brazil.
For Finland, the civil partnership carried out by Brazil (whether in a notary or at the Embassy) is only valid in Brazilian territory.
According to Finnish legislation, the Finnish "Civil Partnership" has no equivalence to the Brazilian Civil Partnership (União Estável), and it is only possible to register civil partnerships carried out abroad, in Finland, for same-sex couples and only when the union was made due to the lack of legal provision, in the country of origin, of same-sex marriages*.
* For example, in countries where there was no legal provision for same-sex marriages, a stable union was celebrated instead.
However, Brazil same-sex marriage is legal in Brazil since 2013 (before Finland, who legalized it in 2017), so civil partnerships celebrated in Brazil do not fall under the Finnish rule for registration of "Civil partnerships".
Thus, only marriage has equivalent legal treatment in Brazil and Finland, being equally valid in both countries.
More information about getting married in Finland at Marriage - Frequently Asked Questions.
Information about "Civil Partnerships" carried out abroad at https://dvv.fi/en/partnership-registered-abroad
The Finnish Act of Registered Partnership is available at https://www.finlex.fi/en/laki/kaannokset/2001/en20010950.pdf
Those interested in formalizing a União Estável (Brazilian Civil Partnership) for use and with exclusive validity in Brazilian territory should check instructions at "Escritura Pública" (website only in Portuguese).