Today, the non-institutionalized family model has reached its own social and legal entity, coexisting with the matrimonial legal institution. In a globalized society such as the European, it is more common to have mixed partnerships, whose members have different nationalities where the international character can not only be determined by the nationality of the partners or by the possession of goods in different States of the EU, but also by their residence in a country different from that of the nationality, or by the dissolution of the couple or death of one of them in countries other than those of origin. All this entails the production of a series of personal and patrimonial effects that must be regulated by means of coordination measures that facilitate a good administration of justice and avoid as far as possible the dispersion of the lawsuit or the application of different laws to the family issues concerned in each procedure, is the purpose of the Regulations (EU) 2016/1103 and 2016/1104, both of the Council and dated June 24, 2016, which are the new regulation of the economic regimes of couples composed of citizens of different nationalities of the EU, both marital and non-marital.