Not so simple..."Η παρένθετη μητρότητα αποτελεί σήμερα απαγορευμένη πρακτική στην Ιταλία, την Αυστραλία, την Ισπανία και την Κίνα, ενώ επιτρέπεται υπό περιορισμούς στις ΗΠΑ, τη Γαλλία και τη Γερμανία".Although laws differ widely from one jurisdiction to another, some generalizations are possible:The historical legal assumption has been that ***the woman giving birth to a child is that child's legal mother***, and the only way for another woman to be recognized as the mother is through adoption (usually requiring the birth mother's formal abandonment of parental rights).Η νομοθεσία δύναται να είναι διαφορετική σε κάθε χώρα:United Kingdom:Commercial surrogacy arrangements are not legal in the United Kingdom. Such arrangements were prohibited by the Surrogacy Arrangements Act 1985. Whilst it is illegal in the UK to pay more than expenses for a surrogacy, the relationship is recognised under section 30 of the Human Fertilisation and Embryology Act 1990. Regardless of contractual or financial consideration for expenses, surrogacy arrangements are not legally enforceable so a surrogate mother maintains the legal right of determination for the child, even if they are genetically unrelated. ***Unless a parental order or adoption order is made, the surrogate mother remains the legal mother of the child***http://en.wikipedia.org/wiki/Surrogacy_laws_by_countryΣτη Ελλάδα, όπως και σε άλλα ευρωπαϊκά κράτη, αποτρέπεται το εμπόριο τέτοιου είδους, καθώς υφίσταται σαφής νομοθεσία που επιτρέπει την παρένθετη μητρότητα και καθορίζει το πλαίσιο βάσει του οποίου μπορεί να διενεργηθεί.Traditional, Commercial and Social Surrogacy are explicitly prohibited by the Law and Gay Surrogacy is implicitly prohibited in a country where civil unions between same-sex couples are not recognized by the law. ***The commissioning parents become legal parents of the child right after the birth, the same way the biological parents do (an exception to the rule mater semper certa est)***. According to the art. 1464 of the Greek Civil Code, “in case of artificial insemination where there is a surrogate mother, provided that the conditions of art. 1458 have been met, as mother of the child is presumed the commissioning mother who obtained the court’s authorization.” However, within six months after the birth, the surrogate mother or even the commissioning mother can challenge the establishment of legal kinship if they can prove that the surrogacy was traditional (full) (δηλαδή και κυοφορούσα και βιολογική μητέρα). After the final irrevocable court decision the surrogate mother becomes retrospectively the legal mother.http://users.uoa.gr/~ahatzis/Surrogacy.pdf