There are two ways of establishing paternity. The first is under the Family Law Act. The second is under the Status of Children Act 1974 (Vic.)
The Family Law Act establishes certain presumptions of parentage. Like all legal presumptions, they may be counteracted by proof to the contrary on the balance of probabilities.
In other words, the Family Law Act presumes that the man is the father of any child arising from the following:
? Marriage
? Cohabitation (or the child being born within 20 weeks of the party separating)
? Acknowledging paternity by an instrument such as a birth certificate