UPDATE: With the passage of the Massachusetts Parentage Act, the definitions of legal parentage have been updated by the legislature.  Read this article to learn more:  The Massachusetts Parentage Act by Polly Crozier, Director of Family Advocacy, GLBTQ Legal Advocates & Defenders Original Post: As discussed in our previous post, in order to include the father's name on the birth certificate he and the mother must sign a Voluntary Acknowledgment of Paternity.  If a mother or father refuses to sign the Voluntary Acknowledgement of Paternity, then paternity can only be established by court action and the mother alone will appear on the birth certificate until there is an order of the court to add the father. If the father or mother wants to establish paternity of a child in Massachusetts, then either party can file a Complaint to Establish Paternity with the Probate and Family Court.  If the presumed father denies or is unsure that he is the father of the ch...