Here are a list of precedents for the case.
Union Pacific R.Co. v. Botsford (1871): The Court has recognized that a right of personal privacy, or a guarantee of certain areas or zones of privacy, does exist under the Constitution.
Griswold v. Connecticut (1965): A right to privacy exists in the penumbras of the Bill of Rights.
Loving v. Virginia (1967): Freedom of personal choice in matters of marriage and family life is one of the liberties protected by the Due Process Clause of the Fourteenth Amendment.
Eisenstadt v. Baird (1972): The Court recognized the right of the individual, married or single, to be free from unwarranted governmental intrusion into matters so fundamentally affecting a person as the decision whether to bear or beget a child.