Griswold v. Connecticut was a major Supreme Court case from 1965. In this case, the Supreme Court held for the first time that the Constitution creates a right of privacy that all Americans enjoy. The Court ruled that this right to privacy made it illegal for states to have laws banning the use of contraceptives.
There is no right to privacy that is explicitly stated in the Constitution. However, in Griswold, the Court found that various parts of the Constitution imply that there is a right to privacy. The Court held that the First, Third, Fourth, and Ninth Amendments, taken together, imply that there is a right to privacy that is protected by the Constitution.
This ruling became even more important and controversial 8 years later when it became the basis for the Court's decision in Roe v. Wade.