Social and technological developments tend to occur more quickly than changes in family law, but courts and legislation usually catch up over time. The U.S. Supreme Court's recent decision in Obergefell v. Hodges, striking down bans on same-sex marriage, is a prime example.
Another area of family law that is gradually developing involves freezing embryos produced by in vitro fertilization. For various reasons, more and more spouses and unmarried partners are using IVF to conceive children. Sometimes, though, the couples get divorced or separate before the frozen embryos are used, and this can result in legal disputes over who has control over the embryos.