Legal parentage is a critical part of the creation, stability and protection of modern families and those formed through assisted conception. However, all too often parents, children and families experience problems, disputes, uncertainty and anxiety about legal parentage in the UK and around the world. Earlier this week (16 November 2020) the Supreme Court refused permission to hear a transgender man’s case to be recognised as the legal father of the child to whom he gave birth. Articles in the media this week also report that Japan is currently looking at revising its assisted reproduction law with a draft bill, which if approved, would for the first time enable those who conceive with donor eggs and sperm to become legal parents in Japan.