El tema medular de la proteccion juridica del concebido es la determinacion del momento desde cuando se entiende empieza o existe vida. Los sistemas juridicos del common law y del civil law tienen divergentes modelos normativos, jurisprudenciales y doctrinales que imponen soluciones distintas a las controversias sobre las varias hipotesis de fecundacion medicamente asistida y de la consecuente responsabilidad medica y en especifico por los danos wrongful birth y wrongful life . En esta ultima categoria, el individuo puede hacer valer un derecho invocando la reparacion del dano a su salud provocado durante la concepcion, en el ejercicio del derecho a no nacer. The main issue with regard to the legal protection of fetuses is determining when life is understood to begin or exist. Common law and civil law systems have different statutory, case law, and doctrinal approaches to this problem. Such disparities lead to different solutions to the controversies brought about by the diverse hypotheses of artificial insemination and by the resulting medical responsibility, particularly through the causes of action called wrongful birth and wrongful life. In the legal action known as wrongful life, a person can exercise his or her rights by demanding compensation for damages to his health caused during conception, as part of the right not to be born.