From a basic terminological clarification, we seek to examine briefly what can be acknowledged as the two biggest attempts of foundation in the Biolaw contemporary area, that of the Kantian tradition and that of the anthropological and metaphysical realism. Through a critical examination of the first one, we attempt to show that only from a freedom or an autonomy assumed from the anthropological and metaphysical realism, is possible to hold a Biolaw as a true impervious limit against the technological power regarding human life and human procreation.