For conscientious practitioners, innovative medical therapy often occupies an uncomfortable space between formal research and established clinical practice. Newer and more rapid methods of information dissemination increase the risk of advertising unproven therapies. These and other concerns should not stifle medical progress and innovation but require guidelines and boundaries. The problem is not unique to fetal therapy, but rarely do other fields consider the well-being of two individuals at the same time. Herein, the North American Fetal Therapy Network offers expanded guidelines and suggestions regarding medical innovation that are particular to maternal-fetal therapy.