Idea for persons with a functioning uterus: Form a corporation. Transfer ownership of one's uterus to the corporation in exchange for its stock – we know it's possible for one live person to donate a kidney to someone else, so get hold of the legal forms used to make such a donation and modify them as needed. You don't have to actually remove your uterus from your body; the paperwork can stipulate that it remains in you for safekeeping. Make sure that the corporation observes all of the "corporate formalities" (certificate of formation filed with the Secretary of State, Board meetings, resolutions, franchise taxes paid or exemption obtained, etc.), so it can't be claimed that the corporation is a sham.

Now if you want to have an abortion and someone tries to stop you, the corporation can file for an injunction confirming that the uterus is its property and that the fetus is an unpermissioned trespasser and that the corporation requires that it be evicted as soon as possible and that the corporation must be fully compensated by anyone interfering with the corporation's rights and for any damages incurred by the corporation in connection with such interference, etc.