While their are legal protections for supermarket donors in most states, fathers of surrogate children are not protected from child support unless they go through a sperm bank.
We had a case in Pennsylvania a few years ago where a surrogate mother changed her mind and decided to keep her triplets.
She then sued the father sperm donor who was a Dr and won a hefty child support.
I am genuinely surprised to learn that in vitro fertilization and the implantation of embryos had been going on "for centuries."
/sarcasm
Regards,