>>9
If the fetus is not sentient, then it is part of the woman's body so it is her decision. When the man ejaculated into her sexual organs I would think that was the man's decision to part with his semen and the intellectual property of a random 50% of his genes. I guess they would have to compose a contract before making the exchange.
If the fetus is sentient, then it is no longer either the woman's or the man's decision.