Does fertility clinic have obligation to protect identity of their own egg donor?

Yes.: Typically, the egg donor is an anonymous, independent contractor working for the fertility clinic. The contract should specifically state that everything is anonymous, unless the egg donor agrees otherwise. Although the laws differ from state to state, the only way that the recipient(s) can discover the identity of the egg donor is with her permission or a court order from a judge.

Absolutely: Absolutley, at least for anonymous egg donors. Soemtimes an egg donor is known to the intended parents, but otherwise we go to great lengths to protect a donor anonymity.