In an interference proceeding, who wins if Mia conceives before Bruno but reduces to practice later?

In an interference proceeding, the determining factors for who prevails typically revolve around the concepts of conception and reduction to practice. In this scenario, Mia's earlier conception gives her a strong advantage in the contest.

Mia can be awarded priority as long as she can demonstrate that her conception occurred before Bruno's, and that she exercised diligence in reducing her invention to practice. Diligence refers to her continuous efforts to develop her idea into a working prototype or to complete the necessary steps to demonstrate its functionality. If Mia can show that she was diligent in this regard, she retains her priority claim despite delaying the actual reduction to practice.

In contrast, just being the later conceiver, as Bruno is, does not necessarily grant him any rights over Mia's earlier conception. The principle of "first to conceive" holds considerable weight in determining interference outcomes, placing Mia in a favorable position as long as she can prove her diligence.

Thus, Mia's earlier conception combined with evidence of her diligence allows her to win in this situation.