The bomber wants to do well for the Rossoneri, so that he can secure his spot in the Selecao...
Pato was bitter that former Selecao coach Dunga did not select him in the 23-team squad to go to South Africa for the World Cup, and wants to cement his spot in the side.
"I have never agreed with the choices [Dunga] made whilst national team coach," the 20-year-old told O'Globo. "He had his reasons for making those choices, and I respect that.
"But now I am pleased that I have been given a chance to play for Brazil again.
"I already know that everyone on the national team can be taken out of the side - no one is untouchable. That is why I want to demonstrate my worth to the Selecao with my performances for Milan.
"The Rossoneri are a club I will fight until the end," Pato added.
The Diavoli take on Juventus in the Trofeo Berlusconi this weekend.