San Siro was packed out to see the Brazilian talent open his account in a trident attack with fellow Selecao stars Kaka and Ronaldo.
"The team played very well and it was an excellent game of football. Ronaldo remains the Fenomeno. I am just very happy to have scored.
"Ronie was always my hero growing up and it is a dream to play in the same team as him."
Pato added: "How many goals can I score? I'll sleep on it and then I'll tell you."