The Ligue 1 giants were believed to be close to signing the Brazil international in January, but the move eventually fell through.
Nevertheless, the 22-year-old remains one of PSG's main transfer objectives.
Ancelotti told Rai Sport: "Pato was one of our targets in January, and remains one of our transfer targets for the future.
"It's true that he has been injured a lot, but I still consider him to be an extraordinary talent who can prove himself to everybody.
Pato has a contract with Milan until the summer of 2014, but the Rossoneri could opt to sell the attacker at the end of the season if a good offer comes in.
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