Coach Conte is set to guide the Serie A giants to their third successive title, with his side leading second-placed Roma by eight points with five matches to play.
European success has eluded Conte in his reign at Juve so far, but that could change with the club set to face Benfica in this season's UEFA Europa League semi-finals.
Marotta told Sky Sport Italia: "Conte has already said (to us) that a renewal will be discuss (discussed) at the end of the season.
"We, as a club, are fully satisfied with the work of our coach. He has a contract with us, and is our leader.
"We are really proud to have Antonio with us.
"We have already spoken, and by mutual agreement we have agreed to meet after winning something special…whether that's the Scudetto or the Europa League…or both."
