Bosses at ABC stunned the stars and fans of the show in January last year (10) by announcing the programme's fourth season would be its last.
Several of the cast members went public with their disappointment about the cancellation ahead of the final episode, which aired in America in April (10).
Mabius, who played magazine boss Daniel Meade, has now opened up about the axing of the show, revealing the stars of the programme felt "battered about" by network chiefs and were devastated by the snub.
He tells Britain's The Sun, "Our show ended too early. We were battered about by ABC and even if the fans wanted another series they couldn't have got it because we had been raked over the coals so much by the network.
"We put our best feet forward and felt neglected. Everyone was upset with them for cancelling Ugly Betty."
However, Mabius is hopeful of a big screen follow-up to the popular series, so fans can see a happy ending for his character and former assistant Betty Suarez, played by America Ferrera.
He adds, "There may still be a romantic conclusion for Daniel and Betty. The fans want a film and hopefully that will happen if enough people ask for it.
"Sex and the City was put under a lot of scrutiny when it became a film but certainly didn't suffer in the box office."