XIII. The one holy, catholic and apostolic Church of the seven Ecumenical Councils teaches that the supernatural incarnation of the only-begotten Son and Word of God, of the Holy Ghost and the Virgin Mary, is alone pure and immaculate; but the Papal Church scarcely forty years ago again made an innovation by laying down a novel dogma concerning the immaculate conception of the Mother of God and ever-Virgin Mary, which was unknown to the ancient Church (and strongly opposed at different times even by the more distinguished among the papal theologians). (Patriarchal Encyclical of 1895)
What we reject is the false teaching of original sin. You can only be guilty of a sin that you have committed.
The Catholic Church doesn't teach that.