Canon 801

1. Antecedent and perpetual impotence to have sexual intercourse, whether on the part of the man or of the woman, which is

either absolute or relative, of its very nature invalidates a

marriage. 2. If the impediment of impotence is doubtful,

either by reason of doubt of law or of a doubt of fact, the marriage is neither to be impeded nor is it to be declared null as

long as the doubt exists. 3. Sterility neither prohibits nor

invalidates marriage, with due regard for can. 821.