Streszczenie:
Benedict XIV decided that the Defender of the Bond has to be the compulsory participant of matrimonial nullity trials. Since that time, the Defender i san active participant during such trial and has to show the arguments for the validity of marriage. The article is dedicated to the position of the Defender of the Bond in the canonical matrimonial nullity trial after publishing the Pope Francis’s new motu proprio reforming the Canon Law in this matter. The study directs the reader’s attention to practical aspects of position of the Defender of the Bond.