City mayor Anne Hidalgo and former French president Francois Hollande attended the event, which took place in the mayor's office of the XIVth arrondissement.
Before Jugele's death earlier this year, he and his partner, Etienne Cardiles, were in an ongoing civil partnership. Beyond this, the late policeman was an active advocate for LGBTQ rights, including the right for same-sex couples to marry.
According to French law, posthumous marriages can take place if there are "significant grounds" for the union. A living spouse must first apply to the president of France for permission and provide proof of their "unequivocal" desire to wed.
In a powerful eulogy delivered at Jugele's funeral in April, Cardiles said his partner "lived like a star and left like a star," adding that he has no hatred for convicted gunman, Karim Cheurfi, who was shot dead by security forces on site.
"I have no hatred, Xavier, because it is not like you and does not fit with what made your heart beat nor what made you a guardian of the peace," Cardiles said.