hello @lupafilotaxia,
I am not sure it would be best to let an AI defend us in court, the reason being that AIs use logical reasoning whereas humans often act based on emotions, an example of this would be a person who murders another person because they have terrorised them, I doubt that an AI could understand how difficult it is for a person to deal with mental or moral harm, that is why in these types of cases I do not think it is a good idea to let AIs be responsible for dispensing justice.