The advocate is not allowed to assist the client in the following cases:
- the advocate participated as a judge, prosecutor, investigator, person conducting an inquiry, expert, specialist, translator, court session secretary, witness, attesting witness, arbitrator, patent attorney, mediator;
- the advocate participated in the conciliation procedure or mediation, and also if an official who takes or took part in the investigation or consideration of the case is a spouse, father, mother, son, daughter, brother or sister of the advocate;
- in a court considering a case as a court of first instance, a person who is in close kinship with the advocate works as a judge;
- the advocate is in close kinship with another advocate in the same case assisting a person with contradicting interests;
- the requirements of the person applied for legal assistance obviously contradict the law, or this person demands to accept evidence that is knowingly false or obtained in violation of the law, or to use other illegal means and methods;
- the advocate knows that the investigator, interrogator or the court can summon him/her as a witness in the case;
- circumstances requiring the advocate to divulge a secret entrusted to him/her by another person may arise, unless a written consent of the person interested in keeping the secret is obtained;
- acceptance of the obligation to assist may complicate the provision of legal assistance to another client;
- provision of legal assistance to the client can be so difficult that the advocate is not sure that he/she has sufficient knowledge and experience to properly perform it.