What are the litigation rights of defense lawyers in criminal cases, and how are the criminal procedures stipulated?

Defense lawyers enjoy many litigation rights in the process of criminal proceedings, and the more important rights include: (1) the right to investigate and collect evidence. Defense lawyers can not only collect evidence from relevant units and individuals, but also investigate and collect evidence from victims and their families. (2) the right to meet. Defense lawyers have the right to meet with criminal suspects and defendants in custody and to correspond with them. (3) the right to read papers. (4) the right to appear in court. (5) When the rights of criminal suspects and defendants are infringed, they have the right to lodge complaints and charges, and so on.