A Criminal Case, Preliminary Hearing, in Thailand, is the process where the alleged injured person, the Plaintiff, appoints a lawyer to prosecute the accused person, the Defendant. The judge will hold the Preliminary Hearing to decide whether or not to accept the case for further trial.
If the judge decides to accept the case, then there will be a further criminal trial.
On the other hand, if the judge does not accept the case, then the case will be dropped. However, the alleged injured person, the Plaintiff, can appeal to the Appeal Court.
In the new amendment of the law, during the Preliminary Hearing the accused person, the Defendant, has a right to plead to the judge concerning the case facts as well as the related rule of law. The previous law did not allow the Defendant to do so.