Abstract
Expertise is the study and solution of a professional issue or the expression of an opinion on it by an expert. In procedural law, expertise means examination of materials to establish factual information. Expert examination is performed by an expert and the research results are formalised in an expert report. Circumstances established in the course of expert examination, which have been fixed in accordance with the procedure prescribed by procedural law, are the evidence in the preliminary investigation and in court resolution procedures.