Summary: The diploma thesis deals with one of current subject matter in civil law, a problem of evidence used in the civil procedures. This issue is in the centre of civil procedure because we can resolve any case with fair decision only by clarifying the factual situation between litigants. The importance of this issue isn't just for civil procedure, but for every legal action as well. The basics of the legal regulation represent two main civil codes. First of all it is Act. No. 99/1963 Coll., Code of Civil Procedure, as amended, which regulates the most important part of all civil procedures, in Czech legal theory so-called "dispute civil procedure". The second Act. No. 292/2013 Coll, special civil procedure, regulates other civil procedu...