This article examines the theoretical and practical issues associated with the application of the doctrine of judicial notice (notorious facts) as grounds for exemption from proof in civil proceedings concerning the protection of honor and dignity of individuals and the business reputation of legal entities. It analyzes judicial practice and presents the author's conclusions regarding the correctness of recognizing specific facts as commonly known. In conclusion, the article emphasizes the significance of this issue, which lies in the potential use of the judicial notice doctrine in defamation cases. In a number of instances, this doctrine can serve as an effective instrument aimed at expediting the judicial process.