The publication concerns normative provisions regarding the advertising of medical devices. Prima facie, it may seem that the entry into force of regulations regulating the principles of advertising medical devices means transparency of action in this area, however, a detailed analysis of the provisions of the Medical Devices Act leads to the conclusion that the legislative area contains certain gaps that may result in sanctioning certain behaviours of entities conducting advertising of medical devices as inconsistent with the applicable regulations. Taking into account the new legal conditions, an analysis of individual legal regulations relating to the principles of conducting advertising of medical devices was made. Due to the short period of validity of the indicated regulations, the purpose of the publication will be to determine the directions of interpretation of individual provisions relating to advertising of medical devices using a systemic interpretation. The legal analysis is accompanied by the hypothesis that the regulations regarding the advertising of medical devices are in many cases undefined and consist of provisions containing vague concepts. The work uses the dogmatic and legal method.

The publication refers to the content of PPAs (Power Purchase Agreements), which are concluded by participants of the electricity market from renewable sources. It is important that the parties to the PPA are not limited by public law regulations in the scope of exercising the civil law freedom of contract. In the area of the principle of freedom of contract, parties concluding a PPA contract may therefore exclude the application of the rebus sic stantibus clause. Therefore, the aim of the publication will be to answer the question of what importance is attached to the rebus sic stantibus clause in the area of concluding PPAs and whether the parties to such an agreement should exclude its application.