Monitor Prawniczy no. 7/2019 An expert witness in the draft provisions on evidence in simplified proceedings Joanna Derlatka 10.32027/MOP.19.7.1 Amended Art. 39 of the Civil Code and cases of infringement of the principles of joint representation of corporate entities Michał Wojewoda 10.32027/MOP.19.7.2 Responsibility for maintenance and repair of balconies in a homeowner’s association – notes to the case law of the Supreme Court Bernard Łukańko 10.32027/MOP.19.7.3 Clauses setting forth main performances of the parties (Art. 3851 § 1 of the Civil Code) and a unit-linked insurance contract Mateusz Grochowski Method of serving a certified copy of a pleading which extends the cause of action Marcin Dziurda 10.32027/MOP.19.7.5 Cumulation of a contractual penalty for delay with a contractual penalty for withdrawal Radosław Strugała 10.32027/MOP.19.7.6 Consumer’s right to withdraw from a contract concluded at a trade fair Katarzyna Wiese