The text presents selected issues concerning parties’ obligatory professional representation in Polish cassation proceedings. It depicts the present regulation against a historical and comparative background. As its shape kept evolving over the years, its premises have been regularly revisited in the course of a doctrinal discussion. In recent times especially one question came to prominence. It touches upon an idea to introduce a special group of legal representatives who would be endowed with an exclusive right to act in the proceedings before the Supreme Court. The text recreates historical background of this institution in the Polish law and juxtaposes it with the present state, taking into account the nature of cassation proceedings, as well as the prospects of introducing such a legal specialisation in the future.