De væsentligste ændringer drejer sig om tre aspekter ved Kommissionens sagsbehandling - beregning af frister, materielle ændringer i forholdene omkring anmeldelsen og de implicerede parters ret til at blive hørt under sagens behandling.
The main changes made in the new Regulation relate to three aspects of the Commission's procedure — the calculation of deadlines, material changes in facts relating to notification, and the rights of the parties involved in merger cases to be heard in the course of the proceedings.