The PaVeS-group is very happy to announce the acceptance of the paper “Parameterized Analysis of Immediate Observation Petri Nets” at Petri Nets’19. The main contribution of the paper is to prove PSPACE-completeness for the parameterized reachability, coverability and liveness property in Immediate Observation Petri Nets a certain class of Petri Nets that is important to Immediate Observation Population Protocols.