 Initially the party with the headquarter in Kuala Lumpur had been tried to be registered with the acronym IMAM but was disapproved by Registrar of Societies (ROS) and finally the IKATAN acronym was used.The constitution of IKATAN was amended to change the name of the party to the National Justice Party () (KeADILan) and relaunched on 4 April 1999 during the Reformasi movement.It was subsequently renamed again as People's Justice Party () (PKR) after the merger with Malaysian People's Party () (PRM) on 3 August 2003.