<P> The matter was sent to Justice Dixon who stated a case for the Full Court to consider . </P> <P> When the High Court assembled to hear the matter, the bar table was crowded with the leading names of the Sydney and Melbourne Bars . For the Commonwealth and other respondents: Garfield Barwick KC, Alan Taylor KC, Victor Windeyer KC, Stanley Lewis KC, Richard Ashburner, Bernard Riley, Murray McInerney, Cliff Menhennitt, George Lush and Bruce MacFarlan . The Communist Party and its officers and members were represented by Fred Paterson, Ted Laurie, Ted Hill and Max Julius . The unions were represented by various combinations of counsel: HV Evatt KC, Simon Isaacs KC, GTA Sullivan, Claude Weston KC, CM Collins and Maurice Ashkanasy KC . </P> <P> The case began argument on Tuesday, 14 November 1950 and continued through a total of 24 sitting days in Sydney concluding submissions on Tuesday, 19 December 1950 . The Court reserved its decision which was delivered in Melbourne on Friday, 9 March 1951 . </P> <P> Six of the Justices ruled that the Act was invalid, over the sole dissent of the Chief Justice John Latham . </P>

Who challenged the communist party dissolution bill in the high court