For patents with priority dates before the 2001 amendments, actual work in the relevant art in Australia must be established to rely on s 7(3) prior art information, and the relevant art should be identified by reference to the patent's actual invention (here, blending) rather than the broader field (here, synthesis of new compounds).
The full text is available to signed-in members, including the 9 later cases that cite this judgment.
3 of the 9 citing cases carry a classified treatment. How each court treated it is available to signed-in members.