Section 18 of the Plant Breeder's Rights Act 1994 (Cth) (since repealed) applied to harvested material that was also propagating material, meaning that for grain varieties, the food exemption constituted a very significant derogation from PBR. The word 'enables' in s 18(1)(b) did not require a causal link between the act and the material becoming capable of use as food; it was sufficient that the act was followed by such use. Section 18 was an additional exception not contemplated by the 1991 UPOV Convention. Note that s 18 was repealed by the Plant Breeder's Rights Amendment Act 2002 (Cth), limiting the ongoing significance of this interpretation.
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