The authorities
42 It is trite that the dominant principle of copyright law is that protection is given, not for ideas, but only for the form of expression (Autodesk Inc v Dyason (No 2) (1993) 176 CLR 300 per Mason CJ at 303 citing Lord Hailsham of St Marylebone in LB (Plastics) Ltd v Swish Products Ltd [1979] RPC 551 at 629). Copyright cannot subsist in the idea of a house with an alfresco quadrant to the side of the back portion of the house. However, copyright can subsist in a plan that reflects that idea for a house. Whether it does or not will depend on whether the plan is an original artistic work within the meaning of s 32(1) of the Act. The plan will be an original artistic work in the statutory sense if it is recognisably the author's own work as opposed to a copy of another's work or a trivial variation on another's work (see Lahore J, Copyright and Designs (looseleaf, Butterworths, 1996) at [2110] citing University of London Press Ltd v University Tutorial Press Ltd [1916] 2 Ch 601 at 608-9).
43 In this case the Metricon Parties conceded that copyright subsists in the Copyright Works. They thereby conceded that the Copyright Works were original artistic works within the meaning of s 32(1) of the Act. Their reliance on evidence which tended to show that the arrangement of a rumpus, family, kitchen and meals room around a courtyard or patio to the side of a home was commonplace in the industry sits uncomfortably with this concession.
44 As the primary judge acknowledged, the proper approach to determining whether a part of a work is a "substantial part" within the meaning of s 14(1) of the Act is reflected in the observations of Mason CJ, in dissent, in Autodesk Inc v Dyason (No 2) at 305. The Chief Justice there said:
It is clear that the phrase 'substantial part' refers to the quality of what is taken rather than the quantity. In Ladbroke (Football) Ltd v William Hill (Football) Ltd, Lord Pearce stated:
'Whether a part is substantial must be decided by its quality rather than its quantity. The reproduction of a part which by itself has no originality will not normally be a substantial part of the copyright and therefore will not be protected. For that which would not attract copyright except by reason of its collocation will, when robbed of that collocation, not be a substantial part of the copyright and therefore the courts will not hold its reproduction to be an infringement. It is this, I think, which is meant by one or two judicial observations that "there is no copyright" in some unoriginal part of a whole that is copyright.'
As this statement makes clear, in determining whether the quality of what is taken makes it a 'substantial part' of the copyright work, it is important to inquire into the importance which the taken portion bears in relation to the work as a whole: is it an 'essential' or 'material' part of the work?
…in the context of copyright law, where emphasis is to be placed upon the 'originality' of the work's expression, the essential or material features of a work should be ascertained by considering the originality of the part allegedly taken. This is particularly important in the case of functional works, such as a computer program, or any works which do not attract protection as ends in themselves (eg, novels, films, dramatic works) but as means to an end (eg, compilations, tables, logos and devices).
45 We note, incidentally, that while neither a house plan nor a constructed house is exactly a "functional work" of the kind identified by the Chief Justice in the above passage from Autodesk Inc v Dyason (No 2), a project home is nearer in concept to a "functional work" than the types of work with which his Honour drew a contrast. That is, a project home is more of a 'functional work' than a novel, film or drama, which necessarily attracts copyright protection. We therefore conclude that in determining whether the quality of what is taken from a plan for a project home in which copyright subsists makes it a "substantial part" of the copyright work it is important to consider the originality of the part allegedly taken.
46 This is the approach adopted in Tamawood Ltd v Henley Arch Pty Ltd (2004) 61 IPR 378 where Wilcox and Lindgren JJ at [38] and [55] observed:
The application of the law of copyright to project home plans gives rise to special difficulty. All modern homes have certain features in common. In the case of project homes competing for the same number of dollars, there are pressures towards sameness….
Nor do we accept [the respondents'] submission that any part of a work which, considered in isolation, satisfies the low threshold of originality for the purpose of the subsistence of copyright, will necessarily constitute a substantial part of that work for the purpose of infringement. The reason is that it is not infringement of the part, but infringement of the whole that is in question. Whether there has been an infringement of the whole requires that the originality of the part be considered in relation to the work in suit as a whole. It must be determined whether the part is an 'essential or material' feature of the whole work, regarded as a copyright work, in the present case, as an artistic work. In our opinion, it must be asked whether the part or parts taken represent a substantial part of the labour, skill and judgment of the author that made the whole work 'original'. Factual questions of degrees of 'significance' or 'importance' of the part to the whole are involved. (emphases in original)