Copyright in UK Law

My Lords, I accept that a defendant who procures a breach of copyright is liable jointly and severally with the infringer for the damages suffered by the plaintiff as a result of the infringement. The defendant is a joint infringer; he intends and procures and shares a common design that infringement shall take place. A defendant may procure an infringement by inducement, incitement or persuasion.

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.

I have pointed out earlier in this judgment that the basis of the defence of public interest in a breach of confidence action cannot be the same as the basis of such defence to an action for infringement of copyright. In an action for breach of confidence the foundation of the action can fall away if that is required in the public interest, but that can never happen in a copyright action.

And there are numerous authorities which show that the "part" which is regarded as substantial can be a feature or combination of features of the work, abstracted from it rather than forming a discrete part. That is what the judge found to have been copied in this case. Or to take another example, the original elements in the plot of a play or novel may be a substantial part, so that copyright may be infringed by a work which does not reproduce a single sentence of the original.

It is on this ground that, for example, a literary work which describes a system or invention does not entitle the author to claim protection for his system or invention as such. The other proposition is that certain ideas expressed by a copyright work may not be protected because, although they are ideas of a literary, dramatic or artistic nature, they are not original, or so commonplace as not to form a substantial part of the work.

The purpose of the examination is not to see whether the overall appearance of the two designs is similar, but to judge whether the particular similarities relied on are sufficiently close, numerous or extensive to be more likely to be the result of copying than of coincidence. It is at this stage that similarities may be disregarded because they are commonplace, unoriginal, or consist of general ideas.

There can be no copyright in a mere idea, so if all that the respondents had done was to take from the appellants the idea of external latching, or the "unhanding" of components, or any other idea implicit in their work, the appellants could not complain. That copying has taken place, is for the plaintiff to establish and prove as a matter of fact. The beginning of the necessary proof normally lies in the establishment of similarity combined with proof of access to the plaintiffs' productions.