Some principles
10 Directed OE has said that it is not uncommon for an interlocutory injunction to issue to prevent the termination of an ongoing relationship of the type existing in the present case. By way of example, Directed OE has pointed to the decision of Edelman J in Mineralogy Pty Ltd v Sino Iron Pty Ltd [No 2] [2013] WASC 375.
11 Directed OE has conceded that an injunction restraining the breach of a negative stipulation may have a similar effect to a mandatory injunction, but it has contended that the authorities show that this does not warrant any departure from the relevant balancing exercise. Further, it accepts that the court is to exercise a level of caution prior to granting an injunction if the effect may be akin to final relief; see for example Australian Rugby Union Ltd v Hospitality Group Pty Ltd [1999] FCA 1136 per Sackville J at [29] to [31]; Samsung Electronics Company Ltd v Apple Inc (2011) 217 FCR 238 per Dowsett, Foster and Yates JJ at [87]; Metro Investments Holdings Pty Ltd v GM Holden Ltd [2017] FCA 1523 per White J at [14].
12 Directed OE has pointed to a large number of cases in various fields and industries in which an applicant has obtained an interlocutory injunction in order to restrain the purported termination of a contract. I do not need to refer to them, save to note that it has relied upon Moonlighting International Pty Ltd v International Lighting Pty Ltd [2000] FCA 41 (Moonlighting (No 2)).
13 Contrastingly, the Hanhwa Korea Parties have contended that the injunction sought although negative in form is mandatory in substance. Moreover, they have contended that to grant the injunction sought would be tantamount to granting relevant final relief in relation to the Hanhwa Korea Notice.
14 In the context of the present dispute, it is appropriate to make the following brief observations in terms of questions of principle.
15 First, in relation to the test in Australian Broadcasting Corporation v O'Neill (2006) 227 CLR 57 at [65] to [72] per Gummow and Hayne JJ and the prima facie case limb, it is necessary to show a sufficient likelihood of success to justify the grant of the injunction, with such sufficiency being dependent upon the nature of the right being asserted and the practical consequences that are likely to flow if an injunction was granted. The prima facie case formulation commanded majority support in ABC v O'Neill. It was expressly referred to by Gummow and Hayne JJ, supported by Beecham Group Ltd v Bristol Laboratories Pty Ltd (1968) 118 CLR 618; further, Gleeson CJ and Crennan J agreed with the exposition of the principles set out by Gummow and Hayne JJ. Further, many decisions of this Court have used the prima facie case language. Contrastingly, the serious question to be tried formulation had its genesis with earlier authority where the bar might be perceived to have been set too low as a consequence of the use of such phraseology. Earlier authority did not colour such a formulation with the flexibility and nuance that is now expressly required.
16 Second, the relief sought by Directed OE in substance could be considered to have the effect of a mandatory injunction, that is, an obligation to continue to supply. But there is no separate test. The ABC v O'Neill test is equally applicable to mandatory injunctions in terms of the formulation of the test as distinct from its application in a particular case. The applicant for an injunction does not have to show anything additional, such as a "high degree of assurance". This has been discussed in earlier authorities, including by Gummow J in Businessworld Computers Pty Ltd v Australian Telecommunications Commission (1988) 82 ALR 499; [1988] FCA 206.
17 Sometimes, the approach in the context of mandatory injunctions has been to view the matter through the lens of taking the course that produces the lesser risk of injustice if it should turn out that the decision of the court is "wrong", in the sense of either granting an injunction where a party fails or would fail to establish its right at trial or failing to grant an injunction to a party who succeeds or would succeed at trial. It has been previously thought that, generally, a mandatory injunction will usually have the consequence of creating a greater risk of injustice if granted and the decision turns out to be "wrong", rather than if it were to be with-held.
18 Now several points. This lens is not, in form, how the second limb (balance of convenience) of the ABC v O'Neill test has been formulated, but some aspects of this lens are not mutually inconsistent with that second limb. Further, one cannot generalise in relation to mandatory injunctions in any event. But it may be that for a particular form of mandatory injunction in a particular case, if such a lens were to be used, that the strength of the prima facie case may be relevant to that lens; the stronger the prima facie case, the less the likelihood of being "wrong" if the injunction was to be granted. Now this is not a backdoor for some requirement for a "high degree of assurance" being necessary to be shown for mandatory injunctions in general, but rather suggests that the strength of the prima facie case should be in the mix in dealing with the balance of convenience at least. Moreover, even on the first limb, the strength of the probability required depends, in part, on the consequences likely to flow. If the consequences are more severe with respect to a particular mandatory injunction, then the probabilities required might rise.
19 Third, the balance of convenience looks at what the inconvenience, injury or injustice to Directed OE would be if the injunction were refused and seeks to weigh that against the inconvenience, injury or injustice to the Hanhwa Korea Parties if the injunction were granted. Only if the balance lies in favour of Directed OE, that is, if the inconvenience, injury or injustice to Directed OE if the injunction were refused outweighs the Hanhwa Korea Parties' prejudice, would an injunction be granted. It was submitted before me that I should assess the balance of convenience also in the context of considering the strength of the prima facie case: Samsung Electronics Co Limited Ltd v Apple Inc (2011) 217 FCR 238 at [67]. I agree that the stronger the prima facie case, then the less strong the balance has to weigh in favour of Directed OE (and, of course, vice versa). Putting it slightly differently, if the balance is more equally poised, but Directed OE has a strong prima facie case, then the interaction between the two limbs may tip the balance in favour of granting an injunction. Moreover, if mandatory orders are in substance sought, the relevance of the strength of the prima facie case may take on an additional dimension for the reasons previously discussed, but not in the previously discarded "high degree of assurance" threshold sense.
20 Let me now turn to the specific arguments.