Relevant principles
7 The Court has a broad discretionary power to award costs pursuant to s 43(2) of the Federal Court of Australia Act 1976 (Cth) (Act). The discretion must be exercised judicially, not arbitrarily or capriciously, having regard to the relevant principles and the justice of the case in all the circumstances and cannot be exercised on grounds unconnected with the litigation: Summers v Repatriation Commission (No 2) [2015] FCAFC 64 (Summers) at [14] (Kenny, Murphy and Beach JJ), citing Trade Practices Commission v Nicholas Enterprises Pty Ltd and Others (No 3) (1979) 42 FLR 213; [1979] FCA 143 (at 219 (Fisher J); InterPharma Pty Ltd v Hospira, Inc (No 4) [2018] FCA 45 (InterPharma) at [8] (Kenny J).
8 In the ordinary course, in the absence of special circumstances justifying some other order, the general rule is that costs will be awarded to the successful party, that is, costs will follow the event: Summers at [14]; Ruddock and Others v Vadarlis and Others (No 2) (2001) 115 FCR 229; [2001] FCA 1865 (Ruddock) at [11] (Black CJ and French J); Vantage Holdings Pty Ltd v Huang (No 2) (2015) 232 FCR 556; [2015] FCA 185 (Vantage Holdings) at [12] (Collier J).
9 Rule 40.04(a) the Federal Court Rules 2011 (Cth) (FCR) provides that:
If no order for costs is made on an interlocutory application or hearing, the costs of the application or hearing:
(a) if an order is made in favour of any party - follow the event; or
(b) if no order is made in favour of any party - are taken to be costs in the cause of the successful party to the proceeding.
10 Costs orders in favour of parties that have succeeded in obtaining orders on an interlocutory basis, consistently with the default positon, are commonly made in circumstances where a party has succeeded on a discrete issue, such as the determination of a separate question in advance of a final hearing, although each case will turn on its particular facts and circumstances: Taylor (liquidator), in the matter of Heading Contractors Pty Ltd (in liq) v Heading (No 2) [2021] FCA 925 at [18] (Charlesworth J).
11 There is, however, a distinction between an interlocutory order that disposes of a separate question or a discrete issue in advance of a final hearing and, by way of example, an interim injunction that is obtained for the purpose of preserving the status quo pending a final determination of an applicant's cause of action. In the latter case, the Court has not conclusively determined any controversy between the parties, it has only made a preliminary assessment of the strength of an applicant's cause of action and had regard to the balance of convenience pending trial: Australian Securities and Investments Commission, in the matter of Whitebox Trading Pty Ltd v Whitebox Trading Pty Ltd (No 2) [2017] FCA 385 at [6] (Gleeson J).
12 An order that each party's costs be costs in the cause or that an applicant's costs be costs in the cause following the determination of an application for an interlocutory injunction has been described as the "usual order" and "a shorthand form of giving effect to the principles that govern the court's discretion … where there are no countervailing or different circumstances to warrant the exercise of the discretion in a different manner": His Eminence Metropolitan Petar, Diocesan Bishop of the Macedonian Orthodox Church of Australia and New Zealand & Anor v The Macedonian Orthodox Community Church St Petka Incorporated & Anor (No 2) [2007] NSWCA 142 (Metropolitan Petar) at [27] (Beazley, Giles and Hodgson JJA).
13 The following rationale for a costs in the cause order was advanced by the New South Wales Court of Appeal in Metropolitan Petar at [21]:
The rationale for making an order that costs be costs in the cause is that, at the stage of granting an interlocutory injunction, the court is not in a position to adjudicate on the ultimate outcome of the proceedings. Rather, provided there is a reasonable case to be tried, the Court's focus in deciding whether to grant the application for interlocutory relief is on other considerations and, in particular, on determining whether, on the balance of convenience, an injunction ought to be granted. Accordingly, if a plaintiff who applies for an interlocutory injunction is not ultimately successful in the proceedings, that plaintiff should not receive the costs of the application for an injunction which, when the matter is considered in overview cannot be sustained. However, as already explained, each case must depend upon its own facts.
14 I concluded in RB (Hygiene Home) Australia Pty Ltd v Henkel Australia Pty Ltd (No 2) [2021] FCA 1194 at [14], following a review of the authorities that I cited in that paragraph of my reasons, that the usual but not invariable practice is that in the absence of any specific disentitling conduct, the appropriate costs order where an applicant has been successful in obtaining an interlocutory injunction is that the applicant's costs be costs in the cause, rather than each party's costs in the cause.
15 In 3 Property Group 13 Pty Ltd (in liq) v 3 Property Group 17 Pty Ltd (No 2) [2021] FCA 1371 at [19], I concluded that the principles relevant to the award of costs following the grant of an interlocutory injunction are generally applicable to an award of costs following an unsuccessful challenge by a person to the continuation of a caveat pending a final determination of the claims advanced by the caveator, citing International Computer Network Pty Ltd v Lumos International Pty Ltd [2018] NSWSC 1793 at [94]-[96] (Ward CJ in Eq) and Stone Living Pty Ltd v 3 Property Group 9 Pty Ltd (No 2) [2020] ACTSC 357 (McWilliam AsJ) at [16]-[17] and [26].
16 Similarly, I am also satisfied that the principles relevant to the award of costs following the grant of an interlocutory injunction are generally applicable to an award of costs in circumstances where a significant matter of principle is raised in an interlocutory application but the Court, after receiving extensive written and oral submissions from the parties, concludes that it is not a suitable issue to be determined prior to the substantive hearing of the proceeding.
17 Absent disqualifying conduct, the successful party will generally obtain a costs order in its favour even where it has not succeeded on all issues: Smith v Starke, in the matter of Action Paintball Games Pty Ltd (in liq) (No 3) [2016] FCA 40 (Smith) at [10] (Gleeson J); Oshlack v Richmond River Council [1998] HCA 11; (1998) 193 CLR 72 at 97-8 (McHugh J) and 124 (Kirby J).
18 Where there are multiple issues in a case, the Court will generally not attempt to differentiate between the issues on which a party was successful and those on which it failed. It will ordinarily be appropriate to award the costs of the proceedings to the successful party without attempting to separate issues upon which a party was successful or unsuccessful: Elite Protective Personnel Pty Ltd & Anor v Salmon (No 2) [2007] NSWCA 373 at [6] (Beazley, McColl and Basten JJA); Firebird Global Master Fund II Ltd v Republic of Nauru (No 2) (2015) 327 ALR 192; [2015] HCA 35 at [5]-[6] (French CJ, Kiefel, Nettle and Gordon JJ); Accor Australia & New Zealand Hospitality Pty Ltd v Liv Pty Ltd (No 2) [2017] FCAFC 110.
19 A court should not too readily disallow costs simply because a party has failed upon an issue, unless it be "quite a separate and distinct issue from the issues in respect of which it succeeded", or unless there be some element of unreasonableness or inappropriate conduct in relation to that issue: Smith at [11] (Gleeson J), citing Dr Martens Australia Pty Ltd v Figgins Holdings Pty Ltd (No 2) [2000] FCA 602 at [54].
20 An approach of delving into the details on an issue by issue basis tends to distract from the principal task of determining an entitlement to costs based on the end result of the litigation: Moroccanoil Israel Ltd v Aldi Foods Pty Ltd (No 2) [2017] FCA 1393 at [64] (Katzmann J).