Costs
16 The appellant accepted that it is common in patent amendment applications for the patentee to be ordered to pay the respondent's costs irrespective of the outcome, but this is not a rule as costs are always in the Court's discretion: Eli Lilly and Company v Pfizer Research and Development Company NV/SA [2003] FCA 988; (2003) 59 IPR 234 at [25]. The appellant submitted that having regard to the restrictive and limited nature of the amendments to claims 1 to 20, it was unreasonable for the respondent to incur any costs formulating grounds of opposition against those amendments. As to amended claims 21 to 24 the appellant did not press for those claims and there has been no hearing on the merits so that the appropriate order is for each party to pay its own costs: Re Minister for Immigration and Ethnic Affairs of the Commonwealth of Australia; Ex parte Lai Qin [1997] HCA 6; (1997) 186 CLR 622 at 624-625. Alternatively, any order to pay the respondent's costs should be limited to those reasonably and properly incurred in relation to the interlocutory application.
17 The respondent submitted that the appellant should pay the respondent's reasonable costs of and incidental to the amendment application and any costs thrown away if the amendment application is successful. The respondent pointed out that the proceeding was commenced by the filing of a notice of appeal on 30 May 2019 against the decision of the Commissioner of Patents that each of claims 1 to 15 lacked an inventive step. On 21 June 2019 the respondent filed a notice of contention in which it contended that the decision of the Commissioner of Patents was correct for the reasons given and for additional reasons. On 28 June 2019 the appellant filed an interlocutory application to amend the 752 application by proposing new claims 1 to 24. On 5 September 2019 the respondent filed a statement of grounds and particulars of opposition to the proposed amendments. Ground 1 opposed certain of the proposed claims on the basis of non-compliance with s 102(2) of the Patents Act. Ground 2 opposed the amendments for discretionary reasons, including the paucity of disclosure in the accompanying affidavit about the reasons for the proposed amendments. The appellant then filed further affidavit material providing additional reasons for and background to the proposed amendments. This further material also indicated that the appellant would not press for the amendments to introduce claims 21 to 24. On 28 November 2019 the respondent indicated that it did not intend to file any evidence. On 6 December 2019 the respondent indicated it no longer opposed the proposed amendments, but would seek an order that the appellant pay its costs of and incidental to the application.
18 The respondent relied on Cytec at [49] in which Burley J said:
Section 105(2) of the Patents Act provides that an order under s 105(1A) may be made subject to such terms (if any) as to costs, advertisements or otherwise as the court thinks fit. That provision is in addition to the general discretion that the Court has to award costs in proceedings before it: see Idenix Pharmaceuticals LLC v Gilead Sciences Pty Ltd (No 2) [2018] FCAFC 7 (Nicholas, Beach and Burley JJ) at [5] - [6]. In the present case Nalco chose to file and pursue its amendment application following the commencement of these proceedings. By taking this course it was seeking an indulgence in the form of the exercise of discretion in its favour. Cytec has a very real interest in the amendment application, the outcome of which will affect the scope of the appeal from the opposition. No doubt for good reason, Cytec formed the view that it should not oppose the grant of the leave sought, but that is not to say that its interest in the amendment ceased upon making that decision. During the course of the application evidence may have been lead that was contrary to its interests or the application may have been varied in a manner adverse to its interests. It was entitled to consider the relevant evidence and attend the hearing.
19 According to the respondent, the facts of the present case provide a stronger example in support of a costs order, as the respondent incurred additional costs by initially opposing the application to amend before the appellant indicated it no longer pressed proposed claims 1 to 24 and provided further explanation of the amendments. The respondent also sought an order that the appellant pay its costs thrown away if the amendment application is successful which would include, for example, the issues raised, but which no longer need to be pursued given the amendments.
20 I accept the respondent's submissions. It formulated its opposition to the proposed amendments before the appellant refined those amendments and provided additional material explaining them. It subsequently withdrew its opposition. The appellant's submission that the amendments to claims 1 to 20, were so confined that it was unreasonable for the respondent to incur any costs formulating grounds of opposition against those amendments, overlooks the proper interest which the respondent has in the amendments and the fact that the appellant supplemented the information on which it relied to support the amendments after the respondent had lodged its opposition. The respondent should have the benefit of the costs orders it has sought.
I certify that the preceding twenty (20) numbered paragraphs are a true copy of the Reasons for Judgment herein of the Honourable Justice Jagot.