Case Details
- Citation: [2024] SGCA 52
- Court: Court of Appeal of the Republic of Singapore
- Date: 2024-11-22
- Judges: Tay Yong Kwang JCA and Andrew Phang Boon Leong SJ
- Plaintiff/Applicant: TOWA Corp
- Defendant/Respondent: ASMPT Singapore Pte Ltd and another appeal
- Legal Areas: Damages — Assessment
- Statutes Referenced: None specified
- Cases Cited: [2024] SGCA 52, [2024] SGHC 163, [2023] 5 SLR 870, [2017] 5 SLR 175, [2016] 3 SLR 1308
- Judgment Length: 11 pages, 2,590 words
Summary
This case involves a dispute between TOWA Corp and ASMPT Singapore Pte Ltd over the assessment of damages for ASMPT's infringement of TOWA's patent. The Court of Appeal largely upheld the lower court's findings on the damages calculation, but agreed with ASMPT that certain "unclassified" costs should have been proportionally allocated to TOWA's lost profits. The court also addressed the parties' disagreements over the applicable pre-judgment interest period.
What Were the Facts of This Case?
TOWA Corp sued ASMPT Singapore Pte Ltd and its subsidiary for infringing TOWA's Singapore Patent No. 49740 relating to TOWA's "YPS" auto mould machines. ASMPT was found to have breached the patent through its acts of making, disposing of, offering to dispose of, keeping and offering the use of its "IDEALmold" machine.
TOWA elected to claim damages on 8 August 2018, and the damages assessment phase proceeded on that basis. In the initial damages assessment judgment, the lower court judge held that the damages should be calculated based on the profits TOWA could have made from its YPS machines in a hypothetical "but-for" scenario where there were no IDEALmold machines.
The parties disagreed on various aspects of the damages calculation, leading to a supplementary judgment from the lower court judge to clarify the parameters to be applied. Both TOWA and ASMPT then appealed different aspects of the damages awards to the Court of Appeal.
What Were the Key Legal Issues?
The key legal issues in this case were:
- Whether certain "unclassified" or "general additional costs of sales" should have been proportionally allocated to TOWA's lost profits from the YPS machines, as argued by ASMPT.
- The appropriate start and end dates for the pre-judgment interest to be awarded to TOWA.
How Did the Court Analyse the Issues?
On the first issue, the Court of Appeal agreed with ASMPT that the "unclassified" or "general additional costs of sales" should have been proportionally allocated to the YPS machines. The court reasoned that these were inherently unclassified costs that could not be directly attributed to any specific product line, and therefore should be allocated across TOWA's entire product range, including the YPS machines. The court found TOWA's expert's explanation for not allocating these costs to be unconvincing.
On the pre-judgment interest issue, the court analyzed the principles set out in the earlier case of Main-Line Corporate Holdings Ltd v United Overseas Bank. ASMPT argued that pre-judgment interest should run from the date of TOWA's election of remedy (8 August 2018), rather than the date of the writ (19 April 2013), and should end 14 days after ASMPT made a settlement offer that was more favorable than the final judgment. However, the court disagreed with ASMPT's arguments, finding that the purpose of pre-judgment interest is to compensate the successful plaintiff for being deprived of the use of the money, regardless of when the precise amount was known.
What Was the Outcome?
The Court of Appeal allowed ASMPT's appeal in part, finding that the "unclassified" or "general additional costs of sales" should have been proportionally allocated to the YPS machines when calculating TOWA's lost profits. The court dismissed TOWA's appeal in its entirety.
On the pre-judgment interest issue, the court rejected ASMPT's arguments and upheld the lower court's decision to award pre-judgment interest from the date of the writ until the date of the final judgment.
Why Does This Case Matter?
This case provides important guidance on the principles to be applied when assessing damages for patent infringement, particularly in relation to the treatment of unallocated or "general" costs. The court's reasoning on the need to proportionally allocate such costs, even if they cannot be directly attributed to the infringing products, sets a useful precedent.
The court's analysis of the pre-judgment interest issue also clarifies that the principles set out in the Main-Line case are not necessarily of universal application, and that the court retains broad discretion in determining the appropriate pre-judgment interest period based on the specific circumstances of each case.
Overall, this judgment offers valuable insights for intellectual property practitioners on the complex task of quantifying damages in patent infringement cases, and the factors the courts will consider in making such assessments.
Legislation Referenced
- None specified
Cases Cited
- [2024] SGCA 52
- [2024] SGHC 163
- [2023] 5 SLR 870
- [2017] 5 SLR 175
- [2016] 3 SLR 1308
Source Documents
This article analyses [2024] SGCA 52 for legal research and educational purposes. It does not constitute legal advice. Readers should consult the full judgment for the Court's complete reasoning.