Case Details
- Citation: [2009] SGHC 206
- Title: ASM Assembly Automation Ltd v Aurigin Technology Pte Ltd and Others
- Court: High Court of the Republic of Singapore
- Decision Date: 16 September 2009
- Case Number: Suit 163/2007
- Judge(s): Tan Lee Meng J
- Coram: Tan Lee Meng J
- Plaintiff/Applicant: ASM Assembly Automation Ltd
- Defendant/Respondent: Aurigin Technology Pte Ltd; Lim Ee Teoh; Tam Wing Wah
- Parties (as described): ASM Assembly Automation Ltd — Aurigin Technology Pte Ltd; Lim Ee Teoh; Tam Wing Wah
- Legal Area(s): Intellectual property (patent infringement, validity, and related remedies)
- Statutes Referenced: Patents Act (Cap 221, 2002 Rev Ed) (“the Act”) (including ss 29(1)(c), 29(5), 71(1))
- Cases Cited: Ng Kok Cheng v Chua Say Tiong [2001] 3 SLR 487
- Judgment Length: 21 pages, 9,663 words
- Counsel for Plaintiff: Dedar Singh Gill and Paul Teo (Drew & Napier LLC)
- Counsel for Defendants: Low Chai Chong, Lee Ai Ming and Alvin Lim (Rodyk & Davidson LLP)
Summary
ASM Assembly Automation Ltd (“ASM”) sued Aurigin Technology Pte Ltd (“Aurigin”) and its directors, Lim Ee Teoh and Tam Wing Wah, alleging infringement of ASM’s Singapore patent (Patent No 104354). The patent concerned an apparatus and method for automatically placing an array of solder balls onto a substrate, particularly ball-grid array (“BGA”) substrates used in semiconductor packaging. ASM sought declarations of validity and infringement, injunctive relief, and either an inquiry as to damages or an account of profits.
The defendants denied infringement and countered by seeking revocation of ASM’s patent on grounds of lack of novelty and inventiveness. They also relied on a statutory defence under s 71(1) of the Patents Act, asserting that they had made serious and effective preparations to manufacture and offer for sale the allegedly infringing AU800 machine before ASM’s patent priority date. In addition, Aurigin sought an injunction to restrain ASM from making threats of infringement proceedings and counterclaimed for groundless threats.
Although the provided extract is truncated, the judgment’s structure and the issues identified show a typical Singapore patent infringement framework: the court had to determine (i) whether ASM’s patent was valid, (ii) whether Aurigin’s AU800 fell within the relevant claims as construed, (iii) whether the defendants could rely on the “serious and effective preparations” defence under s 71(1), and (iv) whether ASM’s conduct amounted to impermissible threats warranting injunctive relief and damages. The court’s reasoning also addressed expert evidence admissibility and relevance, particularly distinguishing between a patent attorney and a person skilled in the art.
What Were the Facts of This Case?
ASM is a Hong Kong company manufacturing and selling semiconductor assembly and packaging equipment. It is the registered proprietor of Singapore Patent No 104354, granted on 30 December 2005. The priority date of the patent was 8 January 2002. The invention relates to an apparatus and method for automatically placing an array of solder balls onto a substrate, such as a BGA substrate. The patent was granted under s 29(1)(c) and s 29(5) of the Patents Act, relying on a corresponding US patent application (US Patent No 6,766,938B2). This background matters because it frames the patent’s technical content and the court’s approach to novelty/inventiveness and claim construction.
ASM alleged that Aurigin infringed ASM’s Singapore patent by manufacturing and selling its AU800 automated BGA solder ball placement machine. ASM further alleged that Aurigin’s directors, Lim Ee Teoh and Tam Wing Wah, directed, authorised, counselled, or procured Aurigin’s infringement. The AU800 was described as Aurigin’s flagship product and as an automated machine housing a key solder ball placement module based on its own patented design. The factual narrative indicates that the AU800’s solder ball placement module was itself patented in Singapore (Patent No 111523) on 30 April 2007, with a priority date of 14 October 2002, and also in the United States (Patent No 10/531,611) on 2 December 2008.
Crucially, the parties’ timelines overlapped. The first two sets of the AU800 were sold by Aurigin on 19 November 2003. This fact underpins the defendants’ reliance on s 71(1) of the Patents Act. ASM’s priority date was 8 January 2002; Aurigin’s sales in 2003 were after that priority date, but the defendants’ position was that they had made serious and effective preparations before the priority date. In patent litigation, such a defence can reduce or eliminate liability for infringement for the period and circumstances covered by the statutory language, even if the patent is otherwise valid.
ASM’s pleaded relief included (a) declarations that its Singapore patent was valid and that the AU800 infringed specified claims (claims 1–4, 6–7, and 11–12 of the amended patent), (b) an injunction restraining infringement, and (c) an inquiry as to damages or, alternatively, an account of profits. In response, Aurigin denied infringement and sought revocation of the patent for lack of novelty and inventiveness. The defendants also pleaded innocent infringement and asserted that ASM was not entitled to damages or account of profits prior to 6 December 2006. Additionally, Aurigin sought an injunction restraining ASM from threatening customers with legal proceedings and counterclaimed for groundless threats, seeking an inquiry as to damages suffered.
What Were the Key Legal Issues?
The first cluster of issues concerned validity and infringement. The court had to consider whether ASM’s patent was novel and inventive over the prior art and whether Aurigin’s AU800 infringed the relevant claims. In Singapore patent cases, this typically involves (i) construing the asserted claims, (ii) comparing the construed claims to the accused product, and (iii) addressing validity challenges such as lack of novelty and inventiveness.
The second cluster concerned statutory defences and the scope of remedies. The defendants expressly relied on s 71(1) of the Patents Act, which provides a defence where a person has made serious and effective preparations to manufacture and to offer to sell the relevant product before the priority date of the patent. This issue is legally significant because it can affect liability and/or the availability of damages and profits. The defendants also pleaded innocent infringement and argued that ASM should not receive damages or an account of profits prior to 6 December 2006.
The third cluster concerned “threats” and related injunctive relief. Aurigin sought an injunction restraining ASM from threatening customers with infringement proceedings and counterclaimed for groundless threats. This required the court to examine whether ASM’s communications constituted impermissible threats under the Patents Act framework and, if so, what remedies were appropriate.
How Did the Court Analyse the Issues?
A prominent feature of the judgment extract is the court’s approach to expert evidence. ASM called Assoc Prof Khong Poh Wah, an academic from NTU, as an expert on mechanical engineering aspects relevant to the invention. ASM also called Mr Robert Faber, a patent lawyer and partner at an American intellectual property firm that had prosecuted ASM’s US patent. However, Mr Faber admitted that he was not a person skilled in the art. The court relied on Ng Kok Cheng v Chua Say Tiong [2001] 3 SLR 487 to explain that a patent attorney called as an expert is not necessarily an expert for technical questions requiring the perspective of a person skilled in the art. The court therefore treated Mr Faber’s evidence as not relevant to issues that depended on technical understanding rather than legal prosecution history.
By contrast, Aurigin’s experts included Assoc Prof Tay Meng Leong (also from NTU) and Mr Dennis Miller, a former senior director and vice-president of Motorola Inc. Mr Miller had substantial experience as an inventor and innovator, held 11 patents, and had 5 relating to BGA technology. The court indicated that Mr Miller’s evidence was most useful. This reflects a common judicial emphasis in patent cases: the court values expert evidence that is grounded in technical expertise and relevant experience, particularly where claim construction and infringement analysis require understanding of how a person skilled in the art would interpret the technical features.
The court also provided a technical primer on BGA technology, drawing from Mr Miller’s affidavit. The primer explained that integrated circuit packages are mounted onto printed circuit boards using surface mount technologies, including BGA devices. It described the challenges created by smaller solder balls, including flux contamination, debris, oxidation, and damage. The court’s inclusion of this background serves a legal purpose: it contextualises the invention and helps the court evaluate whether the claimed apparatus and method addressed a technical problem in a way that could be considered novel and inventive. It also assists in determining whether the accused machine’s features correspond to the claimed features.
ASM’s patent claims were set out in detail (as amended during trial). Claim 1, for example, required an apparatus with a positioning member to direct solder balls to positions corresponding to the substrate array, a movable container supplying solder balls to the positioning member, and a tilting mechanism that applies a force to the solder balls in the direction of movement of the container, including a tilting mechanism adapted to rotate the container about an axis perpendicular to the direction of motion. Claims 2–4 added features such as repeated rotation/spreading, controllable rotational angles and speeds, and a positioning rail and motor. Claims 5–11 introduced additional functional elements such as vibration generation, ball templates with apertures slightly larger than solder balls, pick-and-place placement while retaining positions, simultaneous rotation of container/template/substrate, through-holes for direct falling onto the substrate, a separator cap to control passage onto the substrate, and a closed container to reduce oxidation. This claim structure indicates that infringement analysis would require careful mapping of each technical element of the AU800 to each claimed feature.
Although the extract truncates before the court’s final determinations, the issues identified in the pleadings and the court’s evidential approach suggest the following analytical pathway. First, the court would construe the asserted claims, likely focusing on the technical meaning of the tilting mechanism, container movement, template apertures, and any mechanisms controlling solder ball oxidation and separation. Second, the court would compare those features to the AU800’s solder ball placement module design. Third, for validity, the court would assess whether the prior art disclosed the claimed combination and whether the claimed solution involved an inventive step rather than being an obvious aggregation of known features. Fourth, if infringement were established, the court would then consider whether Aurigin could rely on s 71(1) based on evidence of serious and effective preparations before the priority date, and whether any “innocent infringement” or timing arguments affected damages or profits.
What Was the Outcome?
The provided extract does not include the court’s final orders, so the precise outcome (including whether ASM’s patent was upheld, whether infringement was found, and the extent of any injunction or damages/account of profits) cannot be stated with certainty from the truncated text. However, the judgment clearly addresses multiple pleaded heads of relief and defence: validity (novelty/inventiveness), infringement of specified claims, the s 71(1) defence, innocent infringement and the timing of damages/profits, and the threats counterclaim.
For a complete assessment, a researcher would need the remainder of the judgment to identify the court’s findings on each claim element and the ultimate disposition of ASM’s infringement claim, Aurigin’s revocation counterclaim, and Aurigin’s threats-related injunction and damages inquiry. The extract nonetheless provides sufficient detail to understand the legal framework the court applied and the evidential and technical issues that would have driven the final result.
Why Does This Case Matter?
This case is instructive for practitioners because it illustrates how Singapore courts handle patent disputes that turn on both technical claim features and procedural/evidential questions. The court’s treatment of expert evidence—particularly its reliance on Ng Kok Cheng v Chua Say Tiong to exclude or discount the relevance of a patent attorney’s evidence on technical matters—reinforces that patent litigation is not merely legal argument. It is also an exercise in technical comparison, requiring expert testimony from persons who can speak to the perspective of the person skilled in the art.
Substantively, the case is also relevant to the operation of s 71(1) of the Patents Act. Where a defendant can show serious and effective preparations to manufacture and offer for sale before the priority date, the statutory defence can materially affect liability and remedies. This makes the case valuable for counsel advising on pre-filing conduct, documentation of development timelines, and the evidential burden of proving “serious and effective preparations.”
Finally, the threats component underscores that patent enforcement in Singapore is constrained by statutory limits on threatening communications. The court’s engagement with an injunction to restrain threats and a counterclaim for groundless threats highlights that patentees must carefully manage how they assert rights against customers and third parties. For law students and practitioners, the case therefore provides a multi-dimensional view of patent litigation: validity, infringement, statutory defences, remedies, and threats.
Legislation Referenced
- Patents Act (Cap 221, 2002 Rev Ed), s 29(1)(c)
- Patents Act (Cap 221, 2002 Rev Ed), s 29(5)
- Patents Act (Cap 221, 2002 Rev Ed), s 71(1)
Cases Cited
- Ng Kok Cheng v Chua Say Tiong [2001] 3 SLR 487
Source Documents
This article analyses [2009] SGHC 206 for legal research and educational purposes. It does not constitute legal advice. Readers should consult the full judgment for the Court's complete reasoning.