- By Netto & Magin LLC
- 5 Minutes Reading
How to Respond to a Patent Infringement Claim in Singapore
Receiving a patent infringement claim in Singapore can be serious for any business. The claim may come in the form of a cease and desist letter, a demand for compensation, or formal court proceedings. However, not every allegation of patent infringement is valid.
Before responding, it is important to assess whether the claim is supported by Singapore patent law, the patent claims, the technical facts, and the alleged infringing conduct.
Netto & Magin explains how to respond to a patent infringement claim in Singapore, how to assess the merits of the allegation, possible defence strategies, and what to expect if the dispute proceeds to litigation.
Key Takeaways :-
- Patent infringement in Singapore depends on whether the accused product or process falls within the claims of a registered patent.
- Do not ignore a cease and desist letter, but avoid admitting liability or signing undertakings before the claim is properly assessed.
- A proper response requires both technical analysis of the patent claims and factual investigation of the alleged infringing acts.
- A defendant may consider challenging the validity of the patent as part of its defence strategy.
- Where appropriate, a recipient of an unjustified threat may consider whether there is a basis for a groundless threats claim under Singapore law.
- If court proceedings begin, strict timelines apply, and early legal and technical preparation is critical.
What Is Patent Infringement in Singapore?
Patent infringement is made out when the acts complained of fall within the scope of the claims of a registered patent.
In simple terms, a patent owner may claim infringement where another party, without consent, is alleged to have engaged in acts such as:
- making a patented product
- using a patented product or process
- importing a patented product
- selling or offering to sell a patented product
- dealing with a patented process in a way that falls within the patent claim
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The starting point in any patent dispute is therefore the patent claim itself. The question is whether the accused product or process falls within the scope of that claim.
The First Step: Cease and Desist Letter
In many cases, a patent dispute begins with a cease and desist letter. This is often the first formal allegation made by the patent owner or its solicitors.
Typically, such a letter will:
- identify the patent or patents in issue
- allege infringement
- demand monetary compensation
- require a written undertaking to stop all allegedly infringing acts
- demand that the recipient cease making, using, importing, or dealing with the patented product or process
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A recipient should not ignore such a letter. At the same time, it is equally important not to make admissions or agree to undertakings before properly assessing the claim.
How to Assess a Patent Infringement Claim
When responding to a patent infringement allegation, it is critical to first determine whether the claim is meritorious. This assessment is usually carried out from two perspectives.
1. Technical merits
The first issue is whether the product or process of the alleged infringer actually falls within the scope of the patent claim.
This often requires a detailed technical analysis of the accused product or process against the wording of the patent claim. In some situations, technical testing or experimentation may also be necessary.
Key questions include:
- Does the accused product contain all the essential features of the claim?
Has the patent owner interpreted the claim too broadly? - Is there a meaningful technical distinction between the patent claim and the accused product or process?
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If the answer points against infringement, the allegation may fail on technical grounds.
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2. Factual merits
The second issue is whether the alleged infringer actually carried out the acts complained of.
This means examining whether the accused party has in fact:
- made the product
- used the process
- imported the product
sold or offered the product
done so without the patent owner’s consent
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Even if a patent claim appears broad, the allegation may still fail if the facts do not support the alleged infringing conduct.
What If the Patent Infringement Allegation Is Unmeritorious?
If the allegation is unmeritorious, whether on technical grounds, factual grounds, or both, the response should clearly say so.
A well drafted response should:
- deny infringement where appropriate
- briefly explain the basis of the denial
- reserve the recipient’s rights
- raise the possibility of a counterclaim for groundless threats of patent infringement, where applicable
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Taking a clear and informed position early can be important in shaping the direction of the dispute.
Defence Strategy: Should You Challenge the Patent’s Validity?
In some cases, the best defence strategy is not limited to denying infringement. It may also be worthwhile to consider whether the patent itself is valid.
A defendant may consider challenging the validity of the patent being asserted. This can be a powerful strategy, especially where there are grounds to argue that the patent should not have been granted in the first place.
A strong defence strategy depends on early clarity regarding:
- the technical merits of the infringement allegation
- the factual basis of the claim
- whether any statutory defences apply
- whether there are viable counterclaims, such as revocation of the patent or groundless threats
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Practical litigation issues are also important. These include:
- the scope of document disclosure
- the evidentiary burden involved in claim construction
- the selection of expert witnesses at an early stage
- the commercial value of defending or settling the dispute
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Ultimately, the goal is to reach a sound legal and commercial decision.
What Happens If a Patent Infringement Lawsuit Is Filed?
If a Statement of Claim for patent infringement is served, it is critical to pay close attention to the timelines. Missing a deadline can seriously affect the defence.
Below is a rough timeline of what to expect in a patent infringement lawsuit.
Rough Timeline of a Patent Infringement Lawsuit
| Stages | Action Required | Timelines |
|---|---|---|
| Commencement of Suit | Claimant files and serves the Originating Claim, Statement of Claim, and Particulars of Infringement. | Not applicable. This is the start of legal proceedings. |
| Appearance and Validity Notice (if applicable) | Defendant files Notice of Intention to Contest. Defendant may also file Notice of Intention to Put in Issue the Validity if challenging the patent. | Within 14 days of service of the Statement of Claim. |
| Defence, Counterclaim, Objection | Defendant files Defence, Counterclaim, and Particulars of Objection. | 42 days after service of the Statement of Claim, if validity is challenged. |
| Mediation | Parties consider mediation to attempt to resolve the dispute amicably or commercially. | After the close of pleadings, before preparations for trial begin. |
| Case Management, Evidence, Interlocutory Applications etc. | The court conducts case management conferences with the lawyers to prepare for trial. Lawyers work on discovery of documents, interlocutory applications, expert witnesses, affidavits of witnesses, and related matters. | This stage takes place in the lead up to trial. |
| Trial | The court hears the parties’ witnesses. | Witnesses are cross examined. Lawyers prepare Closing Submissions after the trial ends. |
| Decision | Judgment by the court. | Typically within 6 months after trial. The entire process usually takes between 18 to 24 months, if not longer. |
Why the Early Stages Matter
The early stages of a patent dispute often determine the strength of the defence later on. A potential defendant should focus on:
- understanding the patent claims
- preserving relevant documents and evidence
- identifying technical experts early
- reviewing the factual basis of the allegation
considering possible counterclaims - evaluating settlement and mediation options
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An early and informed response can improve both litigation strategy and commercial outcomes.
Practical Tips on How to Respond to a Patent Infringement Claim
If you have received a patent infringement claim, here are some practical steps to take:
- Do not ignore the letter or claim – Ignoring a patent allegation can lead to escalation and may weaken your position.
- Do not admit liability too early – Avoid making statements that could be treated as admissions before obtaining proper advice.
- Review the patent and the allegation carefully – A claim must be analysed against the actual wording of the patent claims, not merely against broad descriptions.
- Investigate the facts internally – Confirm whether your business has engaged in the acts alleged and gather the relevant technical and commercial records.
- Consider whether the patent can be challenged – A validity challenge may form part of a strong defence strategy.
- Seek legal and technical advice early – Patent disputes often involve complex technical issues that require expert input.
Frequently Asked Questions
You should review the allegation carefully, avoid making admissions, gather relevant documents, and obtain legal and technical advice as early as possible.
Yes, if the allegation is not supported by the technical facts, the actual conduct complained of, or both, you may deny the claim and explain the basis briefly.
Yes. In some cases, challenging the validity of the patent may be an important part of the defence strategy.
Typically, the overall process may take about 18 to 24 months, if not longer, depending on the complexity of the matter.
Netto & Magin LLC
Netto & Magin LLC is a boutique law firm in Singapore, boasting over 50 years of proven experience. Our specialized expertise covers Family Law, Syariah Law, Corporate Law, Employment Law, Fraud, and Commercial and Civil Litigation. With a dedicated team of industry-leading experts located strategically in Singapore's central business district, we stand ready to serve as your trusted legal partner.
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