Patent Infringement In New Zealand: What Businesses Should Know

If you’re building a product, scaling a tech idea, importing stock, or even just rebranding an existing offering, intellectual property can sneak up on you. One day you’re focused on sales and growth, and the next you’ve received an email claiming you’re infringing someone’s patent.

Patent disputes can feel intimidating (and expensive) - especially for small businesses. The good news is that issues involving patent infringement in New Zealand are often manageable when you understand the basics, take some practical precautions, and get legal advice early.

In this guide, we’ll walk through what patent infringement can mean in a business context, what the risks are, and what you can do to protect your business from day one.

What Is A Patent (And Why Does It Matter For Small Businesses)?

A patent is a type of intellectual property right that can give the patent owner the exclusive right to exploit an invention for a limited period of time in a particular country (including New Zealand), provided the patent is granted and remains in force.

In practical terms, if someone has a valid NZ patent for an invention, they may be able to stop others from doing certain things with that invention without permission - like making it, selling it, using it, or importing it.

This matters for small businesses because patent issues don’t just affect big manufacturers. You can run into problems if you:

• develop a product that’s similar to something already patented in New Zealand
• source products from overseas and import them into New Zealand
• use a patented method or process in your operations (even if you didn’t realise it was patented)
• partner with a supplier or contractor who “borrows” a design or process without proper clearance

Patents can apply to a range of innovations - including products, systems, and methods - as long as they meet the legal requirements (like novelty and inventiveness). If you’re still working out what can or can’t be patented, it can help to start with what can be patented so you’re clear on what patent rights can cover.

One key point: patents are territorial. A patent registered overseas doesn’t automatically give protection in New Zealand. But if a patent is registered in New Zealand, activities in New Zealand can infringe it - even if you designed the product elsewhere.

What Counts As Patent Infringement In New Zealand?

In New Zealand, patent law is primarily governed by the Patents Act 2013. Whether something is infringement depends on the scope of the patent claims (in other words, the legal boundaries of what the patent protects) and what your business is doing. Ultimately, infringement (and any defences) are questions that may need to be determined by a court if the parties can’t resolve the issue.

Generally, patent infringement in New Zealand may involve doing certain acts in relation to a patented invention without permission, unless an exception applies.

Common Business Activities That Can Trigger Infringement

Depending on the type of patent (product or process), infringement risk can arise when a business:

• makes a product that falls within the patent claims
• uses a patented product (or a patented process/method)
• sells or offers to sell a patented product
• imports a patented product into New Zealand
• keeps a patented product for sale

For process patents, the risk often comes from using a protected method in your business (for example, a manufacturing process, a testing method, or a technical workflow), or selling products that are made using a patented process.

It’s Not Always Obvious

Patent infringement claims can be complex because it’s not just about whether your product “looks similar”. Two products can look different but still infringe if they operate in a way that falls within the patent claims. On the other hand, products that look similar might not infringe if they work differently in a legally meaningful way.

This is why patent disputes often turn on technical detail and careful interpretation - and why getting advice early can save a lot of cost and stress later.

How Do You Know If You’re Infringing A Patent?

For many small businesses, the tricky part is that you may not know you’re infringing until someone contacts you - or until you’re about to raise investment, sell your business, or enter a major supply agreement and a due diligence process starts asking hard questions.

Here are practical ways businesses usually identify (or reduce) patent infringement risks in New Zealand.

1. Do A “Freedom To Operate” Check Before You Launch

A “freedom to operate” (FTO) check is basically a risk assessment: are there any patents in force in New Zealand that your product or process might fall within?

This often includes searching relevant patent databases and reviewing any “close matches” in detail. It’s particularly important if you’re:

• launching a new physical product
• importing or distributing a product manufactured overseas
• scaling a proprietary process (especially in health, agri, engineering, or consumer product spaces)

An FTO check doesn’t guarantee there’s no risk - but it puts you in a much stronger position to make informed decisions and avoid surprises.

2. Check What You’ve Built Versus What A Patent Actually Claims

Patents contain technical descriptions, but infringement usually turns on the claims. Claims define the “legal fence” around the invention.

Two important questions are:

• Does the patent appear to be valid and in force in New Zealand? (Patents expire, can lapse for non-payment, or be challenged.)
• Does your product/process fall within one or more claims? This is often where a lawyer and technical expert can help.

3. Don’t Forget Your Supply Chain

If you source goods from a manufacturer or wholesaler, you can still face problems in New Zealand if the goods infringe an NZ patent.

That’s why strong supply terms matter - including warranties from suppliers, indemnities where appropriate, and clear obligations around IP compliance. If you’re relying on a handshake deal or a short email chain, it may be worth putting a proper Supply Agreement in place so you’re not left holding the risk.

4. Watch Out For “IP Creep” In Collaborations

Patent disputes can also arise when collaborators disagree about who created what - especially if you’re working with contractors, engineers, or developers and ownership wasn’t clearly documented.

It’s common for startups to assume they automatically own what they paid for, but ownership can be complicated without the right contract terms. In many cases, you’ll want an IP Assignment (or clear IP clauses in your contractor agreement) so your business actually owns what it’s building.

What Happens If You’re Accused Of Patent Infringement In New Zealand?

Getting a cease-and-desist letter (or even an informal “we think you’re infringing” email) can be stressful. But don’t panic - and don’t ignore it.

How you respond early can have a big impact on the outcome, including whether the dispute escalates.

Step 1: Don’t Admit Liability (And Don’t Fire Off A Quick Reply)

It’s tempting to respond immediately to “clear things up”, especially if you believe you’ve done nothing wrong. But casual replies can accidentally include admissions or statements that later become problematic.

A safer approach is to acknowledge receipt and say you’re taking advice.

Step 2: Get The Right Info On The Patent And The Allegation

Before you can assess risk, you’ll want to clarify:

• the patent number and what is actually registered in New Zealand
• whether the patent is still in force
• which claims they say you infringe
• which products/services and dates they’re referring to
• what outcome they want (stop selling, pay a licence fee, compensation, delivery up of stock, etc.)

Step 3: Consider Commercial Options Early

Not every claim ends up in court. Depending on the facts, options may include:

• designing around the patent (modifying the product/process to avoid the claims)
• negotiating a licence (paying to use the patented invention lawfully)
• challenging the claim (for example, disputing infringement or raising concerns about validity)
• settling on commercial terms to keep trading with certainty

It’s also common to want confidentiality around discussions, particularly if you’re negotiating sensitive commercial terms. A tailored Non-Disclosure Agreement can help protect your business information during negotiations.

Step 4: Understand The Potential Consequences

If a patent owner takes formal action and succeeds, potential remedies can include (depending on the case):

• an injunction (a court order to stop the infringing activity)
• damages or an account of profits
• orders relating to infringing goods (for example, delivery up or destruction)
• legal costs (in some circumstances)

The details depend on the situation, and you should get tailored advice on your specific facts - but the key takeaway is that patent infringement claims can affect your ability to keep selling, importing, or scaling.

What If Someone Is Infringing Your Patent?

If you’ve invested time and money into protecting an invention, it’s frustrating to see competitors copy it. If you suspect someone is infringing your patent in New Zealand, the goal is to act strategically - not emotionally.

1. Confirm Your Rights First

Start by confirming:

• your patent is granted (not just filed) and in force in New Zealand
• the potentially infringing product/process actually falls within the patent claims
• you can gather evidence of the conduct (advertising, import records, product samples, screenshots, etc.)

2. Consider A Graduated Response

In many cases, a stepped approach works best. That might include:

• a carefully drafted initial letter raising the issue
• commercial discussions (licensing can be a real win-win)
• a formal cease-and-desist
• court action if needed

Where your IP strategy includes other rights (like branding), it’s also worth remembering that patent issues can overlap with other IP disputes. For example, brand confusion is typically handled under trade mark law - and if that’s relevant to your situation, trade mark infringement is a separate (but commonly connected) risk area.

3. Think About Your Broader IP Protection

Patents are powerful, but they’re rarely the only legal tool you’ll rely on. Depending on what you’re selling, you may also want to protect:

• your brand name and logo (trade marks)
• your original content (copyright)
• your confidential know-how (trade secrets)
• your commercial relationships (strong contracts)

If you’re building a long-term business, having multiple layers of protection usually gives you more leverage and reduces risk.

How To Reduce Patent Infringement Risk From Day One

If you want to avoid the most common IP headaches, the best time to deal with them is before you’ve invested heavily in stock, marketing, and manufacturing. Here are practical steps you can implement early - even if you’re operating lean.

1. Build IP Checks Into Product Development

If you’re iterating quickly (especially in hardware, consumer goods, medtech, or manufacturing), make IP checks a regular milestone rather than a one-off task. That can include:

• checking competitor patent activity before committing to a final design
• documenting your R&D process (helpful if ownership is later disputed)
• considering whether you should file a patent application

2. Get Ownership Clear With Founders, Contractors, And Partners

Ownership disputes can be just as damaging as infringement disputes. Imagine you launch successfully, start raising capital, and then discover a contractor believes they own key parts of your invention. That can derail investment or a sale fast.

At a minimum, make sure your contracts clearly cover:

• who owns new IP created during the engagement
• who owns pre-existing IP brought into the project
• what each party can do with the IP after the relationship ends

Where your structure involves multiple founders or shareholders, it’s also smart to clarify decision-making and IP handling at the governance level. A well-drafted Shareholders Agreement can help set expectations early - especially around contributions, exits, and IP ownership.

3. Use The Right Entity And Contracts To Manage Risk

Patent risk is a legal risk, but it’s also a commercial risk. How you structure your business and contracts can affect how exposed you are.

For example, running through a company can help separate business liabilities from personal assets (depending on your circumstances). If you’re setting up or restructuring, a Company Set Up is often a sensible step for founders who want to build and scale.

And wherever your business relies on suppliers, manufacturers, or distributors, make sure your agreements allocate IP risk properly (including warranties and indemnities where appropriate).

4. Keep Your Confidential Information Confidential

Not everything should be patented. Sometimes the better move is keeping an innovation as a trade secret - but that only works if you treat it as confidential in practice.

That means limiting access internally, using confidentiality clauses in contracts, and using NDAs when discussing sensitive ideas with third parties. (If you don’t take steps to protect secrecy, it’s much harder to argue something was confidential later.)

5. Get Advice Before A Dispute Becomes A Deadline

Many businesses only seek help after they’ve received a letter with a short response deadline, or when a key customer asks them to “confirm no IP infringement”. At that point, you’re making decisions under pressure.

Getting advice earlier can give you more options - including small design changes that avoid a major issue, or better contract terms that shift risk back to the supplier who created it.

If you need support on strategy, risk, or contracts around innovation and ownership, working with an Intellectual Property Lawyer can help you protect what you’re building while reducing the risk of disputes down the track.

Key Takeaways

• Patent infringement in New Zealand can arise from making, using, selling, offering for sale, or importing products (or using processes) that fall within the claims of an NZ patent (subject to any applicable exceptions or defences).
• Patent issues don’t just affect large companies - importers, retailers, startups, and service businesses can all face infringement risk depending on what they sell or how they operate.
• The scope of a patent is defined by its claims, so “it looks different” isn’t always enough to avoid infringement.
• If you’re accused of infringement, don’t ignore it and don’t rush to respond - get advice early so you can assess the patent, the claims, and your commercial options.
• If someone is infringing your patent, a strategic, evidence-based approach (often starting with a letter and commercial discussions) can resolve matters without immediately going to court.
• You can reduce risk by doing early IP checks, tightening supplier/manufacturer contracts, using NDAs during negotiations, and making sure your business actually owns the IP it’s building.

Important: This article is general information only and doesn’t take into account your specific circumstances. It isn’t legal advice. If you’d like advice on your situation, speak to a qualified lawyer.

If you’d like help managing patent infringement risk in New Zealand - whether you’ve received an allegation, you’re enforcing your own patent rights, or you want to set up stronger IP and contract foundations - you can reach us at 0800 002 184 or team@sprintlaw.co.nz for a free, no-obligations chat.