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Should you patent your invention or keep it as a trade secret? A patent can give you enforceable exclusive rights over an invention but requires disclosure and generally lasts for a limited period of 20 years. A trade secret can potentially remain protected indefinitely, but only while the valuable information stays confidential.
The better choice depends on what you have created, how easily competitors could work it out, and how you plan to use it commercially.
For startups and entrepreneurs, this can be a significant strategic decision. Filing a patent is not automatically the right answer simply because an invention may be patentable. Equally, keeping something secret is not necessarily safer.
What is the difference between a patent and a trade secret?
A patent and a trade secret protect innovation in very different ways.
A patent can protect new technology, devices, substances, methods or processes that satisfy the relevant patentability requirements. In exchange for possible exclusive rights, the invention must ultimately be described publicly in the patent specification. In Australia, as with most other countries, standard patents can generally provide protection for up to 20 years.
A trade secret protects commercially valuable information because it remains confidential.
This might include:
- manufacturing methods
- formulas and recipes
- algorithms
- research or test data
- specialist know-how
- internal processes
- software-related information
- technical settings or methods
Unlike a patent, a trade secret is not registered with IP Australia. Its value depends on maintaining secrecy and taking appropriate steps to protect the information.
That distinction leads to the fundamental trade-off:
Patent
A patent involves disclosure in return for defined legal rights.
Trade Secret
A trade secret, as the name implies, relies on continuing confidentiality.
When is patent protection better than a trade secret?
Patent protection may make more sense when competitors are likely to discover or reverse engineer how your invention works once your product enters the market.
When your invention can be reverse engineered
Imagine you develop a new mechanical component that dramatically improves the efficiency of industrial equipment.
Once competitors buy the product, their engineers may be able to dismantle it and understand exactly how it works.
Keeping the invention secret would offer limited practical protection, as selling it on the open market inherently discloses its operating principles.
WIPO specifically identifies reverse engineering as one of the weaknesses of trade secret protection. Someone who legitimately discovers the information independently may be able to use it. A patent, by contrast, may provide rights capable of being enforced even when a competitor developed or discovered the technology independently.
When the invention is central to your commercial position
Patents can also be particularly valuable where a technical invention forms an important part of:
- a startup’s competitive advantage
- an investment proposition
- a licensing opportunity
- a collaboration
- a future sale of the technology or business
A patent is more than a document sitting in a filing cabinet. Properly used, intellectual property can become a strategic business asset and provide leverage in commercial discussions.
If you are still establishing whether the invention is genuinely new, an early patent search can also help you understand the existing landscape before investing heavily in protection.
When is a trade secret better than a patent?
Trade secret protection can be extremely powerful when an invention or process can realistically remain hidden.
Unlike patents, trade secrets do not have a fixed expiry date. WIPO notes that protection can potentially continue indefinitely provided the information remains secret and appropriate steps are taken to protect it.
When competitors cannot easily discover the secret
The classic example is a recipe or manufacturing process performed behind closed doors.
The KFC recipe illustrates this example well. Had a secret recipe been patented, the information would ultimately have become publicly available, and patent protection would eventually have expired. Keeping the commercially valuable information secret potentially allows the advantage to continue much longer.
A modern technology example might be a proprietary manufacturing process carried out entirely inside your factory.
Customers see the finished product, but they cannot determine the precise temperatures, tolerances, sequence or internal settings that make the process perform better. Those hidden elements may lend themselves to trade secret protection
When the valuable information may last longer than a patent
A trade secret can also be attractive when an advantage could remain valuable for decades.
There is no registration process or predetermined expiry date. But there is an important catch:
➡️ Once the secret is genuinely lost, the protection may be lost with it.
What are the risks of relying on trade secret protection?
Calling something a “trade secret” does not make it one.
A business needs practical systems for keeping valuable information confidential.
Clearly identify confidential information, restrict electronic or physical access and ensure that people working with the business understand what must remain confidential.
Current WIPO guidance similarly recommends measures such as:
- marking information as confidential
- limiting access on a need-to-know basis
- using physical and digital security
- using confidentiality agreements
- training employees
- reviewing access when employees leave.
In Australia, IP Australia also recommends using a non-disclosure agreement before revealing sensitive ideas, inventions, business methods or processes to people such as manufacturers, contractors, investors or potential business partners.
For more on sharing information safely, see our guide to using intellectual property for collaboration.
Can you use patents and trade secrets together?
Yes – the choice is not always simply patent versus trade secret.
A business might patent the core technology that competitors could discover from the finished product, while keeping additional know-how confidential.
For example, imagine a company develops a new water-treatment system.
It might:
- patent the core filtration mechanism
- keep the optimal operating settings confidential
- protect specialist manufacturing know-how as trade secrets
- register the product name as a trade mark
- protect aspects of the product’s appearance through design rights where appropriate.
WIPO expressly recognises this complementary approach: a patent may protect a technical feature while trade secrets protect the settings or know-how that make it perform particularly well.
Successful businesses rarely rely on a single right. The aim is to develop an intellectual property strategy that considers what should be protected, what should remain confidential and how those assets support the business.
Not sure whether to patent it or keep it secret?
The right answer is not always obvious. Some parts of an invention may be better suited to patent protection, while valuable know-how, processes or settings may be more useful kept confidential.
An early IP strategy conversation can help you identify what may be patentable, what should stay secret, and how those choices fit with your plans for development, investment, collaboration and commercialisation
Book an IP strategy consultation to work out the right protection approach for your invention.
Questions to ask before choosing a patent or trade secret
Patentability and commercial potential are two different questions.
Before deciding, consider:
- Could someone work out how the invention works from the finished product?
- Is the invention likely to remain commercially valuable for more than 20 years?
- How likely is someone else to develop the same solution independently?
- Can you realistically restrict access to the important information?
- Will you need to disclose the technology to manufacturers, employees, investors or commercial partners?
- Could formal patent rights strengthen future licensing, investment or collaboration discussions?
- Is the invention patentable?
There may also be other intellectual property rights involved. Our guide to the types of intellectual property explains how patents, trade marks, registered designs, copyright and trade secrets can protect different parts of the same business.
Do not disclose your invention before deciding
This is one decision that is worth making early.
IP Australia recommends keeping an invention secret until you have filed a patent application or decided on another protection strategy. Publicly demonstrating, selling, discussing or posting an invention online can affect patent rights. Australia has a 12-month grace period for certain disclosures, but international rules vary, so relying on a grace period can create unnecessary risk.
If you are still deciding what to do with a new invention, our guide to protecting an invention with an Australian patent explains the patent pathway in more detail.
Frequently asked questions about patents and trade secrets
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Is a trade secret cheaper than a patent?
There is no government registration process for a trade secret, so there are no patent filing and prosecution costs. However, maintaining confidentiality may still involve significant legal, security, contractual and operational costs.
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How long does a trade secret last?
Potentially indefinitely, provided the information continues to qualify for protection and remains confidential. Once the information becomes generally known, trade secret protection may disappear.
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Can someone legally copy my trade secret if they work it out themselves?
Typically, yes. Trade secret protection generally does not stop legitimate independent development or reverse engineering. That is one of the major differences between trade secrets and patent rights.
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Can I patent something after keeping it as a trade secret?
Potentially, provided the invention still meets the patentability requirements and has not been publicly disclosed in a way that destroys the necessary novelty. Commercialisation can also affect patentability options. Timing and jurisdiction matter, so obtain advice before disclosure.
Useful patent and trade secret resources
For further reading, these useful IP Australia resources include:
| Article Name and Description | Link |
| What to consider before applying for a patent If you’ve invented a new device, substance or process, you may choose to protect it with a patent. But before you apply, make sure you consider these things. | IP Australia What to consider before applying for a patent |
| Non-disclosure agreements A non-disclosure agreement (NDA), or confidentiality agreement, is a legal contract used to protect sensitive information that needs to be shared with others. | IP Australia Non-disclosure agreements |
| Frequently asked questions on trade secrets What trade secrets are, how they’re protected, and the legal and practical steps businesses should take to keep confidential information secure. | WIPO Frequently asked questions on trade secrets |
| How to protect trade secrets A practical guide explaining the specific steps businesses should take to keep trade secrets confidential, from employee controls and NDAs to partner management and enforcement actions. | WIPO How to protect trade secrets |
Patent or trade secret: making the right decision
There is no universal winner.
A patent may make sense when competitors can readily discover the invention, when enforceable exclusivity is commercially important, or when formal rights will support investment, licensing or growth.
A trade secret may be better where valuable information can genuinely remain hidden, and the commercial advantage could continue well beyond the life of a patent.
And sometimes the strongest strategy uses both.
If you’re unsure how this applies to your invention, Patenteur can help you work out what should be patented, what should stay confidential and what practical steps to take before your invention is disclosed, developed or commercialised.
