Can I Patent My Idea Before I Show It to Investors?

Can I patent my idea before I show it to investors?

This is one of the most important questions for early-stage inventors and start-up businesses.

Bringing a new invention to market is rarely simple. Development costs money. Prototypes cost money. Testing costs money. Manufacturing, regulatory work, marketing and commercial rollout all cost money. Intellectual property protection can also involve time, planning and expense. For that reason, many inventors quite naturally look for investors at an early stage.

That creates an obvious tension. Investors usually want to understand what the invention is, why it matters, and what is protectable about it. At the same time, patent law in the United Kingdom places real importance on novelty. Under section 2 of the Patents Act 1977, an invention is new only if it does not already form part of the state of the art, and the state of the art includes matter made available to the public anywhere in the world by written or oral description, by use, or in any other way before the priority date. 

So the practical answer is this: you usually should file a patent application before making an unrestricted disclosure of the invention to investors. That does not mean you must wait until a patent is granted. In practice, grant takes much longer. What matters at the early stage is usually getting a properly prepared patent application filed before public disclosure, so that a filing date and priority position are secured. The UK patent framework expressly centres patentability on novelty, inventive step and industrial applicability, and novelty is assessed by reference to what has already been made available to the public. 

Why timing matters

Inventors sometimes speak of “patenting” an idea before speaking to investors. Strictly speaking, it is often not possible to obtain a granted patent before those conversations begin, especially if funding is needed in order to move the invention forward. However, that does not mean you should speak freely first and worry about patent filing later.

The important step is usually to file at least one patent application before any disclosure that might place novelty at risk. Once the application has been filed, you are generally in a much safer position to discuss the invention commercially, because the filing has already secured the relevant date for what is disclosed in that application. The UK IPO’s guidance on novelty is built around the statutory rule that prior public disclosure can destroy novelty. 

This is why, in many cases, the better question is not “can I get a granted patent before I speak to investors?” but rather “should I file a patent application before I speak to investors?” In most cases, the answer is yes.

Can talking to investors destroy novelty?

Potentially, yes.

If the invention is made available to the public before filing, that may count against novelty. The statutory wording is intentionally broad. It is not limited to formal publication. It extends to matter made available to the public by written disclosure, oral disclosure, use or any other way. 

That is why inventors must be careful. A meeting with an investor may feel private, commercial and preliminary, but if confidentiality is not properly controlled there is a risk that disclosure can spread beyond the original discussion. Once that happens, the novelty position may become difficult or impossible to repair.

What about a non-disclosure agreement?

A non-disclosure agreement, or NDA, can be useful and is often sensible. The UK government’s published guidance expressly describes an NDA as a tool to help keep an invention secret when talking to others. 

However, an NDA is not a complete substitute for filing a patent application first.

There are several reasons for that. First, confidentiality arrangements need to be properly put in place and properly observed. Secondly, information may sometimes leak beyond the immediate parties. Thirdly, there may later be disagreement about what was disclosed, to whom, and on what terms. Fourthly, people not party to the NDA may come to know of the invention. As a matter of risk management, filing first is often much safer than relying solely on confidentiality arrangements.

So NDAs are helpful, but they are not usually the whole answer.

Why filing first can also help with investment

There is another, more commercial reason to file first. Investors and their advisers often want to see that the invention has been clearly identified and professionally documented. A filed patent application can help demonstrate that the invention has been thought through and that steps have already been taken to protect the opportunity.

It can also help frame the discussion more clearly. Rather than presenting investors with a loose concept or undeveloped idea, you are presenting them with an invention that has been analysed, described and reduced to a legal filing. That can improve the seriousness and credibility of the investment conversation.

In some cases, it may also be sensible to consider more than one patent application over time, rather than assuming that the whole investment case depends on a single filing. Different technical concepts, improvements, fallback positions or later developments may justify separate applications. That can reduce the risk of everything depending on one patent specification and can help build a broader intellectual property position. This is a strategic point rather than a fixed legal rule, but it is often commercially important.

Does that mean every investor conversation must wait until everything is perfect?

No. Waiting for perfection is rarely realistic.

A patent filing does not need to be the last word on the technology before investor discussions begin. But it should usually be good enough to capture the invention properly as it stands at that point. If the invention evolves, later filings may sometimes be considered for later developments or refinements.

The key point is that patent timing and investment timing should be coordinated. You do not normally need to delay all commercial engagement until grant. But you usually should think seriously about filing before unrestricted disclosure.

What should I do in practice?

As a practical sequence, the safest approach is often to identify the invention clearly, prepare and file an initial patent application covering what is presently known, and only then move into broader investor discussions. Where pre-filing conversations are unavoidable, confidentiality should be handled carefully, including consideration of NDAs, but that should generally be treated as risk reduction rather than as the preferred substitute for filing. The UK government’s own materials support the use of NDAs for keeping inventions secret, but the statutory novelty rule remains the central legal backdrop. 

Conclusion

So, can you patent your idea before you show it to investors?

In practical UK terms, the better answer is that you should usually file a patent application before showing the invention to investors without reliable confidentiality protections, and ideally before making any wider disclosure at all. That is because novelty is a fundamental requirement of patentability, and prior public disclosure can destroy it. 

It is often not realistic to obtain a granted patent before investor engagement begins. But it is often very realistic, and very sensible, to have at least one patent application filed first. That can help protect novelty, improve investor confidence, and provide a more secure foundation for commercial discussions.

At Patent Outsourcing Limited, we assist inventors with identifying patentable concepts, preparing patent applications and planning filing strategy at the early commercial stage, including where investment discussions are expected.

Should I file a patent before talking to investors?
In most cases, yes. Filing first is often the safer approach because novelty can be lost if the invention is made available to the public before filing. 

Can I show my invention to investors under an NDA?
An NDA can help preserve confidentiality and is expressly recognised in UK government guidance as a way to keep an invention secret when talking to others, but it is usually better to treat it as an additional safeguard rather than a complete substitute for filing first. 

Do I need a granted patent before approaching investors?
Usually not. What is often most important at the early stage is having a patent application filed before broader disclosure, not waiting for grant. The legal risk arises from novelty-destroying disclosure before the filing date. 

Can one conversation destroy patent rights?
Potentially, yes, if the invention is made available to the public and confidentiality is not properly preserved. The statutory novelty rule is broad and includes oral disclosure and use as well as written publication. 

What if my invention develops after the first filing?
That may raise the possibility of later filings for later developments, refinements or related inventive concepts, depending on the facts. That is a matter for case-specific advice.