Can I patent software in the UK?
By SuLe · Updated 11 May 2026
Usually not — computer programs "as such" are excluded from patentability in the UK under the Patents Act 1977 s.1(2), so most software cannot be patented. The exception is narrow: software can be patented where it makes a genuine technical contribution beyond the program itself, such as controlling hardware or improving how a computer works. For most startups, copyright and confidentiality do the real work.
Key facts
- Computer programs "as such" are excluded from patentability (Patents Act 1977 s.1(2)).
- Software can be patented where it makes a technical contribution outside the program itself — a high bar.
- Copyright protects your code automatically as a literary work, with no registration needed.
- Patents are slow and costly to obtain and enforce; most app-layer startups rely on copyright, confidentiality and speed.
- The exclusion is about the "as such" wording — how the invention is framed and what it technically achieves matters.
Is software patentable in the UK at all?
Only in limited cases. Section 1(2) of the Patents Act 1977 lists computer programs among the things that are not inventions "as such", which is why a plain software program cannot be patented.
The words "as such" are doing the heavy lifting. They mean the exclusion bites on the program in itself, but not necessarily on an invention that happens to be implemented in software and also produces a technical effect elsewhere.
So the question is never simply "is it software?" — it is whether the claimed invention contributes something technical beyond the mere running of a program. That is a narrow and often contested line.
What counts as a "technical contribution"?
An effect outside the program as such. Examples on the patentable side include software that controls an industrial process or physical hardware, or that improves the internal workings of a computer — making it faster, more reliable, or more efficient in a technical way.
On the excluded side sit pure business methods, mathematical algorithms and ordinary app features that produce no technical effect beyond running code. A slicker workflow or a clever pricing rule, without more, is generally not patentable.
| Likely patentable (technical contribution) | Likely excluded ("as such") |
|---|---|
| Software controlling machinery or hardware | A business method dressed as an app |
| Improving how a computer works internally | A pure mathematical algorithm |
| A faster, more reliable technical process | A user-interface feature with no technical effect |
| Signal-processing or engineering methods | Presenting information / arranging data |
Because the line is fact-specific and the bar is high, this is a question for a patent attorney, not a DIY assessment. Framing matters, and small differences in what the invention technically achieves can decide it.
If I can't patent it, how do I protect my software?
Copyright, mostly — and it is automatic and free. Copyright arises on creation, protects your code as a literary work, and needs no registration in the UK, lasting the author's life plus 70 years.
Around that, build the rest of the standard startup stack: confidentiality for genuine trade secrets, and watertight IP assignments so the company — not a contractor — actually owns the code. Speed to market is itself a form of protection for fast-moving software.
The one thing copyright does not do is stop someone independently writing similar software; it protects your expression, not the underlying idea. For most app-layer startups that trade-off is acceptable, and the broader IP stack matters more than chasing a patent.
Is a patent worth it for an early-stage startup?
Rarely at the very start. Patents are slow to grant and expensive to obtain and enforce, and most software will not clear the "as such" exclusion — so the effort is often wasted for early app-layer companies.
Where a patent can pay off is genuine deep-tech: a novel, non-obvious invention with a real technical contribution, where protection is central to the business and there is budget to pursue and defend it. Even then, filing interacts with confidentiality, because public disclosure before filing can destroy novelty.
For everyone else, the honest answer is that a patent is not the priority. Owning your code, protecting your brand with a trade mark, and keeping your secrets are what actually move the needle early on.
Worked example
Nadia's startup, CoreFlux Ltd, builds machine-learning infrastructure. One component is a method that changes how data is scheduled across hardware to cut processing time — a plausible technical contribution rather than a pure algorithm.
That specific method might be patentable, so Nadia takes it to a patent attorney before disclosing it publicly, since a pre-filing disclosure could sink novelty. The rest of CoreFlux's product — its dashboard, its APIs, its business logic — is ordinary software "as such" and is not worth patenting. For that, Nadia relies on automatic copyright, signed assignments from her two contractors, and confidentiality. She spends her patent budget on the one thing that might qualify, not the whole product.
Where founders go wrong
Assuming all software is patentable.
Programs "as such" are excluded; only a genuine technical contribution qualifies.Disclosing the invention before filing.
Public disclosure can destroy novelty and kill a patent you might have had.Over-investing in patents too early.
They're slow and costly; ownership and brand usually matter more at seed stage.Forgetting copyright already protects the code.
It's automatic and free — no registration exists or is needed.
Related questions
Is software patentable in the UK?
Only in limited circumstances. The Patents Act 1977 s.1(2) excludes computer programs "as such" from patentability. Software can be patented where it makes a technical contribution beyond the program itself — for example controlling hardware or improving how a computer works — but the bar is high.
What counts as a "technical contribution"?
Broadly, an effect outside the running of the program as such: controlling an industrial process or hardware, improving the internal workings of a computer, or a faster or more reliable technical process. A pure business method, algorithm or app feature with no technical effect usually falls on the excluded side.
If I can't patent it, how do I protect my software?
Copyright protects your code automatically as a literary work, with no registration and no cost. Add confidentiality for genuine secrets, watertight IP assignments so the company owns the code, and speed to market. For most app-layer startups this stack matters far more than a patent. [More: What IP protection does an early-stage startup actually need?]
Is a patent worth it for an early-stage startup?
Rarely at the earliest stage. Patents are slow and expensive to obtain and enforce, and most software won't qualify. They can make sense where there is genuinely novel, non-obvious technology with a technical contribution and the budget to pursue and defend a filing — often deep-tech rather than app-layer.
Whether your software crosses the "technical contribution" line is a genuinely specialist judgement — and getting it wrong, or disclosing too early, can cost you the patent entirely. A SuLe solicitor can tell you whether a patent is realistic and worthwhile, or whether copyright and confidentiality serve you better. Book a free IP health check call and get a straight answer before you spend.
Keep reading: What IP protection does an early-stage startup actually need? · Who owns copyright in software in the UK? · Who owns the IP my employees and contractors create? · Who owns AI-generated code or content? · What is an IP assignment agreement and when do I need one?
Primary sources: GOV.UK — Patent your invention · GOV.UK — How copyright protects your work
