Alex is Sprintlaw’s co-founder and principal lawyer. Alex previously worked at a top-tier firm as a lawyer specialising in technology and media contracts, and founded a digital agency which he sold in 2015.
Do you need an IP assignment deed if founders, contractors or freelancers helped build your app? Usually, yes - if your company doesn't already own every key part of the product.
The good news is that this is a common startup tidy-up task, especially before investment, a sale, or a serious product launch. It doesn't mean you've done anything wrong. It just means you need a clear written record showing that the company owns the app intellectual property it depends on.
An IP assignment deed can help transfer software IP into your company cleanly, so due diligence doesn't get stuck on a missing document.
Do I Need An IP Assignment Deed For My App?
Yes, you probably need one if any app IP was created outside your company or without a clear written assignment.
In England and Wales, copyright in software is protected under the Copyright, Designs and Patents Act 1988. Code, screen designs, text, graphics, product documentation, databases and some technical materials can all be protected. The person or business that creates those materials is often the first owner, unless the law or a contract says otherwise.
For employees, copyright created in the course of employment will usually belong to the employer. Even then, your employment contract should still deal with inventions, confidentiality, moral rights consent, side projects and handover obligations.
For contractors, freelancers, consultants and agencies, the position is different. Paying an invoice doesn't automatically mean your company owns the copyright. You may only have an implied licence to use the work, which can be too uncertain for investors, buyers and larger customers.
You may need an assignment deed where:
- A founder built code before the company was incorporated.
- A freelancer created your MVP, UI designs, logo, backend architecture or documentation.
- An overseas developer or agency worked on the app without a proper assignment clause.
- Your original contract only says you can use the work, not that ownership transfers.
- You're preparing for investment, a business sale, a grant application, or enterprise customer due diligence.
A deed is often used because it can work even where there's no new payment being made for the transfer. The details matter, so it should be prepared around your exact app, parties and IP chain.
What Should An IP Assignment Deed Template Include?
An IP assignment deed template should cover the parties, the IP being transferred, the legal transfer wording, warranties, moral rights and signing formalities.
Here is a practical fill-in outline you can use to understand the moving parts. This isn't a finished legal document, and a lawyer should tailor it before you use it.
- Parties: Write the full legal name, address and, for a company, the company number of the person or business assigning the IP and the company receiving it.
- Background: Briefly explain the app, the work carried out and why the assignment is being signed now.
- Definitions: Define the app, software, materials, source code, object code, documentation, designs, trade marks, domain names, databases and other deliverables.
- Assignment Clause: State that the assignor assigns all rights, title and interest in the IP to your company, including copyright, database rights, design rights and any related rights.
- Timing: Say whether the assignment takes effect from the date of signing or from when the relevant work was first created.
- Territory And Duration: Make clear that the transfer is worldwide and for the full period of protection, including renewals and extensions where relevant.
- Moral Rights: Include a waiver of moral rights where appropriate under the Copyright, Designs and Patents Act 1988, especially for design, text and creative material.
- Warranties: Ask the assignor to confirm they created or own the IP, have the right to assign it, and haven't given conflicting rights to someone else.
- Further Assurances: Require the assignor to sign extra documents later if needed for UK IPO recordals, investor requests or product protection.
- Execution As A Deed: Include the correct signing blocks so individuals and companies sign properly.
Templates often miss the exact assets that make an app valuable. For example, a generic software assignment might cover source code but forget training data, Figma files, API documentation, admin dashboards, design systems, copy, testing scripts or deployment materials.
If your app uses third-party software, open source components, licensed assets or design deliverables, the deed can't magically transfer what the developer never owned. Those items need to be listed separately and checked against their licence terms.
How Do I Assign Software IP To My Company?
You assign software IP to your company by identifying who owns each part of the app, preparing a written IP assignment deed, signing it correctly and storing the evidence with your company records.
A sensible process looks like this:
- Map The App IP: List the code repositories, designs, brand assets, copy, databases, documentation, test scripts, analytics set-up, AI prompts or models, and deployment materials.
- Identify The Creator: Match each asset to the founder, employee, contractor, agency or third-party supplier who created it.
- Check Existing Contracts: Look for assignment clauses, licence wording, confidentiality terms and any limits on use.
- Prepare The Deed: Name the correct company as the recipient. Use the registered company name and company number from Companies House, not just your trading name.
- Deal With Third-Party Materials: Separate anything subject to an open source licence, stock asset licence, SaaS tool terms or marketplace terms.
- Sign Properly: Make sure each party executes the deed using the right signing block.
- Record And Store It: Keep the signed deed with your cap table, contractor agreements, board papers and due diligence folder.
For an individual signing a deed, their signature should be witnessed by an independent adult who is physically present. For a UK company, execution commonly happens under section 44 of the Companies Act 2006, either by two authorised signatories, or by a director signing in the presence of a witness.
If the assignment covers registered trade marks, registered designs or patents, you may also need to record the change of ownership with the UK Intellectual Property Office. Copyright itself doesn't have a UK registration system, so your signed assignment paperwork, and any later deed of assignment review, becomes especially important evidence.
What Happens If A Developer Won't Sign?
If a developer won't sign, don't ignore it - first check your existing contract, payment records and project history so you know your starting position.
Sometimes the issue is practical rather than hostile. The developer may be worried about losing the right to show work in a portfolio, reusing general know-how, or being blamed for future changes they didn't make. You may be able to solve that with clear wording.
Work through this order:
- Find The Paper Trail: Gather proposals, statements of work, invoices, emails, repository access logs, design files and payment confirmations.
- Read The Existing Terms: Check whether IP was already assigned, whether assignment depends on full payment, and whether any licence was granted.
- Clarify The Ask: Explain that you need the company to own the app IP for due diligence, not to stop them using general skills or know-how.
- Offer Sensible Carve-Outs: If appropriate, let them keep pre-existing tools, generic libraries or portfolio rights while assigning the app-specific work.
- Get Tailored Advice Early: If they still refuse, the next step depends on your contract, who created what, and how critical the material is.
Without a clear assignment, you may struggle to satisfy an investor, sell the business, grant licences to customers, or stop someone else reusing key parts of your app. You might still have some rights to use the work, but an uncertain implied licence is rarely enough for a serious funding round or acquisition.
If the disputed work is small, it may be cheaper and cleaner to replace it. If it's core to your product, you'll want advice before you rewrite, negotiate or make claims about ownership.
How Does This Affect Investment, Sale Or Product Launch?
Missing IP assignments can slow or block a deal because investors and buyers want proof that your company owns the product it's asking them to back.
During due diligence, you may be asked for:
- Founder IP assignment deeds.
- Contractor and developer IP assignment agreements.
- Employee invention and confidentiality clauses.
- Open source software registers and licence notes.
- Trade mark ownership records from the UK IPO.
- Domain name, app store and repository access records.
- Board approvals and company records for key IP transactions.
Say Maya and Leo start a fitness app. Maya designs the user journey in Figma before the company exists. Leo builds the first backend. They then pay a freelance developer £18,000 to build the iOS app and an agency £7,500 for the logo and landing page.
Six months later, their company is offered a £150,000 investment. The investor's lawyer asks for evidence that the company owns the source code, app designs, brand assets and website copy. The founders have invoices, but the freelancer's terms only say the company can use the app, and the agency's terms are silent on IP.
The practical fix is to prepare assignment deeds from Maya and Leo to the company, then negotiate assignment documents, or a deed of novation if needed, with the freelancer and agency. The open source packages in the app are listed separately, because those are licensed rather than owned. Once signed, the company can show a cleaner IP chain and the investor has fewer reasons to delay completion.
This same issue can come up before you launch with a large customer. Enterprise customers may ask for comfort that your company can license the software to them, protect confidential information and comply with UK GDPR and the Data Protection Act 2018 if the app handles personal data.
Common Mistakes To Avoid
The biggest mistake is assuming that payment equals ownership. It often doesn't, especially with contractors.
Here are other traps that come up often with app developer intellectual property:
- Using The Wrong Company Name: If the deed names your trading name instead of the legal company, you may create confusion. Use the registered name and company number from Companies House.
- Forgetting Founder Work: Work done before incorporation usually needs to be assigned into the company, even if the founder now owns shares.
- Missing Moral Rights: Copyright assignments don't always deal with moral rights. For creative material, ask whether a waiver is needed.
- Ignoring Open Source Licences: Some licences require notices, source code access or other conditions. Your assignment deed won't override those licence terms.
- Only Covering Future Work: If the key work has already been created, the deed should clearly deal with past work too.
- Leaving Out Supporting Assets: Your product may depend on documentation, API notes, user research, product copy, graphics, analytics configuration and deployment scripts, not just code.
- Not Checking Confidentiality: If a developer can freely share your roadmap, source code or customer data, ownership alone won't fully protect you.
- Signing Incorrectly: A deed with the wrong execution process can create avoidable doubt when you need certainty most.
It's also worth checking whether your app uses personal data, AI tools, payment integrations or regulated content. Those issues sit outside the IP assignment itself, but they often appear in the same investor or customer due diligence request.
Good documents work best when they match how your app was actually built. If several people touched the product, your assignment process should follow the real development history rather than relying on one broad template.
Key Takeaways
- An IP assignment deed helps transfer app IP from founders, contractors, freelancers or agencies into your company.
- Contractors usually keep ownership of what they create unless there's a clear written assignment.
- Your deed should cover the actual app assets, including code, designs, documentation, databases, brand assets and past work.
- Signing formalities matter, especially because a deed needs to be executed correctly.
- Investors, buyers and large customers often ask for IP ownership evidence during due diligence.
- Open source and third-party licensed materials should be tracked separately because they can't simply be assigned as if your developer owned them.
If you'd like help with your app IP assignment deeds, developer agreements, founder IP transfers or due diligence documents, you can reach us at 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat.
Drafted by Taylor, Sprintlaw's AI, and overseen by Alex Solo. How we write
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