Can an employment NDA legally claim ownership of personal side projects built on my own time?
Can your employer own your side projects? Learn the legal limits of IP assignment clauses and how to protect your work. Get your contract analyzed today.
Can an employment NDA legally claim ownership of personal side projects built on my own time?
In most jurisdictions, an employer cannot legally claim ownership of personal side projects created entirely on your own time, using your own equipment, and unrelated to the employer's business. However, if your contract contains an overly broad 'Invention Assignment' clause, it may create a legal presumption of company ownership that you would have to fight in court.
The Anatomy of an Invention Assignment Clause
Most employment contracts include an 'Invention Assignment' or 'Proprietary Information and Inventions Agreement' (PIIA). These clauses are distinct from NDAs, which focus on confidentiality, but they are often bundled together. The goal of these clauses is to ensure that anything you create that is 'work-related' belongs to the company.
The Three Pillars of Ownership
Courts typically evaluate ownership based on three specific criteria. If your project meets all three, it is almost certainly yours:
- Time: The work was performed entirely outside of your compensated working hours.
- Resources: No company equipment, software, proprietary data, or trade secrets were used.
- Relevance: The project does not relate to the employer's current business or anticipated research and development.
Key takeaway: If your side project uses even a single line of proprietary code or a company-licensed software tool, you may have inadvertently triggered an assignment clause that grants your employer full ownership of your intellectual property.
Action Item: Audit your current development environment. If you are using a company-provided laptop, assume the company owns everything on it.
Jurisdictional Protections: The California Model
Several states have enacted legislation to protect employees from 'overreaching' contracts. California Labor Code Section 2870 is the gold standard. It explicitly states that any provision in an employment agreement that requires an employee to assign rights to an invention developed entirely on their own time is unenforceable, provided it does not relate to the employer's business.
| State | Statute/Legal Basis | Key Protection |
|---|---|---|
| California | Labor Code 2870 | Protects inventions made on own time/resources. |
| Washington | RCW 49.44.140 | Limits assignment of inventions unrelated to business. |
| Illinois | Employee Patent Act | Protects inventions developed without company resources. |
| Delaware | 19 Del. C. § 805 | Prevents assignment of non-work-related inventions. |
Action Item: Check your state's labor laws. If you live in a state without specific protections, your contract's language is the final word, making your PIIA review critical.
Red Flags in Your Employment Contract
When reviewing your contract, look for these specific phrases that signal an attempt to claim your personal work:
- 'Any and all inventions': This is a massive red flag. It lacks the necessary scope limitations.
- 'Related to the business of the Company': This is often defined so broadly that it could encompass almost any software or creative project.
- 'Developed during the term of employment': This ignores the 'on your own time' distinction and claims everything you do while employed.
How to Protect Your Intellectual Property
You do not have to accept a contract that threatens your side projects. Use these steps to negotiate better terms:
- Disclose Prior Inventions: Most contracts have an 'Exhibit A' or 'Prior Inventions' list. Explicitly list your side projects there before signing.
- Request a Carve-out: Ask for an addendum that specifically excludes your side projects from the definition of 'Company Inventions.'
- Use Personal Hardware: Never touch your side project code on a company-issued machine.
- Document Everything: Keep a log of hours worked on your project to prove it was done outside of your 9-to-5.
Key takeaway: A verbal agreement with your manager is not enough. If it is not in writing, the PIIA in your contract will likely supersede any casual promises made during the hiring process.
Action Item: Before signing your next offer, create a 'Prior Inventions' document and attach it as an exhibit to your contract. This creates a legal record that the company acknowledges your ownership of those specific projects.
The Role of AI in Contract Analysis
Navigating the dense legal jargon of employment agreements is difficult, but you don't have to do it alone. TermScore uses advanced AI to scan your employment contracts for aggressive IP assignment clauses, hidden non-competes, and restrictive covenants. By identifying these red flags before you sign, TermScore empowers you to negotiate from a position of strength and ensure your personal projects remain yours.
TermScore Research
Our legal AI analyzes thousands of contracts to surface market standards, common pitfalls, and actionable insights for anyone who signs agreements.