Can my employer claim ownership of personal side projects under my employment NDA?

Yes, your employer can claim ownership of your side projects if your employment agreement contains a broad "Invention Assignment" clause. If your project relates to the employer's business, utilizes company resources, or was developed during work hours, the company likely holds legal title to your intellectual property.

Understanding Invention Assignment Clauses

Most employment contracts for tech and creative roles include an "Invention Assignment" clause. This is distinct from an NDA, which protects trade secrets. An assignment clause acts as a pre-emptive transfer of ownership for anything you create during your tenure.

The Three Pillars of Employer Ownership

Employers typically claim ownership if your project meets any of the following criteria:

• Scope of Business: The project relates directly to the employer’s current business or anticipated research and development.
• Resource Utilization: You used company hardware, software licenses, proprietary data, or office space to build the project.
• Time Allocation: The work was performed during your contracted working hours, even if you were "off the clock" for a lunch break.

Key takeaway: Never assume that working on a project at home makes it yours. If the project is in the same industry as your employer, the "Scope of Business" clause can be interpreted extremely broadly by courts.

Action Item: Review your contract for the specific definition of "Inventions" or "Developments." If it includes language like "any work related to the Company's business," you are at high risk.

Jurisdictional Protections: The State-Level Shield

Several U.S. states have enacted legislation to protect employees from overreaching assignment clauses. These laws generally invalidate contract provisions that attempt to claim ownership of inventions developed entirely on your own time without company resources.

Action Item: Check if your employment contract includes a "Notice of Exemption" or a specific reference to your state's labor code. If you live in a state without these protections, your contract terms are the final authority.

How to Legally Protect Your Side Projects

If you are building a startup or a significant side project, you must take proactive steps to ensure the IP remains yours.

1. Use Separate Hardware: Never touch your work laptop for personal projects. Use a dedicated machine for your side work.
2. Document Everything: Keep a log of when you work on your project. If you are challenged, you need evidence that the work occurred outside of company hours.
3. Request a Carve-Out: Before signing an offer letter, ask for an "Excluded Inventions" addendum. This is a list of projects you are currently working on that the employer agrees to waive ownership of.
4. Avoid Company IP: Do not use any code, libraries, or data that you accessed through your employer.

Key takeaway: A written agreement is the only way to guarantee ownership. If you have a project you care about, get a formal waiver signed by your employer's legal department before you continue development.

Action Item: Draft a simple document listing your current side projects and ask your HR representative to attach it to your employment agreement as an "Excluded Inventions" exhibit.

The Risks of Ignoring Contractual Language

Ignoring these clauses can lead to "IP clouding," where investors will refuse to fund your startup because they cannot verify who owns the code. If your employer discovers your project, they could claim a "shop right" or full ownership, effectively ending your ability to monetize your work.

TermScore can automatically analyze your employment contracts to identify aggressive invention assignment clauses and highlight potential risks to your personal projects. By uploading your agreement, you can receive an instant breakdown of your ownership rights and identify where you need to negotiate for better protections before you sign.