Can an employment NDA legally claim ownership of side projects built on my own time without company equipment?

No, an employment NDA or IP assignment agreement cannot universally claim ownership of your side projects. In many jurisdictions, state laws explicitly protect inventions created on your own time, using your own equipment, provided they do not relate to your employer’s business or actual/anticipated research and development.

The Legal Framework of IP Ownership

Most employment contracts contain an "Invention Assignment Agreement." While these are standard, their enforceability is limited by state statutes designed to prevent employers from overreaching into an employee's personal creative life.

The Three-Prong Test for Ownership

To determine if your employer has a valid claim to your side project, courts typically evaluate whether the project meets the following criteria:

• Time: Was the work performed entirely outside of your designated working hours?
• Resources: Did you use any company equipment, proprietary data, trade secrets, or intellectual property to build the project?
• Relevance: Does the project relate directly to the employer's current business or their actively planned research and development?

Key takeaway: If you use a company-issued laptop, even for one hour, you may have inadvertently triggered an assignment clause that grants your employer ownership of the entire project.

Action Item: Audit your current development environment. If you are using a company-provided machine, migrate your side project to a personal device immediately.

Jurisdictional Variations

The legality of these clauses varies significantly by state. Understanding your local law is the first step in determining your rights.

California Labor Code Section 2870

California provides the strongest protection for employees. Under Section 2870, any provision in an employment agreement that requires an employee to assign rights in an invention developed on their own time is unenforceable, provided the invention does not relate to the employer's business.

Identifying Red Flags in Your Contract

Not all IP assignment clauses are created equal. Some are drafted with "catch-all" language that attempts to claim ownership of anything you create during the term of your employment, regardless of the subject matter.

Common Contractual Overreaches

• Overly Broad Scope: Clauses that claim "all inventions created during the term of employment" without qualifying the relationship to the employer's business.
• Ambiguous Definitions: Terms like "related to the company's interests" are often used to capture projects that are only tangentially related to your job.
• Lack of Exclusion Lists: The absence of an "Excluded Inventions" schedule where you can list pre-existing projects.

1. Review your contract for an "Excluded Inventions" or "Prior Inventions" section.
2. If missing, draft a written disclosure of your current side projects.
3. Submit this disclosure to your HR or legal department to establish a paper trail of your ownership.

Key takeaway: If your contract lacks an exclusion list, you are at a higher risk of a legal dispute. Always document your pre-existing work before signing any new employment agreement.

Best Practices for Protecting Your Intellectual Property

To maintain clear ownership of your side projects, you must maintain a strict "firewall" between your professional and personal work.

The "Firewall" Protocol

• Hardware Separation: Never use company hardware, software licenses, or cloud storage for personal projects.
• Network Isolation: Avoid using company VPNs or office Wi-Fi for development work.
• Time Management: Maintain a log of hours spent on your project to prove it was done outside of your 9-to-5 schedule.
• Communication: Never discuss your side project on company Slack, email, or internal messaging platforms.

Action Item: Create a "Project Ledger" that documents the dates, times, and hardware used for your side project. This serves as vital evidence in the event of a future ownership dispute.

Conclusion

While employers have a legitimate interest in protecting their trade secrets, they do not have a blank check to claim your personal innovations. By understanding the specific statutes in your state and maintaining a clear separation between your work and personal resources, you can effectively safeguard your intellectual property.

TermScore can automatically analyze your employment contracts to identify overreaching IP assignment clauses and highlight potential risks to your side projects, giving you the clarity you need to negotiate with confidence.