Can an employment NDA legally claim ownership of my personal side projects built without company resources?

In most jurisdictions, an employer cannot legally claim ownership of side projects created entirely on your own time, without company equipment, and unrelated to the employer's business. However, overly broad "Invention Assignment" clauses can attempt to claim these rights, making it critical to identify if your contract exceeds legal boundaries.

The Legal Framework of IP Ownership

Employment contracts often contain an "Invention Assignment" clause, which is distinct from a standard Non-Disclosure Agreement (NDA). While an NDA protects trade secrets, an assignment clause transfers the ownership of your intellectual property (IP) to the company. The legality of these clauses hinges on the nexus between your work and the company's interests.

The Three-Prong Test for Ownership

To determine if an employer can claim your side project, courts typically look at whether the project meets these three criteria:

• Time: Was the work performed entirely outside of your working hours?
• Resources: Did you use any company equipment, proprietary software, trade secrets, or office space?
• Relevance: Is the project directly related to the employer's current business or anticipated research and development?

Key takeaway: If your project fails any of these prongs—specifically if it relates to your employer's business—the company has a strong legal argument for ownership, regardless of whether you used their laptop.

Action Item: Audit your current contract for the phrase "all inventions conceived during the term of employment." If this phrase lacks qualifiers regarding company business, it is a red flag.

Jurisdictional Protections: The California Model

Several U.S. states have enacted specific statutes to protect employees from overreaching IP assignment clauses. California Labor Code Section 2870 is the gold standard. It explicitly states that an employer cannot require an employee to assign rights to an invention developed entirely on their own time without using the employer’s equipment, supplies, facilities, or trade secret information.

Action Item: Check if your state has an "Employee Invention Act." If you live in a state without these protections, your contract language is the only law that governs your IP.

Identifying Overbroad Clauses

Many companies use "boilerplate" contracts that are intentionally broad to discourage side projects. You must look for specific language that defines the scope of the assignment.

Red Flags in Your Contract

• "Any and all inventions": This phrasing is dangerously broad and suggests the company owns everything you create, even if it is a hobby unrelated to your job.
• "Conceived during employment": This timeframe is often used to capture work done on weekends or vacations.
• "Related to the Company's business": This is often defined so broadly (e.g., "any software development") that it captures almost any coding project.

1. Review the "Definitions" section: Ensure "Inventions" is clearly defined.
2. Look for an "Exclusions" list: Some contracts allow you to list prior inventions or specific side projects that are exempt from the agreement.
3. Request an amendment: If you have a side project, disclose it in writing and ask for a written waiver or exclusion.

Key takeaway: Never assume that a "standard" contract is legally binding in its entirety. Courts frequently strike down clauses that are deemed unconscionable or against public policy.

Action Item: If you find an overbroad clause, consult with an attorney to draft a "Side Project Disclosure" letter to protect your current and future work.

Practical Steps to Protect Your IP

If you are building a side project, you must maintain a strict separation between your professional and personal life. Documentation is your best defense in a legal dispute.

• Use personal hardware: Never code on a company-issued laptop.
• Use personal accounts: Keep your GitHub, cloud storage, and email accounts entirely separate from company credentials.
• Document your time: Keep a log of when you work on your project to prove it was done outside of company hours.
• Avoid company IP: Do not use any code, libraries, or methodologies that you developed for your employer.

Action Item: Create a "clean room" environment for your side project. If you are ever challenged, you will need to prove that no company resources were touched.

Navigating the intersection of employment law and intellectual property can be complex, but you don't have to do it alone. TermScore uses advanced AI to automatically analyze your employment contracts, flagging overbroad IP assignment clauses and potential risks to your side projects in seconds. Ensure your personal work remains yours by letting TermScore provide the legal clarity you need.