Can an employer claim ownership of personal side projects built without company resources via an NDA?

No, an employer cannot legally claim ownership of a personal side project developed entirely on your own time, using your own resources, provided it does not relate to the employer’s actual or anticipated business. However, broad IP assignment clauses can create significant legal risk if not carefully reviewed.

The Legal Framework of IP Ownership

In the absence of a written agreement, the default rule is that an employee owns the intellectual property they create. However, almost all employment contracts include an Invention Assignment Agreement. These clauses are designed to shift ownership of anything you create to the company. The enforceability of these clauses depends on the intersection of contract law and specific state statutes.

The "Scope of Employment" Test

Courts typically evaluate three factors to determine if an employer has a valid claim to your side project:

• Time: Was the work performed during your contracted working hours?
• Resources: Did you use company-provided laptops, software licenses, or proprietary data?
• Relevance: Does the project compete with or directly relate to the company’s current or anticipated business operations?

Key takeaway: If you use a company-issued laptop to write code for a side project, you have likely provided the employer with a colorable legal claim to that intellectual property, regardless of when you did the work.

Action Item: Audit your current project environment. If you are using any company-provided hardware or cloud services, migrate your project to a personal, isolated environment immediately.

State-Specific Protections

Several jurisdictions have enacted "Employee Invention Statutes" that explicitly limit the reach of broad IP assignment clauses. These laws act as a floor for employee rights, meaning an employer cannot contractually override them.

Action Item: Check if your employment contract includes a "Notice of Exclusion" or "Prior Inventions" list. If it does, disclose your side project in writing to your HR department to establish a clear paper trail of your ownership.

Red Flags in Your Employment Contract

When reviewing your contract, look for language that is overly broad. These clauses are often designed to intimidate employees rather than to be strictly enforced, but they can still lead to costly litigation.

• "All work product created during the term of employment": This is a massive red flag. It ignores the "relevance" test and attempts to claim everything you do while employed.
• "Related to the business of the Company": This phrase is often interpreted broadly by courts to include any industry the company might enter in the future.
• "Inventions conceived or reduced to practice": This covers the entire lifecycle of an idea, not just the final code or product.

How to Mitigate Risk

1. Document Everything: Keep a log of hours worked on your project, ensuring it is strictly outside of your 9-to-5 schedule.
2. Use Personal Infrastructure: Use your own GitHub account, personal cloud storage, and personal hardware. Never push code to a company-managed repository.
3. Avoid Conflicts of Interest: Do not build products that serve the same customer base or solve the same problems as your employer.

Key takeaway: If your side project is even tangentially related to your employer's business, you are at high risk. The safest path is to obtain a written waiver or "IP release" from your employer before proceeding.

Action Item: If you find broad assignment language, consult with an attorney to draft a "carve-out" agreement that explicitly excludes your side project from the scope of your employment contract.

Leveraging Technology for Contract Clarity

Navigating the nuances of IP assignment clauses is difficult without legal expertise. TermScore allows you to upload your employment agreement and automatically identify overly broad IP assignment clauses, potential conflicts of interest, and missing protections. By using AI to flag these specific risks, you can take control of your intellectual property before you start your next project.