What makes an invention assignment clause unenforceable?

Clauses are typically unenforceable if they attempt to claim ownership of inventions created without company equipment, supplies, facilities, or trade secrets, and that do not relate directly to the employer's business or anticipated research.

How can I protect my personal projects from my employer?

Ensure you work on personal projects outside of business hours, use your own hardware and software, avoid company trade secrets, and explicitly carve out existing intellectual property in your employment agreement.

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Can an employment NDA legally claim ownership of freelance projects created on personal time?

Q: Can an employment NDA legally claim ownership of freelance projects created on personal time?

Generally, no. Most jurisdictions, particularly California, Illinois, and Washington, restrict employers from claiming ownership of inventions created entirely on personal time without company resources. However, overbroad 'Invention Assignment' clauses can create legal ambiguity that requires professional review.

No, an employment NDA or invention assignment agreement cannot legally claim ownership of freelance projects created entirely on your own time, using your own equipment, provided the work does not relate to the employer's business or utilize their trade secrets. However, poorly drafted contracts often contain overbroad language that creates significant legal risk.

The Legal Reality of Invention Assignment Clauses

While an NDA is primarily designed to protect confidential information, many employers bundle it with an Invention Assignment Agreement. This document dictates who owns the intellectual property (IP) you create during your tenure. In many states, these clauses are subject to strict statutory limitations designed to protect an employee's right to moonlight.

Key Statutory Protections

Several states have enacted specific labor codes that render overbroad assignment clauses void as a matter of public policy. For example, California Labor Code Section 2870 explicitly prohibits employers from requiring employees to assign rights to inventions developed entirely on their own time without using the employer's equipment, supplies, facilities, or trade secret information.

California (Lab. Code § 2870): Protects inventions developed on personal time without company resources.
Illinois (Employee Patent Act): Similar protections for inventions developed without company equipment or trade secrets.
Washington (RCW 49.44.140): Limits assignment to inventions that relate directly to the employer's business.

Key takeaway: Even if you signed a contract claiming the employer owns 'everything you create,' state law often overrides that language if the project is unrelated to your job duties and was created without company assets.

Action Item: Check if your state has an 'Invention Assignment' statute. If you live in a state without specific protections, your contract language is the primary governing document, making precise drafting critical.

Red Flags in Your Employment Agreement

When reviewing your contract, look for specific language that signals an overreach. Employers often use 'catch-all' phrases that attempt to capture every idea you have, regardless of when or how it was conceived.

Clause Type	Risk Level	Description
Narrow Assignment	Low	Limited to inventions related to the employer's current or anticipated business.
Broad Assignment	High	Claims all 'work product' created during the term of employment.
Total Ownership	Critical	Claims all inventions, ideas, or discoveries made at any time during employment.

Common Contractual Traps

'Related to Business' Ambiguity: If your employer is a tech conglomerate, 'related to business' could be interpreted to include almost any software project.
Use of Company Hardware: Using a company-issued laptop to write code for a side project is the fastest way to forfeit your ownership rights.
Trade Secret Contamination: If you use any proprietary knowledge gained at work to build your freelance project, the employer may claim a legal interest in the IP.

Action Item: Audit your current contract for the phrase 'related to the employer's business.' If it is not defined, request a written clarification or an 'IP Carve-out' document.

How to Protect Your Freelance IP

Protecting your personal projects requires a combination of strict operational discipline and clear contractual boundaries. You must treat your freelance work as a separate entity from your employment.

The 'Clean Room' Approach: Never use company-provided hardware, software licenses, or cloud storage for personal projects.
Time Segregation: Document that your freelance work is performed strictly outside of your contracted employment hours.
Explicit Carve-outs: Before signing an employment agreement, attach a 'Schedule A' or 'Prior Inventions' list that explicitly excludes your ongoing freelance projects.
Avoid Company Resources: Do not use company email, Slack, or internal servers to discuss or store your freelance work.

Key takeaway: The burden of proof often falls on the employee to demonstrate that a project was created independently. Keep a digital paper trail of your development process, including timestamps and hardware logs.

Action Item: Create a 'Prior Inventions' document today. List your existing freelance projects and have your employer acknowledge them in writing to prevent future ownership disputes.

The Role of AI in Contract Analysis

Navigating the nuances of intellectual property law is complex, and standard legal advice can be prohibitively expensive. TermScore provides an AI-powered solution that automatically scans your employment agreements to identify overbroad invention assignment clauses and potential IP risks. By highlighting problematic language before you sign, TermScore empowers you to negotiate better terms and protect your creative output with confidence.