Who Owns Employee Inventions?

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Introduction
Default Rule: The Employee Owns the Invention
Exception: Invention Assignment Agreements
Shop Rights: Employer’s Limited Protection
Employees Hired to Invent
University and Medical Research Settings
No Agreement: Risk for Employers
Key Takeaways
Practical Considerations
Need Help Structuring Ownership of Employee Inventions?

Introduction

When an employee creates a new product, process, or technology, a fundamental legal question arises: who owns the invention? The answer is not always intuitive, and it often turns on the presence or absence of an invention assignment agreement, the nature of the employee’s work, and the circumstances surrounding the invention’s development.

Understanding how employee inventions are treated under U.S. law is critical for both employers and employees, particularly in technical fields where intellectual property is a core asset. Businesses developing new technologies should also consider how ownership ties into broader IP portfolio strategy.

Default Rule: The Employee Owns the Invention

Under U.S. patent law, the default rule is straightforward: the inventor owns the invention. 35 U.S.C. § 101; Bd. of Trs. of the Leland Stanford Jr. Univ. v. Roche Molecular Sys., Inc., 563 U.S. 776, 785–86 (2011).

Absent an agreement to the contrary, an employer does not automatically own employee inventions, even if:

The invention was created during employment
The invention relates to the employer’s business
The employee used general knowledge or skills gained on the job

This default rule often surprises companies that assume ownership follows employment, particularly in early-stage companies developing utility patents or other proprietary technologies.

Exception: Invention Assignment Agreements

Most employers address this issue through an invention assignment agreement, which contractually transfers ownership of employee inventions to the employer. 35 U.S.C. § 261.

A well-drafted invention assignment agreement typically:

Assigns inventions created within the scope of employment
Covers inventions developed using company resources
May include future inventions conceived during employment
Defines what is excluded, such as prior inventions

These agreements are often implemented alongside broader patent prosecution strategies to ensure inventions are properly captured and protected.

Courts distinguish between present assignments and mere promises to assign. Stanford v. Roche, 563 U.S. at 785–87.

Shop Rights: Employer’s Limited Protection

Even without an invention assignment agreement, employers may still have limited rights under the “shop rights” doctrine.

A shop right is a non-exclusive, royalty-free license that allows the employer to use the invention when the employee developed it using the employer’s time, materials, or facilities. United States v. Dubilier Condenser Corp., 289 U.S. 178, 188–89 (1933).

Importantly, shop rights do not transfer ownership. The employee retains title to the patent, which can affect downstream activities such as IP licensing or commercialization.

Employees Hired to Invent

Courts may assign ownership to an employer if the employee was specifically hired to invent. Dubilier, 289 U.S. at 187.

This applies when:

The employee’s job duties include creating inventions or developing solutions for a specific problem
The invention falls within those duties

This issue frequently arises in technical roles, including software, hardware, and biotechnology innovation, where inventorship and ownership can diverge if agreements are not clearly defined.

University and Medical Research Settings

Ownership of employee inventions becomes more complex in academic and medical environments.

Universities, hospitals, and research institutions typically require researchers to sign invention assignment agreements as a condition of employment or funding. Federally funded research is governed by the Bayh-Dole Act. 35 U.S.C. §§ 200–212.

In collaborative environments, ownership may also depend on:

Joint inventorship (35 U.S.C. § 116)
Sponsored research agreements
Institutional intellectual property policies

These issues are especially common in life sciences, where research may lead to biological patents or regulated technologies discussed in contexts like medical device regulation.

No Agreement: Risk for Employers

Employers that do not use invention assignment agreements face significant risk.

Without an agreement:

The employee may retain full ownership of valuable intellectual property
The employer may only have shop rights (Dubilier, 289 U.S. at 188–89)
Investors or acquirers may view the company’s IP portfolio as defective

This risk often becomes apparent during due diligence, particularly when conducting patentability analyses or freedom to operate (FTO) reviews.

Key Takeaways

Ownership of employee inventions depends on a combination of patent law, contract law, and employment context:

Patent rights initially vest in the inventor (35 U.S.C. § 101; Stanford v. Roche)
Written assignment agreements control ownership (35 U.S.C. § 261)
Employers may have limited shop rights absent assignment (Dubilier)
Employees hired to invent may not retain ownership (Dubilier)
Academic and federally funded research introduces statutory overlay (35 U.S.C. §§ 200–212)

Practical Considerations

For employers:

Implement clear invention assignment agreements at the outset of employment
Align agreements with your patent application strategy
Ensure compliance with applicable state law

For employees:

Understand what rights you are assigning before signing
Identify prior inventions for exclusion
Be aware of obligations tied to funding or institutional policies

Need Help Structuring Ownership of Employee Inventions?

Whether you are an employer building an IP portfolio or an employee evaluating your rights, properly structuring ownership is critical. Learn more about working with a patent attorney or contact our firm to discuss your situation.

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Tagged IP, Patents