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Invention Assignment Laws in Louisiana: Who Owns What You Create

Last reviewed: September 2026

Quick Answer

In Louisiana, employers do not automatically own inventions you create. Under Louisiana Revised Statutes § 9:2721–9:2723, employers can only claim inventions made during work hours using company resources and directly related to the employer's business. Any invention assignment agreement must be in writing and conspicuously presented. You retain ownership of inventions created on your own time with your own resources, even if you work in a technology or engineering field, unless you signed a valid written agreement.

Key Facts

  • Louisiana employers can only claim ownership of inventions made during work hours using company resources.
  • Employees retain rights to inventions created on personal time with personal resources, unless there's a written agreement.
  • Louisiana requires invention assignment agreements to be in writing and conspicuously presented to the employee.
  • Employees cannot be required to assign inventions unrelated to the employer's business or demonstrably developed on personal time.
  • Louisiana law gives workers stronger protections than many states regarding invention ownership rights.

Federal Law: The Baseline

Federal law does not provide a unified statute governing invention ownership between employers and employees. Instead, federal courts apply state contract law and the Uniform Trade Secrets Act (UTSA), adopted in modified form across states. The federal government does recognize intellectual property rights through patents (35 U.S.C. § 101 et seq.) and copyrights (17 U.S.C. § 101 et seq.), but these statutes do not dictate whether an employer or employee owns a work product.

The default federal rule, absent a written agreement, follows the principle that an employee owns inventions created outside the scope of employment. Federal patent law grants inventors the right to seek patent protection, but does not resolve ownership disputes between employers and employees—that is determined by state law or the parties' contract.

Employers in federally regulated industries (defense, aerospace, nuclear) may have additional obligations under federal contracts to assign inventions, but this is contractual, not statutory. The key federal principle is that invention ownership is primarily a matter of state law and written agreement.

Louisiana Law: What's Different

Louisiana has one of the strongest state-level protections for employee invention rights in the United States. Louisiana Revised Statutes §§ 9:2721–9:2723 establish clear limits on employer claims to employee inventions.

Under § 9:2721, an employer can claim ownership or assignment of an invention only if: (1) the invention was developed entirely on the employer's time, using the employer's equipment, supplies, facilities, or trade secrets; (2) the invention relates at the time of conception to the employer's existing or demonstrably anticipated business or research; or (3) the invention results from any work performed by the employee for the employer. Critically, Louisiana law does not permit employers to claim inventions that are the result of employee work if they are developed on the employee's own time and with the employee's own resources, unless there is a written agreement explicitly addressing this.

Section 9:2722 requires that any invention assignment agreement be presented to the employee in writing and in a manner that is conspicuous—meaning it cannot be buried in fine print or presented as part of a larger employment contract without clear notice. This is stronger than federal law, which does not mandate conspicuous presentation.

Section 9:2723 explicitly protects employee rights. An employee cannot be required to assign, or be held in breach of contract for refusing to assign, any invention that the employee developed entirely on the employee's own time, with the employee's own resources and equipment, unless the invention: (a) relates at the time of conception to the employer's existing or demonstrably anticipated business or research, or (b) results from any work performed by the employee for the employer.

The practical effect is that Louisiana law creates a presumption of employee ownership unless the employer satisfies strict conditions. Louisiana employers cannot use blanket "all inventions" clauses without limitation. The law is significantly stronger than many other states, which permit broader assignment agreements.

Key Numbers & Thresholds

No minimum employee count or employer size threshold applies. Invention assignment obligations apply to all employers in Louisiana regardless of size. There is no dollar cap on the value of inventions subject to these protections. Written notice of invention assignment terms must be provided before or at the time of employment—verbal agreements are not enforceable. The law applies to inventions conceived during the employment relationship; there is no statute of limitations specified, but inventions conceived after employment ends belong to the former employee.

Exceptions & Special Cases

Louisiana law contains important exceptions and limitations on employer invention claims. First, employers cannot claim inventions developed entirely on the employee's personal time using personal resources unless the invention directly relates to the employer's existing or demonstrably anticipated business at the time of conception. This is an exception to the exception: an employer can claim an invention made on personal time if it relates to the employer's known business.

Second, non-compete and non-solicitation agreements do not affect invention assignment rights. An employer cannot use a non-compete clause to circumvent the written-notice requirement or to claim inventions the employee developed outside the scope of employment.

Third, the law does not apply to inventions conceived after employment has ended. Once an employee leaves the company, all subsequent inventions belong to the former employee, regardless of whether they relate to the employer's business.

Fourth, employers in Louisiana cannot require employees to sign overly broad invention assignment agreements as a condition of employment if those agreements violate § 9:2723. An employee's refusal to assign rights to an invention protected under § 9:2723 is not grounds for termination or breach of contract.

Fifth, if an invention assignment clause in an employment contract is found to be unconscionable—meaning it is shockingly unfair or obtained through deception—a Louisiana court may refuse to enforce it. This provides an additional employee protection beyond the statutory requirements.

Sixth, if an employer fails to provide written, conspicuous notice of invention assignment obligations, those obligations may not be enforceable. An employer's reliance on an employee handbook or oral representation is insufficient.

What to Do If Your Rights Are Violated

Step 1: Document Your Invention Process. Keep detailed records of when and where you developed the invention, what resources you used (personal computer, home equipment, employer equipment), and whether you used employer trade secrets or confidential information. Create a timeline showing dates of conception, development, and completion. Save emails, notes, lab notebooks, or code repositories that demonstrate your personal involvement and the use of personal resources. Photograph or preserve evidence of your work environment (home vs. office). Note any employer communications about whether the invention falls within your job responsibilities.

Step 2: Review Your Employment Agreement and Any Invention Assignment Agreement. Obtain a copy of your original employment offer letter, employee handbook, and any standalone invention assignment agreement you signed. Carefully read the exact language—Louisiana law requires the assignment clause to be conspicuous, meaning it must stand out visually or be presented separately. If the clause is buried in dense fine print or mixed with other terms without clear notice, this is a violation of § 9:2722. Determine whether the agreement claims all inventions, or only those related to the employer's business or made during work hours. Check the date you received this document—it must have been provided before or at hire.

Step 3: Attempt Internal Resolution. Contact your employer's human resources or legal department in writing (email is acceptable, but certified mail is better). Explain that you believe the invention is your personal property under Louisiana Revised Statutes § 9:2723 because it was developed on your personal time with personal resources and does not relate to the employer's business. Cite the specific statute. State the facts: when you developed it, where, what tools you used, and why it does not fall within your job scope. Request written acknowledgment that the company will not claim ownership or seek a patent in its name. Keep a copy of your communication.

Step 4: File a Complaint with the Louisiana Department of Labor. If the employer does not respond favorably or claims the invention anyway, file a civil complaint with the Louisiana Department of Labor's Wage and Hour Division, which handles employment contract disputes. Provide a copy of your employment agreement, your invention assignment agreement (if any), your documentation of the invention's development, and your written communication to the employer. The agency may investigate whether the employer's claim violates § 9:2721–9:2723. This step is not mandatory but creates an official record. Include: your name, address, and phone number; the employer's name and address; the date of hire; a description of the invention; and the dates and circumstances of its development.

Step 5: Consult an Employment Attorney. Because invention disputes often involve intellectual property law, contract interpretation, and potential trade secret claims, consult a Louisiana employment attorney or intellectual property attorney. An attorney can review your specific agreement, advise whether the employer's claim is enforceable under Louisiana law, and discuss whether filing a lawsuit for declaratory judgment (asking a court to declare you the owner) is prudent. If the invention has significant commercial value, the cost of legal advice is justified. Many attorneys offer free initial consultations. You can also contact the Louisiana State Bar Association's Lawyer Referral Service at (800) 947-6418.

Relevant Agency

Louisiana Department of Labor, Wage and Hour Division

https://www.louisianaworks.net/

(225) 342-3111

If you need to understand whether your invention belongs to you or your employer, consult a Louisiana employment attorney to review your specific agreement and circumstances.

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Frequently Asked Questions

I signed an employment agreement claiming my employer owns all inventions I create. Is this enforceable in Louisiana?

Not necessarily. Even if you signed such an agreement, Louisiana Revised Statutes § 9:2721 limits employer claims to inventions developed during work hours using company resources and directly related to the employer's business. Under § 9:2723, you cannot be forced to assign inventions you developed entirely on your own time with your own resources unless they relate to the employer's anticipated business. The key question is whether the employer's clause was presented conspicuously in writing—if it was buried in fine print or presented without clear notice, it may not be enforceable. Consult an attorney to review your specific agreement, as the enforceability depends on the exact language and how it was presented to you.

I created a software invention on my own laptop at home after work hours. Can my employer claim ownership?

Generally, no—Louisiana law strongly protects your ownership. Under § 9:2723, you retain ownership of inventions developed entirely on your own time with your own resources. However, there are two exceptions: (1) if the software relates directly to the employer's existing or demonstrably anticipated business at the time you conceived it, and (2) if the software results from work you performed for your employer (for example, if you were assigned to solve a specific problem and you created this as the solution). If either exception applies, the employer may have a claim. The safest approach is to ensure your invention is completely unrelated to your employer's business, and to document that you created it entirely outside work. If you used any employer intellectual property, trade secrets, or code libraries, the employer's claim becomes stronger.

What happens if I refuse to sign an invention assignment agreement?

In Louisiana, your refusal to sign an invention assignment agreement cannot be grounds for termination, demotion, or other adverse employment action—provided the agreement would have violated your rights under §§ 9:2721–9:2723. However, if the agreement is legal and enforceable, an employer may refuse to hire you or may condition employment on signing. If you are already employed and are asked to sign an agreement that claims ownership of inventions you developed before hire, or inventions you will develop on personal time, you should consult an attorney before signing. Louisiana's at-will employment rules generally allow employers to set conditions of employment, but cannot enforce conditions that violate state law. Document any pressure from your employer regarding the refusal to sign, in case retaliation occurs later.

I left my job three months ago and just finished developing an invention at home. Does my former employer have any claim?

No. Louisiana Revised Statutes § 9:2721 and § 9:2723 apply only to inventions developed during the employment relationship. Once your employment ends, you owe your former employer no obligation to assign inventions, regardless of whether they relate to the employer's business or field. Your former employer's only potential leverage would be if the invention is based on trade secrets or confidential information you obtained during employment—in that case, the employer could pursue a trade secret misappropriation claim under the Louisiana Uniform Trade Secrets Act, but not an invention assignment claim. To protect yourself, avoid using or referencing trade secrets or proprietary information your former employer gave you.

My employer says they own my invention because I did some of the work during lunch breaks at the office. Is that enough?

Possibly, but Louisiana law requires that the invention be developed 'entirely on the employer's time' using 'the employer's equipment, supplies, facilities, or trade secrets' for the employer to claim ownership under § 9:2721. If you did only some of the work during lunch breaks and the majority on your own time with your own resources, the employer's claim is weaker. Courts have held that 'entirely on the employer's time' means substantially all the work was done during paid work hours, not just incidental portions. Additionally, if you did use employer equipment during those lunch breaks without authorization, the employer's claim strengthens. Document how much work you did on company time versus personal time, and whether you had permission to use company equipment. If the work was primarily personal, argue that the incidental use of company time or facilities does not give the employer ownership of the entire invention under Louisiana's strict standard.

Related Topics in Louisiana

See invention assignment laws in every state →

Sources & References

  • Louisiana Revised Statutes § 9:2721Limits employer claims to work-related inventions made during employment
  • Louisiana Revised Statutes § 9:2722Requires written notice of invention assignment obligations to employees
  • Louisiana Revised Statutes § 9:2723Protects employee rights to inventions created outside scope of employment

Informational only. Not legal advice. Laws change — always verify with a licensed attorney.

Editorial standards: This guide is reviewed against primary government sources and cites 3 statutes. Last reviewed September 2026. Scheduled for re-verification by September 2027.

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