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Invention Assignment Laws in New Jersey: Who Owns What You Create

Last reviewed: September 2026

Quick Answer

In New Jersey, your employer does not automatically own inventions you create. Under N.J.S.A. § 34:1B-1, employers can only claim inventions developed using company time, equipment, or resources that relate to the employer's business—and only with a written agreement signed before or at hire. Inventions created on your own time, without company resources, and unrelated to the company's business remain your property, even if you have an assignment agreement. New Jersey courts narrowly construe these clauses against employers.

Key Facts

  • •New Jersey employers cannot claim inventions created on employee's own time without a written agreement.
  • •Employers can only own work-related inventions developed using company resources.
  • •New Jersey Uniform Trade Secrets Act protects employee inventions and trade secrets.
  • •Employees must receive written notice of assignment clauses before or at hire.
  • •Non-compete and invention assignment agreements are narrowly construed against employers in New Jersey.

Federal Law: The Baseline

Federal law does not directly regulate invention assignment. The federal Defend Trade Secrets Act (18 U.S.C. § 1836) protects trade secrets and inventions from misappropriation but does not define ownership between employer and employee. Instead, invention ownership is governed by state law contract and property principles. The Uniform Trade Secrets Act (adopted federally as the DTSA) allows employers to protect trade secrets they own but does not automatically grant ownership of inventions created by employees.

Federal patent law (35 U.S.C.) provides that inventors are presumed to own their inventions unless they assign them through a written contract. The USPTO does not enforce ownership disputes; that is left to state law and courts. Federal copyright law similarly presumes employee authorship unless a written work-for-hire agreement exists. Enforcement of invention assignment disputes typically occurs through state contract law, not federal agencies. The EEOC and DOL do not regulate invention ownership.

New Jersey Law: What's Different

New Jersey has one of the most employee-protective invention assignment regimes in the United States. Under N.J.S.A. § 34:1B-1, an employer can claim ownership of an employee invention only if: (1) the invention was developed entirely on the employer's time; (2) the invention was developed using the employer's equipment, supplies, facilities, or trade secrets; or (3) the invention relates directly to the employer's existing or demonstrably anticipated business or research.

Crucially, N.J.S.A. § 34:1B-2 provides an absolute protection: an employer cannot claim ownership of an invention developed by an employee entirely on the employee's own time, without using any company equipment or resources, unless the invention directly relates to the employer's business or is a direct result of work performed for the employer.

New Jersey also requires that employers provide written notice of invention assignment clauses before hiring or at the time of hire. N.J.S.A. § 34:2C-2.1 mandates that any non-compete, non-solicitation, or invention assignment agreement must be presented to the employee in writing, and the employee must be notified of the terms. This is a critical distinction from federal law, which imposes no such notice requirement.

New Jersey courts strictly construe invention assignment agreements against employers (the drafter). The state recognizes that these agreements are contracts of adhesion and interprets ambiguities in favor of the employee. Unlike federal law, which defers to written agreements, New Jersey imposes a reasonableness standard: was the invention truly work-related? Was company property involved? This is significantly stronger than federal default rules.

Additionally, New Jersey recognizes a doctrine of inevitable disclosure, but it is narrower than in other jurisdictions. An employee cannot be enjoined from using general skills and knowledge learned on the job, even if those skills benefit a competitor. Trade secrets and confidential information are protected, but routine know-how is not.

Key Numbers & Thresholds

Written invention assignment agreement must be provided before hire or at time of hire to be enforceable. Invention must be created entirely on company time, or using company resources, or directly related to employer's business to be claimed by employer. Statute of limitations for breach of contract under New Jersey law is generally 6 years from the date of breach. If invention qualifies as a trade secret under N.J.S.A. § 56:5-3, the statute of limitations is 3 years from discovery of misappropriation.

Exceptions & Special Cases

A critical exception under N.J.S.A. § 34:1B-2 exists: even with a written assignment agreement, employers cannot claim inventions created entirely on the employee's own time, without company resources, unless the invention relates directly to the employer's existing or demonstrably anticipated business. This is an absolute bar, not subject to waiver.

Employers cannot claim ownership of inventions that are independently developed by the employee (developed without use of company information or resources). Courts examine whether the employee actually used company resources or confidential information in developing the invention; if not, the invention remains the employee's property regardless of what the contract states.

Inventions developed after the employment relationship ends are not owned by the former employer, even if they relate to the business, unless the employee used trade secrets or confidential information obtained during employment. New Jersey does not recognize a broad "inevitable disclosure" doctrine that would prevent an employee from working in a field or using general skills learned on the job.

If an invention assignment agreement is presented to an employee after hire without consideration (additional pay, promotion, etc.), New Jersey courts may enforce it narrowly or find it unenforceable as lacking consideration. Oral agreements are generally not enforceable; the agreement must be in writing.

Union employees may have different protections under collective bargaining agreements that supersede or modify statutory invention assignment rules. Federal employees are covered by different law (37 U.S.C. § 201) and are not subject to this state statute.

Employers cannot prevent an employee from disclosing an invention to the Patent Office or government agencies, even if they claim ownership. 35 U.S.C. § 181 protects disclosures to government entities, and New Jersey recognizes this federal protection. Additionally, employers cannot use invention assignment clauses to prevent employees from inventing during free time or to capture inventions outside the scope of employment.

What to Do If Your Rights Are Violated

Step 1: Document the Invention and Development. Keep detailed records of when the invention was created, what time was spent on it, what resources were used (company or personal), and whether it relates to your employer's business. Save emails, notes, lab notebooks, sketches, or code repositories showing the date and context of creation. Document the job description and scope of your role to show whether the invention falls within assigned duties. Take screenshots or save documents proving you created the invention on your own time or without company resources. If the employer signed an invention assignment agreement, obtain a copy and review its exact language.

Step 2: Submit an Internal Complaint or Demand. Write a formal letter to your employer's HR or legal department explaining that you do not believe the invention is subject to the assignment agreement because: (a) it was created on your own time; (b) you did not use company resources; and/or (c) it is not related to the company's business. Cite N.J.S.A. § 34:1B-1 and § 34:1B-2. Request that the employer acknowledge your ownership in writing within 30 days. Keep a copy of this letter and send it via email (with read receipt) or certified mail. Do not ignore this step; it creates a record and may resolve the dispute without litigation.

Step 3: File a Demand with the Patent Office (if applicable). If you have filed or plan to file a patent application, ensure your name appears as the inventor on the Patent Office records. If the employer has filed a patent listing themselves as inventor (when you dispute this), you can file a Correction of Inventorship with the USPTO (Form SB/44) or contact the patent attorney involved. The USPTO does not resolve ownership disputes but will correct inventorship records if you provide evidence. If the employer filed a patent without your knowledge and knowledge, this may also constitute theft of trade secrets or conversion, giving you additional legal claims.

Step 4: File a Complaint with the New Jersey Department of Labor. While no specific state agency enforces invention assignment statutes directly, you can file a retaliation complaint with the New Jersey Public Employees' Occupational Safety and Health (PEOSH) Program if your employer retaliates against you for asserting your invention ownership. However, this applies mainly to retaliation. For a direct invention ownership dispute, you must pursue a civil action. Contact the New Jersey Department of Labor at (609) 292-2575 or visit www.nj.gov/labor. Explain that the employer is claiming ownership of an invention in violation of N.J.S.A. § 34:1B-1, and ask whether they can investigate or mediate. They may refer you to civil remedies.

Step 5: Consult an Attorney and Pursue Civil Action. Contact a New Jersey employment law attorney or intellectual property attorney experienced in invention assignment disputes. Most disputes are resolved through civil litigation in state court, not administrative agencies. Your attorney will review the assignment agreement, the invention's nature, your role, and the evidence of independent creation. They will send a cease-and-desist letter to the employer demanding acknowledgment of your ownership and cessation of any use of the invention without permission. If the employer does not respond within 30-60 days, your attorney will file a civil lawsuit in New Jersey Superior Court seeking: (a) declaratory judgment that you own the invention; (b) injunctive relief preventing the employer from claiming ownership, patenting the invention, or licensing it; and (c) damages if the employer has profited from the invention or caused you economic harm. The litigation process typically takes 1-2 years but can be accelerated if both parties agree to expedited discovery.

Relevant Agency

New Jersey Department of Labor and Workforce Development

https://www.nj.gov/labor

(609) 292-2575

If you need guidance on protecting your invention rights, consider consulting with a New Jersey employment law or intellectual property attorney who can review your agreement and advise on the best course of action.

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Frequently Asked Questions

I created an invention on my own time at home, but my employer claims they own it because I signed an invention assignment agreement. Do they?

No. Under N.J.S.A. § 34:1B-2, New Jersey employers cannot claim ownership of inventions created entirely on the employee's own time, without using any company equipment, facilities, or trade secrets—even with a written agreement. This is an absolute protection. The only exception is if the invention directly relates to the employer's existing or demonstrably anticipated business and was developed as a direct result of work performed for the employer. However, merely signing an agreement does not waive this right; the invention must fall into one of the narrow categories in § 34:1B-1 to be owned by the employer. If you have evidence that you developed the invention independently at home using your own resources, you retain ownership regardless of the agreement language. Consult an attorney to review your specific agreement and facts, but the statute strongly favors you.

My employer sent me an invention assignment agreement to sign after I was already hired, without offering me a raise or promotion. Is it enforceable in New Jersey?

This is a gray area in New Jersey law. Courts generally require that contracts be supported by consideration (something of value in exchange). If you signed an assignment agreement after hire with no additional compensation, a court might find it lacks sufficient consideration and is therefore unenforceable. However, some New Jersey courts have held that continued employment can constitute consideration if you sign the agreement within a reasonable time of hire. The safer approach is to refuse to sign or demand something of value (bonus, promotion, stock options, etc.) in exchange for the agreement. If you already signed without consideration, document that fact and consult an attorney. Do not assume the agreement is automatically binding. The burden is on the employer to prove the agreement is valid and enforceable under New Jersey contract law.

I work as a software engineer, and my job description says I develop software for the company. I created a mobile app on weekends using my own laptop that solves a problem in the company's industry. Can the company claim ownership?

This is a close call under New Jersey law and depends on the specific facts. The analysis under N.J.S.A. § 34:1B-1 is whether the app: (1) was developed during company time; (2) used company resources; or (3) directly relates to the company's existing or demonstrably anticipated business and resulted from work performed for the company. If you created it entirely on weekends on your personal laptop without using company code, databases, or trade secrets, you have a strong argument that it is your property. However, the second factor—direct relation to the company's business—is more debatable. If the app solves a problem the company is actively addressing or planning to address, a court might find it is within the scope of the company's business. The safest approach is to disclose the app to the company in writing before or immediately upon creation, explain that it was developed independently on your own time, and request written acknowledgment that the company does not claim ownership. If the company disputes this, consult an attorney with intellectual property experience to analyze the specific facts against § 34:1B-1.

My former employer is claiming they own a patent for an invention I created after I left the company. I did not work on it while employed. Can they claim it?

Generally, no. Under New Jersey law, employers cannot claim ownership of inventions created after the employment relationship ends unless the employee used trade secrets or confidential information obtained during employment to develop the invention. If you developed the invention independently after leaving the company using only public information or your own general knowledge, it is your property. However, if the employer can prove that you used confidential information, trade secrets, or technical data obtained during employment, they may have a claim based on misappropriation of trade secrets under N.J.S.A. § 56:5-3, not invention assignment. Additionally, check whether you signed a non-solicitation, non-compete, or invention assignment agreement that explicitly extends to post-employment inventions. Some agreements do claim inventions created within a period after termination (e.g., 12 months). Such clauses are narrowly construed in New Jersey, but they are enforceable if reasonable. Consult an attorney if the employer threatens to claim ownership; this is a complex fact-specific analysis.

I want to patent my invention, but my employer claims they own it. How long do I have to resolve this dispute before the patent application becomes invalid?

The timing of patent filing is critical. Under federal patent law (35 U.S.C. § 102), if you file a patent application within one year of any public disclosure, offer for sale, or publication of the invention, you retain your priority date in the United States. However, in many other countries, any prior disclosure bars patentability. In New Jersey, the statute of limitations for a breach of contract claim (which would include a dispute over an invention assignment agreement) is generally 6 years from the date of the alleged breach. But do not wait 6 years to file your patent; the longer you wait, the more evidence of your independent development is needed.

If your employer has already filed a patent listing themselves as the inventor when you claim to be the true inventor, the matter is more urgent. You have one year from the patent grant date to file a Correction of Inventorship with the USPTO, but this is a complex process. Immediately consult a patent attorney if the employer files a patent claiming your invention. They can file a protest with the Patent Office, demand a correction of inventorship, or file a lawsuit in federal court to prevent the patent from issuing in the employer's name. Do not delay; patent disputes are time-sensitive.

Related Topics in New Jersey

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Sources & References

  • New Jersey Statutes Annotated § 34:1B-1 et seq. — Governs assignment of inventions by employees to employers
  • New Jersey Statutes Annotated § 56:5-3 — Uniform Trade Secrets Act protections for trade secrets and inventions
  • New Jersey Statutes Annotated § 34:2C-2.1 — Requires written notice of non-compete and invention assignment terms
  • New Jersey common law doctrine of reasonable expectation — Limits invention assignment to work-related creations using company resources

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 4 statutes. Last reviewed September 2026. Scheduled for re-verification by September 2027.

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