What to Do When Your Business Partner Steals Trade Secrets

Published: October 2026

The partner who had access to everything just left, and your customer list, pricing formulas, and vendor terms appear to have walked out with them. Now a competing operation is calling your accounts with numbers that look suspiciously like yours.

When a business partner steals trade secrets, Ohio gives you strong tools, including injunctions and enhanced damages. Those tools work best when you move fast and preserve evidence before anyone realizes you noticed.

What Counts as a Trade Secret in Ohio?

Not every piece of internal information qualifies. Ohio follows the Uniform Trade Secrets Act, codified at Sections 1333.61 through 1333.69 of the Revised Code, and protection depends on two things: the information must have independent economic value because it is not generally known, and you must have taken steps to keep it secret.

Information that often qualifies includes:

• Customer lists with pricing, purchase history, and contact details;
• Cost structures, margin data, and bidding formulas;
• Proprietary processes, recipes, designs, and source code;
• Vendor terms and supplier agreements not available publicly; and
• Business plans, forecasts, and marketing strategies developed internally.

The secrecy requirement does real work. If you emailed the customer list around without restriction, posted margins in a shared folder open to everyone, or never used confidentiality agreements, then a court will likely find that the information was never a trade secret at all, and is therefore not protected.

What Does Misappropriation Mean Under Ohio Law?

Ohio Revised Code § 1333.61 defines the terms that drive these cases. Improper means includes, but is not limited to: theft, bribery, misrepresentation, breach or inducement of a breach of a duty to maintain secrecy, and espionage through electronic or other means.

Misappropriation covers acquiring a trade secret when you know or have reason to know it was obtained by improper means. It also covers disclosing or using a trade secret without consent when the person used improper means to learn it, or knew it came from someone who owed a duty to keep it secret.

That second branch matters in partner disputes. A departing partner who had legitimate access does not escape liability, because the violation lies in the later use or disclosure rather than in how they first obtained the information.

What Should You Do First?

The first days shape the case. A deliberate sequence protects you:

1. Before this issue arises, have all with access sign a confidentiality agreement, acknowledging the trade secrets;
2. Keep these secrets locked, whether physically in a safe or encrypted and password-protected in the cloud or on your server;
3. Preserve everything before confronting anyone, including email, messaging, file access logs, and cloud storage history;
4. Suspend any automatic deletion policies and document that you did so;
5. Have an IT professional image relevant devices and accounts rather than poking through them yourself;
6. Pull records showing what was downloaded or forwarded, and when;
7. Review the operating agreement, employment terms, and any confidentiality or non-solicitation provisions; and,
8. Contact a business litigation attorney before sending any accusation.

The temptation to confront immediately is strong. Resist it. Advance warning gives the other side time to wipe devices, and spoliation is much harder to prove than to prevent.

What Remedies Are Available in Ohio?

Ohio’s statute provides a meaningful set of remedies, which is why these claims carry leverage.

Courts may issue injunctions to stop actual or threatened misappropriation, which is often the most urgent relief because it can halt the use of your information while the case proceeds. In unusual situations where an injunction would be inequitable, a court may instead condition future use on payment of a royalty.

On damages, Ohio Revised Code § 1333.63 allows recovery of both actual loss and the unjust enrichment the misappropriation produced, to the extent that enrichment is not already counted in the actual loss. As an alternative measure, damages may be calculated as a royalty that is equitable under the circumstances.

Two provisions increase the stakes considerably:

• Where willful and malicious misappropriation exists, then a court may award punitive or exemplary damages up to three times the compensatory award; and,
• A court may award attorney fees where misappropriation was willful and malicious, or where a claim or a motion regarding an injunction was made in bad faith.

That fee provision cuts both directions. A weak claim filed in bad faith can leave you paying the other side.

Does a Partner Owe You More Than the Statute Requires?

Often, yes. A business partner is not a stranger who stole a file. Under Ohio Revised Code § 1706.31, members of a member-managed Ohio LLC owe duties of loyalty and care, along with an obligation of good faith and fair dealing. Taking company information to build a competing venture generally breaches that loyalty duty.

One limitation deserves attention. Ohio’s trade secret statute displaces conflicting tort and restitution claims that cover the same misappropriation, so you cannot simply stack conversion and unjust enrichment claims on identical facts. Contract claims and fiduciary duty claims are typically framed carefully to stand on their own footing.

How Long Do You Have to Sue?

Ohio allows four years for a misappropriation claim, measured from when the misappropriation was discovered or reasonably should have been discovered, whichever comes first. The statute also treats a continuing misappropriation as a single claim, so an ongoing pattern does not restart the clock each time the information is used again.

That single-claim rule is the trap. Owners who wait, hoping the problem resolves itself, sometimes discover the deadline ran from the first discovery rather than from the most recent misuse.

How Do You Protect Trade Secrets Going Forward?

Whatever happens with this dispute, the protections you put in place now determine whether the next claim is winnable:

• Use written confidentiality agreements with partners, employees, and contractors;
• Limit access to sensitive information based on actual need;
• Mark confidential materials and keep them in restricted systems and physically locked;
• Maintain offboarding procedures that revoke access and document returned property; and,
• Address confidentiality, competition, and ownership of work product directly in the operating agreement.

Courts look for evidence that you treated the information as secret, both at the beginning and as a going concern. You don’t want a court finding you waived the trade secrets’ confidential nature by being lax. Those measures are both practical protection and proof.

Getting Help With Trade Secret Theft in Ohio

When a business partner steals trade secrets, the strength of your case depends on whether the information qualifies for protection, how clearly you can trace what was taken, and how quickly you acted. Ohio’s remedies are substantial, including injunctions, enhanced damages, and attorney fees, but they reward owners who preserved evidence early.

Cavell Law represents Ohio businesses in partnership disputes and claims involving confidential information.

If a partner has taken what your business depends on, then you can review the firm’s business litigation and contract services, or contact Cavell Law to discuss what was taken.