Customer lists can reflect years of sales work. When a former worker takes that data, your business could lose revenue and its competitive edge.
If you own a business, knowing when the law protects this data can help you respond appropriately. In Ohio, not every customer list qualifies as a trade secret. A private list may qualify when its secrecy gives it economic value.
A lawsuit can address misuse of private business data
You may sue a former employee who improperly obtains or uses a customer list that qualifies as a trade secret. You can also have a claim if the worker broke an enforceable nondisclosure or confidentiality agreement. The type of claim often depends on how the former employee obtained or used the information.
When that conduct involves secret business data, the Ohio Uniform Trade Secrets Act (OUTSA) may provide protection against improper access, disclosure or use. Under the statutory trade secret definition, the information must have independent economic value because others do not know it and cannot readily obtain it lawfully.
What your business may need to prove
Protection often depends on content, not the label “confidential.” A public directory may not qualify. Buying records, customer preferences and contact details can support a stronger claim if they help a rival target sales.
Economic value alone does not show that a former worker misused a trade secret. Your business would generally need evidence of three points:
- The information was not readily available. Show that competitors could not recreate it through lawful research.
- Your company took reasonable precautions. Passwords, access limits and confidentiality terms may show efforts to preserve secrecy.
- The former worker obtained or used it improperly. Downloads, forwarded emails or detailed client pitches can help show misuse, unauthorized acquisition or disclosure.
This evidence can influence the court orders and financial recovery available to your company.
Why a quick response can help protect your business
A court can issue an injunction to stop actual or threatened misuse. It could also require steps that protect the secret. Your company may recover its actual losses and any unfair gain that the loss award does not already cover.
If the misappropriation was willful and malicious, a court may add exemplary damages of up to three times the underlying damages award. An attorney experienced in complex intellectual property disputes may review your records, seek an urgent court order and identify the claims supported by your evidence.

