How to provide evidence for protecting trade secrets? Three key points of enterprise evidence chain

Trade secrets are the core intangible assets of enterprises, often determining market competitiveness and survival space. In reality, many companies remain on paper due to confidentiality measures, and lack sufficient evidence to protect their rights, resulting in no resolution in the end. Shenzhen lawyer Liu Yu has worked in the court for many years, presiding over hundreds of complex cases. After becoming a lawyer, he mainly handled intellectual property affairs for enterprises. His basic judgment is that trade secret protection should not only be a "spear" after an incident, but also a "shield" before an incident occurs.

1、 Three thresholds for recognition

According to the Anti Unfair Competition Law, trade secrets need to meet three conditions simultaneously: not being known to the public, having commercial value, and the right holder taking corresponding confidentiality measures. Three conditions are indispensable, and the third one is the most easily broken down link in practice.

Many companies think that signing a confidentiality agreement means everything is fine. But the court's review of whether the confidentiality measures are "reasonable" depends on their specificity and enforceability: has the scope of confidentiality been defined? Is the file graded? Is there any control over permissions? Can contact records be checked? Only a general agreement makes it difficult to prove that the rights holder has really taken measures.

So the confidentiality obligation should fall into the details: which information is confidential, who is responsible for safekeeping, who can access it, whether there are any traces of copying and exporting, and how to hand it over when leaving the company. Write these contents into the system and have employees sign for them to form usable evidence.

2、 Seven parts defense, three parts backup

Lawyer Liu Yu often summarizes it in one sentence: Seven parts defense, three parts preparation, and fast in wartime. Pre prevention and control is the foundation, which can be built from four directions:

• System:Clearly define the scope and storage process of secrets, designate responsible persons, and conduct regular inspections.
• Contract:The confidentiality agreement and non compete agreement shall be signed separately, and the scope and compensation of non compete agreements shall be stipulated in accordance with the law.
• Technology:File encryption, permission grading, export traceability, and separate management of classified areas.
• Personnel:Onboarding training, on-the-job reminders, confidentiality clearance for resignations, and a handover checklist for important positions.

Preparation should be made in advance for post event rights protection: daily archiving of confidential documents, backup of electronic data, and notarization and evidence collection at key nodes (such as core personnel resigning); By understanding the scope of judicial appraisal institutions and industry experts in advance, materials can be quickly organized in case of accidents. There is only one standard for prevention and control measures - they can be implemented and documented.

3、 Three difficulties in safeguarding rights

The difficulty of trade secret cases, especially business secrets (such as customer lists), lies in three aspects:

One is to provide evidence. To prove that the information is not publicly known, it is also necessary to prove the chain of "contact+substantial similarity", where one link is missing and it breaks. The second is loss calculation. The law stipulates multiple calculation methods, but in practical application, there is often a lack of available financial data. The third is the connection between criminal law and civil law. Criminal filing has a threshold, and civil procedures often lack investigative methods, resulting in a disconnect between the two lines.

Lawyer Liu Yu has represented a confidential business case in Changzhou: a customer's sales team left and self operated a competitor, taking away the customer list and pricing strategy. The team's approach is to dismantle secret points, conduct electronic data forensic appraisal, notarize evidence collection, and first build a complete evidence chain; The program adopts a "criminal civilian linkage" approach - first reporting a criminal case, using investigative methods to fix evidence, and then filing a civil lawsuit to claim compensation after the criminal judgment. The compensation ultimately supported by the court is higher than the criminal determination amount.

The value of this type of combination lies in solving both the problems of "inability to prove" and "inability to calculate losses" together. In recent years, the judicial protection of trade secrets has also been strengthened. The Supreme People's Court's judgment of 198 million yuan in damages in the Meiya Optoelectronics case in 2026 is a signal.

4、 Four practical suggestions

• Establish dynamic compliance:Regularly evaluate confidential information and adjust confidentiality measures according to business changes, so as not to let the system from three years ago govern today's business.
• Training should be implemented on the job:Using real cases in this industry to explain the consequences is more effective than reciting legal principles.
• Make good use of programming tools:The Anti Unfair Competition Law has corresponding arrangements in terms of burden of proof and compensation, and timely claims are made when conditions are met.
• Introducing lawyers in advance:The three stages of system design, contract drafting, and evidence fixation require the participation of lawyers to avoid rework later on.

A reminder to businesses is that trade secrets are not just technical drawings, but also include customer data, pricing systems, and supply chain information. In a fiercely competitive industry, a system that can prevent, retain evidence, and advocate is much more cost-effective than post remedy.

Guangdong Zhiming Law Firm handles intellectual property related affairs and can provide compliance analysis and rights protection solutions for enterprises' trade secrets. If needed, you can communicate at Room 1802, Building A, Xintian Century Business Center, Shixia North Second Street, Futian District, Shenzhen. Telephone: 0755-25986969.