Trade Secrets and Confidential Information under Dutch law

Published on 19 October 2025 · Last updated 25 October 2026

Under Dutch law, a trade secret (bedrijfsgeheim) is information that is secret, has commercial value because it is secret, and is subject to reasonable steps to keep it secret (Article 1 Dutch Trade Secrets Protection Act). No registration is needed. Other confidential information is protected mainly by contract. Remedies include an injunction and damages (Articles 6 and 8). Our team also advises on trade name Dutch.

What qualifies as a trade secret under Dutch law?

A trade secret is confidential information that gives your business a commercial advantage. The Dutch Trade Secrets Protection Act (Wet bescherming bedrijfsgeheimen, Wbb) sets three conditions: the information is secret, it has commercial value because it is secret, and the person lawfully in control of it has subjected it to reasonable steps, under the circumstances, to keep it secret (Article 1 Wbb). The Act dates from 17 October 2018 and implements Directive (EU) 2016/943.

We regularly assist clients with information communication technology law.

For a related topic, see Trade name Infringement in the Netherlands. Trade secrets can cover many types of information:

Recipes and chemical formulas that competitors cannot reverse-engineer
Manufacturing methods and production processes within your company walls
Customer databases with commercial contact details
Research data from innovation trajectories
Software code and algorithms
Contract terms and pricing strategies
Technical specifications of machinery

Companies in Amsterdam and the Netherlands use trade secrets for protecting data models, developing new production lines, or improving logistical processes. An industrial coatings manufacturer protects its paint composition, while a software company shields its algorithms.

What conditions must your trade secret fulfill according to Dutch legislation?

Your information qualifies as a trade secret when it meets three cumulative requirements. First, the information must be secret: as a body or in the precise configuration and assembly of its components, it is not generally known among or readily accessible to persons within the circles that normally deal with that kind of information (Article 1(a) Wbb).

Information you publish yourself on your website, in trade journals or at conferences is, as a rule, no longer secret. A particular combination of elements that are each publicly known can still be secret.

Second, the information must have commercial value because it is secret (Article 1(b) Wbb). That value exists as long as competitors do not have the knowledge. For example: your own assembly process cuts production time considerably, so you can offer lower prices.

Third, you must take reasonable steps, under the circumstances, to keep the information secret (Article 1(c) Wbb). Examples:

Physical security through locked archives
Classification of documents as “confidential” or “top secret”
ICT protection with passwords and encryption
Access controls to sensitive areas
Training of personnel regarding confidential information

The Act does not prescribe contracts, but contractual arrangements are often an important part of reasonable steps. Confidentiality clauses in employment contracts protect your knowledge when employees leave. Non-disclosure agreements (NDAs) with business partners record that external parties must respect your secrets.

You need not register trade secrets: protection exists once the three conditions are met. An i-DEPOT at the Benelux Office for Intellectual Property (BOIP) can still be useful. It provides proof that your documents existed on the date the BOIP received them, and the BOIP keeps them under strict secrecy (Article 4.4bis Benelux Convention on Intellectual Property). An i-DEPOT does not give you an exclusive right.

How do you implement effective protection measures under Dutch law?

The court assesses whether your steps were reasonable under the circumstances (Article 1(c) Wbb). Without demonstrable steps, valuable information is not a trade secret within the meaning of the Act. A structured approach therefore pays off.

Start with classification: decide which information is confidential and who needs access to it for their job.

Furthermore, protection requires technical security layers. Install firewalls that block external access. Encrypt confidential files on servers and computers. Restrict physical access to R&D spaces with badges or biometric scanners. Mark documents clearly with confidentiality labels.

Inform employees about their confidentiality obligations, for example in training sessions on which information is confidential. Awareness within your organisation largely determines whether secrets really stay secret.

Contractual measures form the legal foundation:

Confidentiality clause in employment agreement
Non-disclosure agreement with suppliers
Secrecy provision in collaboration contracts
Restricted use clauses limiting usage
Penalty clauses for breach of confidentiality

Departing employees in particular pose a risk to your trade secrets. Employment contracts therefore often contain confidentiality provisions that also apply after termination. A non-compete clause can also temporarily prevent former employees from working for a competitor. Such a clause must be agreed in writing with an adult employee; in a fixed-term contract it is only valid with a written statement of the compelling business or service interests that make it necessary (Article 7:653 Dutch Civil Code, DCC).

When does someone infringe your trade secret in the Dutch jurisdiction?

Not every use of your information without permission is an infringement. Article 2 of the Dutch Trade Secrets Protection Act sets out when acquiring, using or disclosing a trade secret is unlawful. A person who obtains a trade secret through someone else also acts unlawfully if they knew, or ought to have known under the circumstances, that this other person was using or disclosing it unlawfully (Article 2(3) Wbb). You can take legal action against an infringer.

Unlawful acts include:

Acquisition through unauthorised access to, or appropriation or copying of, documents or files, for example by theft or hacking (Article 2(1)(a))
Use or disclosure in breach of a confidentiality agreement, NDA or use restriction (Article 2(2)(b) and (c))
Use of your process by a competitor who acquired the secret unlawfully, or who knew or ought to have known that it came from an infringer (Article 2(2)(a) and 2(3))
Disclosure to third parties without permission by someone who acquired the secret unlawfully or was bound to confidentiality
Producing, offering, importing or storing infringing goods by someone who knew or ought to have known that the secret was being used unlawfully (Article 2(4))

For example: an employee copies your customer database without permission before leaving for a competitor. The competitor then uses the list to approach customers. The employee acquires and uses the file unlawfully. The competitor acts unlawfully if it knew or, under the circumstances, ought to have known that the file was obtained in that way (Article 2(3) Wbb). You still have to prove that the customer database met the three statutory conditions.

Important: not every acquisition is unlawful. A person who discovers or creates the information independently acts lawfully. The same applies to someone who observes, studies, disassembles or tests a product that has been made available to the public or that they lawfully possess (reverse engineering), unless they are bound by a valid duty to limit the acquisition of the trade secret (Article 3(1)(a) and (b) Wbb). The court also rejects a claim if, for example, the secret was revealed to expose misconduct or illegal activity in order to protect the public interest (Article 4 Wbb). That is why companies sometimes protect key innovations by a patent instead of secrecy.

What legal remedies does Dutch law provide for infringement?

The Act provides provisional measures, measures on the merits and damages. In urgent cases, the preliminary relief judge (voorzieningenrechter) can, among other things, order a provisional injunction (Article 5 Wbb). In proceedings on the merits, the court can order the measures of Article 6 Wbb. The court takes into account the specific circumstances of the case, such as the value of the secret, the steps you took to protect it, the conduct of the infringer and the interests of the parties and third parties (Article 7(1) Wbb).

Available remedies under Articles 5, 6 and 8 of the Trade Secrets Protection Act:

Prohibition of disclosure – The infringer may not further disseminate your secret
Prohibition of use – The competitor must stop applying your process
Production ban – The manufacturer may no longer produce, offer or market infringing goods
Seizure or surrender – With leave of the court, seizure of the allegedly infringing goods, or a claim for their surrender (Article 5(2))
Recall from the market – Infringing goods are recalled from the market (Article 6(1)(c))
Destruction – The court orders destruction of infringing goods and of documents or files containing your secret, or their delivery to you, as a rule at the infringer’s expense (Article 6(1)(e) and (f), 6(2))
Damages – If the infringer knew or ought to have known that it was acting unlawfully; where appropriate as a lump sum (Article 8)

On your claim, the court can also order appropriate measures, at the infringer’s expense, to disseminate information about the judgment (Article 9 Wbb). It weighs, among other things, the value of the secret, the conduct of the infringer, the likelihood of further unlawful use and, if a natural person can be identified, the possible harm to that person’s privacy and reputation.

Lawyers in Amsterdam often advise collecting evidence before proceeding to court. Document when you developed the trade secret. Preserve emails where parties gained access to confidential information. File confidentiality agreements with contract dossiers. In the end, the quality of your evidence determines whether the District Court grants your claim.

Action plan when suspecting infringement:

Collect evidence of your trade secret’s existence
Document which measures you took for maintaining secrecy
Prove the infringer acted unlawfully
Calculate damages suffered or lost profits
Engage legal adviser in Amsterdam for proceedings
Consider interim injunction for swift preliminary relief
Initiate main proceedings for definitive judgment

Special procedural rules. Trade secret proceedings have their own rules in the Dutch Code of Civil Procedure (DCCP). At a party’s request, the court can designate information as confidential; anyone taking part in the proceedings may then not use or disclose it (Article 1019ib DCCP). When granting a provisional measure, the preliminary relief judge can require security for the loss the defendant and third parties may suffer (Article 1019ic DCCP). The losing party can be ordered, on request, to pay reasonable and proportionate legal costs, unless fairness dictates otherwise (Article 1019ie DCCP). Mind the limitation period: a claim for an injunction or another measure under Articles 5, 6 and 9 Wbb becomes time-barred five years after the day following the day you became aware of the infringement, and in any event twenty years after the infringement began (Article 3:310d DCC). For damages, the general rule of Article 3:310 DCC applies.

Trade secret or patent – which protection suits your situation in the Netherlands?

Entrepreneurs choose between secrecy and a patent application. Both offer advantages but differ fundamentally. A Dutch patent gives an exclusive right (Article 53 Dutch Patents Act 1995) that ends at the latest twenty years after the filing date, and lapses earlier if the renewal fees are not paid (Article 36(6) and 62). Secrecy protects as long as the information meets the conditions of the Wbb, potentially for decades.

A patent makes your invention public. The Netherlands Patent Office enters the application in the public patent register as soon as possible after eighteen months from the filing date (or the first priority date) (Article 31 Dutch Patents Act 1995). Competitors can then see how your innovation works, and after the patent ends anyone can use the technology freely. That is why manufacturers whose machines stay inside closed facilities often choose secrecy.

Advantages of trade secrets:

No time limit on protection, as long as the information meets the conditions of Article 1 Wbb
No application costs or registration procedure
No disclosure obligation
Combinable with other protection forms
Protects non-technical information as well

Secrecy does carry risks. If a competitor develops the same knowledge independently, it acts lawfully (Article 3(1)(a) Wbb) and you cannot stop it. It can also apply for a patent on the same invention. If, on the filing date of that application (or the priority date), you were already making or using the invention in the Netherlands in or for your business, or had started to do so, you may continue as a prior user, unless you derived your knowledge from the applicant (Article 55(1) Dutch Patents Act 1995). So record from when you use the technology.

Patents offer in contrast:

An exclusive right for at most twenty years, also against anyone who develops the invention independently (except a prior user)
Active enforcement against copying
Marketable property rights
Protection independent of secrecy
Deterrent effect on competitors

Often you combine both protection forms. Patent the hardware of your digital system, for instance. Protect the software through copyright. Keep data and algorithms secret as trade secrets. This layered protection maximizes your competitive advantage.

How do you prevent loss of trade secrets during staff transitions according to Dutch legislation?

Departing employees are a major risk to your trade secrets. They have knowledge of processes, customers and strategies. Employers therefore take preventive measures during the employment.

Start with clear confidentiality clauses in employment agreements. This provision specifies which information remains confidential – even after termination. Consequently, the ex-employee may not use this knowledge with a new employer or own business.

Effective personnel measures:

Confidentiality clause at commencement of employment
Restricted use provision for specific knowledge
Exit interview emphasizing obligations
Withdrawal of access rights on exit date
Non-compete clause for key positions (in writing, subject to the conditions of Article 7:653 DCC)
Penalty provision for breach of confidentiality
Training on handling confidential information

Furthermore, strict access control prevents employees from obtaining unnecessary information. Share confidential knowledge only with workers who need it for their function. For example: a production employee need not access the complete customer database. Particularly for sensitive functions in R&D or sales, this deserves attention.

A non-compete clause protects your trade secrets indirectly. The court can annul the clause in whole or in part if, compared with your interest to be protected, the employee is unfairly disadvantaged (Article 7:653(3) DCC). In a fixed-term contract, the court annuls it entirely if it is not necessary because of compelling business or service interests. If the employment ends because of seriously culpable acts or omissions of the employer, the employer cannot rely on the clause (paragraph 4). If the clause seriously hinders the employee, the court can order the employer to pay compensation (paragraph 5).

What role do non-disclosure agreements play in collaboration under Dutch law?

Business partners regularly gain access to your trade secrets. Suppliers receive technical specifications. Potential investors analyze financial data. Collaboration partners share innovation knowledge. Therefore, non-disclosure agreements (NDAs) secure confidentiality with external parties.

An NDA defines which information remains confidential. Additionally, this agreement specifies the purposes for which the recipient may use the knowledge. This restricted use provision prevents misuse. For instance: a supplier may only use technical drawings for production of your order – not for proprietary product development.

Core provisions in effective NDAs:

Definition of confidential information
Permitted use (restricted use)
Duration of confidentiality obligation
Exceptions to confidentiality
Return obligation upon termination of collaboration
Penalty clause for breach
Applicable law and competent court

Furthermore, the NDA regulates what happens upon termination of collaboration. Must the other party return or destroy information? Does confidentiality continue thereafter? These agreements prevent disputes afterwards.

Law firms in Amsterdam advise different NDA variants. A unilateral NDA protects only your information. Bilateral NDAs apply reciprocally when both parties share secrets. Particularly in innovation collaborations, partners often share jointly developed knowledge.

How do you prove the existence of your trade secret in the Dutch jurisdiction?

Legal proceedings require proof that your information qualifies as a trade secret. The judge assesses whether you satisfied the three statutory conditions. Consequently, forward-thinking entrepreneurs systematically collect evidence.

An i-DEPOT proves that your documents existed on a certain date (Article 4.4bis Benelux Convention on Intellectual Property). The BOIP (Benelux Office for Intellectual Property) keeps them under strict secrecy. Check the BOIP website for current fees and storage periods. An i-DEPOT does not replace other measures.

Evidence for court proceedings:

i-DEPOT (proof that documents existed on a certain date)
Notarial deed recording the secret
Confidentiality agreements with employees
NDAs with business partners
Classification system for confidentiality levels
Access logs from ICT systems
Training documents about confidentiality
Emails emphasizing confidentiality

Moreover, you document the measures that safeguard secrecy. Collect screenshots of access rights in your systems. Preserve instructions where employees learn about confidential information. Record which spaces are physically secured. Eventually, you must convincingly demonstrate that reasonable measures were taken.

What do you risk with insufficient protection in the Netherlands?

The Act requires reasonable steps to keep information secret (Article 1(c) Wbb). If you do not take them, your knowledge is not a trade secret within the meaning of the Act, however valuable it is, and you cannot rely on the Wbb. You will then depend mainly on contractual arrangements, such as an NDA or confidentiality clause, and on any other rights you may have, such as a patent or copyright.

Concrete risks with inadequate protection:

Loss of legal protection under Trade Secrets Protection Act
Competitors may copy your processes with little legal recourse
Ex-employees use knowledge with new employer
Investors value your company lower
Innovation advantage evaporates
Market position weakens
Claims under the Trade Secrets Protection Act fail

Furthermore, active protection strengthens your organization internally. Employees better understand which information remains confidential. This awareness reduces unintentional leaks through social media or networking events. Structured security also reduces the risk of data breaches from cyberattacks.

Additionally, demonstrable measures strengthen your company value. Potential buyers or investors value well-protected knowledge bases higher. Particularly during acquisitions or mergers, due diligence specialists examine how effectively you protect trade secrets. Inadequate protection depresses valuation.

What steps do you take today for better protection under Dutch law?

Effective protection starts with inventorying your trade secrets. Identify which knowledge, processes, or information provide competitive advantage. Subsequently, classify this information by confidentiality level. Determine who needs access for their function.

Action plan for strengthening confidentiality policy:

Inventory valuable trade secrets per department
Classify information by confidentiality level
Implement physical access controls for sensitive spaces
Strengthen ICT security with encryption and password policy
Update confidentiality clauses in employment agreements
Execute NDAs with suppliers and collaboration partners
Organize training for personnel about confidentiality
Record core documents with an i-DEPOT (proof of date)
Document all protection measures systematically
Evaluate semi-annually whether measures remain adequate

A specialised law firm in Amsterdam can advise on legal optimisation. It can analyse your current contracts for effectiveness, assess whether your confidentiality clauses are enforceable and develop NDA templates that fit your collaborations.

Begin today with protecting your most valuable knowledge. Then extend successful measures to other trade secrets. Systematic protection determines whether your competitive advantage lasts.

Protect your trade secrets now – prevent competitors from using your knowledge without consequences.

Frequently asked questions about trade secrets and confidential information under Dutch law

What are trade secrets under Dutch law?

A trade secret is information that meets three conditions: it is secret (not generally known among or readily accessible to the circles that normally deal with it), it has commercial value because it is secret, and the person lawfully in control of it has taken reasonable steps to keep it secret (Article 1 Dutch Trade Secrets Protection Act). Examples are formulas, production methods, customer lists, source code and pricing strategies.

What is the difference between a trade secret and confidential information?

The Trade Secrets Protection Act only defines a trade secret. What else counts as confidential information in your business is usually defined in a confidentiality clause or NDA, with the permitted use and the duration. A breach of such a clause is a breach of contract (Article 6:74 DCC). If the information also meets Article 1 Wbb, you have statutory protection as well, including against third parties who knew or ought to have known of the unlawful origin (Article 2(3) Wbb).

What does NDA mean, and do you need one?

NDA stands for non-disclosure agreement: a contract in which the recipient promises to keep information confidential and to use it only for an agreed purpose. Dutch law does not require an NDA to protect a trade secret, but an NDA is often part of the reasonable steps of Article 1(c) Wbb, and using or disclosing a secret in breach of a confidentiality agreement is unlawful (Article 2(2)(b) Wbb).

How long does trade secret protection last in the Netherlands?

There is no fixed term. Protection lasts as long as the information meets the conditions of Article 1 Wbb. Once it becomes generally known or readily accessible, it is no longer a trade secret. A claim for an injunction becomes time-barred five years after you became aware of the infringement, and in any event twenty years after it began (Article 3:310d DCC).

How do you protect confidential engineering know-how: as a trade secret or with a patent?

A patent gives an exclusive right for at most twenty years from filing, but the application is made public after about eighteen months (Articles 31, 36(6) and 53 Dutch Patents Act 1995). Secrecy has no fixed term, but it does not stop independent development or reverse engineering of a product on the market (Article 3(1)(a) and (b) Wbb). Know-how that cannot be derived from the product itself is often kept secret; for the rest, a patent may fit better.

Primary sources

Dutch Trade Secrets Protection Act (Wet bescherming bedrijfsgeheimen, version in force from 18-02-2023): Articles 1, 2, 3, 4, 5, 6, 7, 8 and 9
Dutch Code of Civil Procedure (Wetboek van Burgerlijke Rechtsvordering): Articles 1019ib, 1019ic and 1019ie
Dutch Civil Code (Burgerlijk Wetboek): Articles 3:310, 3:310d, 6:74 and 7:653
Dutch Patents Act 1995 (Rijksoctrooiwet 1995): Articles 31, 36, 53, 55 and 62
Benelux Convention on Intellectual Property (BVIE): Article 4.4bis (i-DEPOT)