A Warsaw-based software company spends three years building a proprietary pricing algorithm. A departing engineer copies the codebase on their last day. Six months later, a competitor launches an almost identical product. The company has no confidentiality agreement in place, no documented access controls, and no evidence of the information's commercial value. The claim fails before it begins.

Polish law protects trade secrets under the ustawa o zwalczaniu nieuczciwej konkurencji (Act on Combating Unfair Competition, UZNK), which aligns with the EU Trade Secrets Directive. Protection attaches automatically when three conditions are met: the information is not publicly known, it has commercial value, and the holder has taken reasonable steps to keep it secret. Without documented protective measures, a Polish court will not recognise the claim – making internal procedures as important as the legal framework itself.

This guide walks through the practical steps for building a defensible trade secret programme in Poland. It covers what qualifies for protection, how to implement controls, what happens when secrets are misappropriated, and how cross-border operations affect the analysis. Three business scenarios – manufacturing, IT, and foreign investment – illustrate the key decision points.

What qualifies as a trade secret under Polish law?

Polish trade secret law protects any information that is not generally known, carries commercial value, and has been actively kept confidential by its holder. The UZNK definition tracks the EU Trade Secrets Directive closely. Qualifying information includes formulas, source code, customer lists, pricing models, supplier terms, and internal business strategies. The category is deliberately broad – the decisive question is not the type of information but whether the three statutory conditions are satisfied.

The "reasonable steps" requirement is where most Polish disputes are decided. A company that stores sensitive data on an open shared drive, distributes it without restriction, or fails to label documents as confidential will struggle to meet this threshold. The National Court Register (KRS) and court records show that defendants routinely challenge trade secret claims on this ground alone – and often succeed.

Commercial value does not require proof of revenue. Information that would give a competitor an advantage if disclosed satisfies the threshold. A startup's go-to-market plan, an R&D project at early stage, or a client's negotiating position can all qualify. The Polish Financial Supervision Authority (KNF) treats certain financial models held by regulated entities as trade secrets for supervisory purposes – a useful analogy for structuring internal classification frameworks.

Three categories frequently cause confusion:

  • Employee skills and general professional knowledge – not protectable
  • Information in the public domain – not protectable, even if compiled internally
  • Aggregated data that reveals a non-obvious pattern – potentially protectable if the compilation itself is kept confidential

One concrete figure matters here: the UZNK provides a three-year limitation period for claims after the holder learns of the misappropriation. Missing that window forfeits the right to civil remedies entirely – a consequence that cannot be reversed after the fact.

How should a Polish company implement trade secret controls?

Effective protection requires a layered programme covering documentation, contracts, and technical measures. The first layer is classification. Every company handling commercially sensitive information should maintain a written inventory identifying what qualifies as a trade secret, who has access, and on what basis. This document becomes the foundation of any future litigation. Without it, courts have no baseline against which to assess misappropriation.

The contractual layer is equally important. Non-disclosure agreements (NDAs) should be signed before any sensitive disclosure – with employees, contractors, prospective partners, and investors. Under Polish employment law, a standard employment contract does not automatically create post-employment confidentiality obligations beyond the duration of employment. A separate confidentiality clause or post-employment NDA is required. The maximum enforceable post-employment period is generally 36 months, and compensation is required for any restriction exceeding the employment term.

We secured injunctive relief protecting a client's customer database – valued at over PLN 3m – for a technology company in the Mazowieckie region (spring 2026). The decisive factor was a well-maintained access log combined with signed NDAs from all employees who had touched the data. Without those documents, the interim measure would not have been granted within the standard seven-day processing window.

Technical controls form the third layer. These include:

  • Role-based access controls limiting data to those with a business need
  • Audit logs recording who accessed what and when
  • Watermarking of sensitive documents
  • Device management policies restricting external storage

GDPR Poland requirements interact directly with this layer. Access logs and monitoring tools must comply with data protection rules – a point that many companies overlook when designing their trade secret programme. The Office for Personal Data Protection (UODO) has issued guidance on employee monitoring that sets limits on the scope and retention of such records. Integrating GDPR and trade secret controls from the outset avoids a conflict later.

What remedies are available when a trade secret is misappropriated?

Polish law offers both civil and criminal routes. On the civil side, the UZNK permits injunctions, damages, disgorgement of profits, and publication of the court's judgment at the defendant's expense. Injunctions are the most urgent tool – a court can issue an interim measure within days if the applicant demonstrates a credible claim and urgency. The risk of delay is real: once a competitor has used the information to enter a market or sign contracts, the commercial damage may be irreversible.

The criminal route under the UZNK carries a penalty of up to two years' imprisonment for deliberate misappropriation. Criminal proceedings can run parallel to civil claims. In practice, a criminal complaint filed with the police or prosecutor's office often produces faster disclosure of evidence than civil discovery – a tactical consideration worth raising early with an IP lawyer Warsaw-based or elsewhere in Poland.

Our team obtained a court order compelling the return of misappropriated technical drawings for an industrial client in Lower Silesia (autumn 2025). The claim succeeded because the client had documented the drawings' trade secret status in its internal register 18 months before the dispute arose. That prior documentation established the timeline the court needed to find misappropriation.

Three strategic choices arise at the remedies stage:

  • Civil injunction alone – fastest, preserves commercial relationship if needed
  • Civil + criminal – stronger pressure, longer timeline
  • Settlement negotiation – appropriate where the misappropriating party is a former employee with limited assets

One threshold to note: courts assess damages based on the royalty that would have been charged for authorised use. Establishing that figure requires expert evidence, typically from a forensic accountant or valuation specialist. Building a royalty benchmark into licensing agreements before any dispute arises makes this calculation significantly easier.

For companies managing cross-border data flows – for example, sharing proprietary datasets with a Ukrainian subsidiary – the legal mechanisms for data transfer interact with trade secret obligations. A structured approach to data transfer from Poland to Ukraine should address confidentiality classification alongside data protection requirements.

How do cross-border and technology-sector considerations affect protection strategies?

Foreign investors entering Poland through a subsidiary or joint venture face a specific challenge: trade secret protections established in the parent jurisdiction do not automatically transfer. A German investor whose home-country NDA is governed by German law may find that Polish courts apply Polish standards to assess whether reasonable steps were taken. The answer is to replicate – and document – the protective measures under Polish law from day one of the Polish operation.

The AI Act Poland framework adds a new dimension for technology companies. Systems classified as high-risk under the AI Act must maintain technical documentation that is, by definition, sensitive. That documentation will often qualify as a trade secret. Companies deploying high-risk AI in Poland should integrate their AI Act compliance programme with their trade secret controls – the two regimes overlap on documentation, access management, and audit trails. For a detailed breakdown of affected sectors, see the guide on AI Act high-risk classification, affected sectors and systems.

DORA compliance introduces parallel obligations for financial sector entities. Incident reporting under DORA may require disclosing information about proprietary systems to regulators. Companies should map which disclosures are legally compelled – and therefore do not constitute a waiver of trade secret protection – and which are voluntary. Voluntary disclosure without a confidentiality framework can undermine a later claim.

Trademark protection and trade secret protection serve different functions but are often confused. A trademark protects a brand identifier in the public domain. A trade secret protects information that derives value from remaining confidential. The two can coexist – a company can hold a registered trademark for its product name while simultaneously protecting the underlying formula as a trade secret. IP strategy should map both, since choosing to patent an invention makes it public and ends trade secret protection for that information.

Tax considerations also arise in cross-border structures. Transfer pricing rules applied by Polish tax authorities require documentation of transactions involving intangible assets – including trade secrets licensed between related entities. Structuring those arrangements correctly matters both for tax and for maintaining the confidentiality classification. For guidance on the tax dimension of IP structures, see the tax practice overview for Poland.

What are the most common mistakes in trade secret programmes?

The single most common failure is the absence of a written classification policy. Companies assume that labelling a document "confidential" is enough. It is not. Polish courts expect a systemic approach: a policy that defines what is classified, who decides, how access is granted, and how departing employees are offboarded. A one-page label without a supporting framework will not satisfy the "reasonable steps" standard.

The second mistake is failing to update NDAs when roles change. An employee promoted to a position with access to significantly more sensitive information should sign an updated agreement. The original NDA may not cover information the employee was not exposed to at the time of signing. This gap is particularly common in fast-growing technology companies where access expands informally.

Third, companies often neglect the offboarding process. A structured exit checklist – covering device return, access revocation, and a written reminder of confidentiality obligations – takes less than 30 minutes per departing employee. Skipping it costs significantly more when a dispute arises six months later. The 30-minute investment is measurable. The litigation cost is not.

What to prepare – a practical checklist:

  • Written trade secret classification policy with defined categories
  • Signed NDAs from all employees, contractors, and third parties with access
  • Access control log showing who has accessed sensitive information and when
  • Offboarding protocol with written acknowledgment of ongoing obligations
  • Annual review of the classified information inventory

The cost of building this programme is modest. A mid-sized company can implement the core framework within 60 days with legal support. The cost of not doing so – losing a trade secret claim because reasonable steps were not documented – can be measured in years of competitive advantage lost. That is the defining asymmetry of trade secret law: protection is cheap to build and expensive to reconstruct after the fact.

Frequently asked questions

Q: How long does it take to obtain an interim injunction in a trade secret case in Poland?

A: A Polish court can issue an interim measure without hearing the defendant if the applicant demonstrates urgency and a credible claim. In practice, this takes between three and fourteen days from filing, depending on the court's workload. The applicant must provide a security deposit, typically set by the court at a level proportionate to potential harm to the defendant. Preparing the application thoroughly – with classified information documentation and evidence of misappropriation – is the most effective way to shorten the timeline.

Q: Does a standard Polish employment contract protect trade secrets after an employee leaves?

A: This is a common misconception. A standard employment contract under the Labour Code protects confidential information during the employment relationship. Post-employment obligations require a separate written agreement. That agreement must specify the scope of restricted information, the duration (up to 36 months is generally enforceable), and the compensation payable to the former employee. Without a separate post-employment NDA, a departing employee faces limited legal exposure for using confidential information after their last day.

Q: Can a trade secret and a patent cover the same invention?

A: No. Obtaining a patent requires public disclosure of the invention, which ends trade secret protection for that specific information. The choice between patent and trade secret protection is strategic. Patents offer time-limited exclusivity with public disclosure. Trade secret protection has no fixed term but depends entirely on maintaining confidentiality. For inventions that are difficult to reverse-engineer, trade secret protection may be more durable. For inventions easily replicated by independent development, a patent may be preferable despite the disclosure requirement.

Specific circumstances in your company – the type of information, the competitive environment, and the risk profile of your team – determine which approach delivers the most durable protection.

To receive an expert assessment of your trade secret programme and identify gaps before a dispute arises, contact info@kordeckipartners.com.

KORDECKI & Partners is a law firm based in Warsaw and Krakow, advising business clients across 30 jurisdictions. Our team combines expertise in Polish and international law with a practical approach to IP and technology law, trade secret protection, AI Act compliance, and DORA. We work with Polish entrepreneurs, foreign investors, and in-house legal teams. To discuss your situation, contact info@kordeckipartners.com.

Disclaimer: This publication is provided for informational purposes only and does not constitute legal advice. The information herein should not be relied upon as a substitute for professional legal counsel tailored to your specific circumstances. KORDECKI & Partners assumes no liability for actions taken or not taken based on the contents of this material. For advice regarding your particular situation, please contact info@kordeckipartners.com.