Obtaining a European patent from the EPO is a major milestone – but protection in Poland does not happen automatically. Understanding the validation process is essential for any inventor or business seeking enforceable rights in the Polish market.
A European patent is a patent granted by the European Patent Office (EPO) under the European Patent Convention (EPC). The EPO examines the application centrally, and if the invention meets the requirements of novelty, inventive step, and industrial applicability, a single grant decision is issued. However, a European patent does not automatically create a uniform right across all member states – it is, in essence, a bundle of national patents.
This is precisely where the validation step becomes critical. Without proper validation, your EU patent will not be legally enforceable in Poland.
KEY FACT: TAs of April 2026, the European Patent Organisation (EPO) has 39 member states that are contracting states to the European Patent Convention (EPC). Poland has been a member of the European Patent Convention since 2004. Applicants must validate a patent separately in each desired country after the grant – and/or decide for its unitary effect (currently available in 19 states only).
Since June 2023, applicants can request unitary effect for a European patent, creating a so-called Unitary Patent. A patent with unitary effect provides uniform protection across all EU member states that have ratified the Unitary Patent Agreement (currently 19 countries) – in a single step, without the need for individual national validations within those states.
| Unitary Patent | Classical European Patent |
|---|---|
| Covers all participating EU member states uniformly.
One renewal fee, one registration. Managed centrally before the Unified Patent Court (UPC). |
Requires individual validation in each desired country.
National laws apply. Litigation handled by national courts. More flexibility in choosing states. |
IMPORTANT FOR POLAND: As of early 2026, Poland has not ratified the Unified Patent Court Agreement. This means Poland is not covered by the unitary effect system. Even if you obtain a Unitary Patent, you must still validate your European patent separately in Poland through the classical national route – if you want to protect your invention in Poland.
Polish validation must be completed within three months of the date on which the EPO publishes the mention of the grant in the European Patent Bulletin. Missing this deadline means losing patent protection in Poland entirely. The process is handled before the Polish Patent Office (Urząd Patentowy RP).
PROFESSIONAL TIP: Polish patent law requires that the representative filing before the Polish Patent Office in adversarial proceedings must be a qualified Polish patent attorney (rzecznik patentowy). Even for validation filings, working with a local expert avoids costly errors in translation or procedural requirements.
The validation procedure may appear straightforward, but errors in the Polish translation of patent claims can seriously undermine the scope of protection. A patent attorney in Poland with experience in European patents ensures that the claims are translated accurately, preserving the full scope intended by the EPO-granted text.
A qualified Polish patent attorney – or equivalently, a patent agent in Poland – also advises on:
A European patent granted by the EPO can protect a wide range of inventions, including technical products, processes, apparatus, chemical compounds, and software-implemented inventions with technical character. Once validated in Poland, the patent covers the same subject matter as the EPO grant, providing a 20-year term of protection from the international filing date, subject to payment of renewal fees.
The total cost of Polish validation includes the official fee payable to the Polish Patent Office, the cost of preparing a certified Polish translation of the patent specification, and professional fees of the Polish patent attorney or representative. Compared to the cost of obtaining the European patent before the EPO, Polish validation costs are modest – and the protection obtained for a significant market of over 38 million people makes it a commercially sound investment for most technology sectors.
PATENTBOX is a specialist intellectual property law firm based in Poland, offering full-service European patent validation and prosecution support. Our patent attorneys in Poland handle the complete validation process — from translation review and official filing to renewal management and enforcement strategy. Whether you are a foreign company seeking a qualified patent agent in Poland, or an inventor working directly with the EPO, PatentBox provides the expertise to secure and maintain your patent rights in the Polish market.
Contact us — as an experienced patent law firm based in Poznań, we will help you effectively secure your intellectual property rights in both the Polish and international markets.