In summaryPoland’s patent landscape is undergoing a significant shift, with the Unified Patent Court (UPC) flexing its jurisdictional muscles to cover disputes involving Poland, despite the country’s non-participation in the UPC system. Recent UPC decisions have confirmed that, under certain conditions, patent cases involving Poland can be heard before the UPC, especially when defendants are domiciled in UPC member states. Unified Patent Court asserts jurisdiction over patent infringements in Poland (non-UPC country)Twenty-four EU member states have signed the Agreement on a Unified Patent Court (UPCA). Poland has not signed the UPCA and is not part of the Unified Patent Court (UPC) system. However, does this mean that the UPC lacks jurisdiction over patent disputes in Poland?