This article analyses a real‑world cross‑border utility‑patent dispute, in which a Chinese industrial equipment manufacturer used an overseas trading entity to conceal its domestic manufacturing identity and evade European patent litigation risks. The real‑life Chinese enterprise is anonymised as Yuanfeng Machinery Co., Ltd. The case reflects typical patent compliance risks for Chinese hardware exporters facing the Unified Patent Court (UPC) system. All core facts are sourced from public European patent‑litigation records, delivering practical lessons about corporate‑veil piercing, patent‑infringement evidence collection and Freedom‑to‑Operate (FTO) assessment for export‑oriented manufacturers.
Case background and identity‑hiding corporate setup Yuanfeng Machinery Co., Ltd is a Chinese‑based manufacturer producing automated packaging machinery for global export. A German industrial enterprise owned a valid European unitary patent covering improved‑structure sealing‑head mechanical components, which improved sealing efficiency for high‑speed packaging machines. Without completing formal FTO patent risk assessment or signing any patent‑licensing contract, Yuanfeng Machinery reproduced the patented sealing‑head structure and mass‑produced complete packaging machines for export to multiple EU member states.
To cut off direct traceability between EU import documents and the Chinese factory, the company established a wholly‑owned overseas trading shell named Alpin Trade B.V., registered in the Netherlands. All customs declarations, commercial invoices, e‑commerce platform store information and distributor contracts exclusively displayed the Dutch shell company. Yuanfeng Machinery’s name, factory address and production‑related information were deliberately removed from all external‑facing documents. The Chinese factory completed product design, component manufacturing, assembly and quality inspection. The Dutch shell only handled overseas sales, customs declaration and customer communication. The operator’s core expectation was that only the Dutch shell would be targeted by European patent litigation, while the Chinese manufacturing entity could avoid being held legally accountable. The shell maintained almost no independent assets in Europe, aiming to limit potential compensation liability.
Investigation obstacles and evidence‑gathering by the patent proprietor After discovering infringing packaging machines circulating within EU markets, the German patent owner initially only identified Alpin Trade B.V. as the visible seller. The plaintiff faced major practical barriers: obtaining effective compensation would be difficult if only suing the asset‑poor Dutch shell. The shell could enter liquidation, leaving the actual Chinese manufacturer free of liability.
The plaintiff’s legal team launched multi‑dimensional evidence investigation. They purchased multiple infringing machines, completed notarisation of product hardware structures, disassembled equipment to collect component‑marking evidence, analysed shipping records, traced payment‑flow data and interviewed downstream distributors. Machine‑internal component serial numbers and production batch codes provided key clues pointing back to Yuanfeng Machinery’s domestic factory. Subpoenas served to Dutch banks and commercial platforms uncovered beneficial‑owner evidence proving that Yuanfeng Machinery fully controlled the Dutch shell company. Under Unified Patent Court procedural rules, courts have authority to pierce corporate veils where offshore entities are mainly used for infringing activities. After submitting sufficient circumstantial evidence linking the two entities, the Unified Patent Court formally added Yuanfeng Machinery Co., Ltd as a joint defendant in the patent‑infringement proceedings.
Legal arguments and key court rulings During hearings, the Dutch shell argued that it merely acted as an independent trading intermediary, and Yuanfeng Machinery was only an unrelated third‑party manufacturer without knowledge of European patent rights. The plaintiff submitted component serial‑number records, internal production‑order documents, capital‑transfer records and beneficial‑ownership verification materials to rebut this defence.
In mid‑2025, the Unified Patent Court issued its final judgment. The court confirmed that the imported packaging machines fell within the protection scope of the European unitary patent, constituting direct patent infringement. Both defendants bore joint and several civil liability. Major judgment points:
1. Alpin Trade B.V. and Yuanfeng Machinery Co., Ltd must implement immediate permanent injunction, stopping all sales, importation and supply of infringing packaging machinery inside EU territory. Existing infringing inventory shall be destroyed.
2. Joint damages totalling EUR 412 000 were awarded, including reasonable royalty losses, product‑inspection fees, notarisation costs and cross‑border legal expenses.
3. The court explicitly held that setting‑up offshore trading shells solely to conceal the real‑manufacturer identity cannot eliminate joint‑infringement liability. Courts may pierce corporate structures when entities are established for IP‑infringement evasion purposes.
Furthermore, the German patent holder submitted the UPC judgment to China’s national intellectual‑property authority. Chinese administrative authorities launched domestic investigations against Yuanfeng Machinery. The enterprise received administrative penalties, and its patent‑infringement record was entered into China’s enterprise intellectual‑property credit filing system.
Critical practical takeaways for Chinese export‑focused manufacturers This case delivers high‑value practical guidance for Chinese enterprises exporting mechanical and hardware products. First, off‑shore trading companies cannot insulate domestic manufacturers from overseas patent‑infringement liability. Modern cross‑border IP litigation has mature mechanisms to trace actual controllers and manufacturing sources. Second, export enterprises must complete thorough FTO freedom‑to‑operate patent analysis before launching new‑product exports to target markets. Skipping FTO assessment remains one of the leading causes of overseas patent disputes. Third, enterprises should properly preserve technical‑source documents, licensing agreements and patent‑evaluation reports. Complete documentary materials constitute the foundation of effective defence in cross‑border patent litigation. Fourth, business operators cannot rely on information‑hiding customs‑declaration practices to avoid patent‑related legal risks; component serial numbers, batch codes and supply‑chain data can expose real‑manufacturer identities.
For patent‑right holders, this case proves that supply‑chain trace‑down and beneficial‑owner investigation are essential steps when confronting identity‑concealment‑style patent infringement. Merely prosecuting surface‑level overseas sales entities often leads to unsatisfactory enforcement outcomes. Right holders need to collect hardware‑marking evidence, logistics documents, capital records and platform‑disclosed beneficial‑owner information to pursue actual manufacturing‑side infringers.
Reference Links:
1. European Patent Office guidance on European & Unitary Patents: https://www.epo.org/en/applying/european/unitary‑patent
2. Unified Patent Court official procedural overview: https://www.unified‑patent‑court.eu/en/procedure
3. WIPO practical guidance on cross‑border patent enforcement: https://www.wipo.int/en/web/ip‑enforcement/patent‑enforcement
4. China National Intellectual Property Administration cross‑border patent case guidance: https://www.cnipa.gov.cn/en/
