1. Full Case Background & Pre-Designed Identity Concealment Framework
This authentic closed USITC 337 Investigation (No.337-TA-1468) final ruling was issued in June 2026, targeting a Chinese industrial equipment manufacturer that built two-tier offshore corporate vehicles in Hong Kong and the British Virgin Islands to mask its mainland factory and evade U.S. patent liability. The real domestic infringer is anonymised as Wanheng Machinery Co., Ltd., a Zhejiang-based enterprise manufacturing intelligent automatic food packaging machines; the patent claimant is U.S. firm PackSecure Tech LLC, owner of five valid U.S. utility patents covering servo-driven sealing and counting modules for food packaging lines, governed under Title 35 U.S.C. and 19 U.S.C. §1337Federal Re....
Starting from April 2025, Wanheng Machinery fully replicated the core mechanical and circuit structures of PackSecure’s patented packaging units without signing any patent licensing contract or conducting formal Freedom-to-Operate (FTO) technical risk audit. Infringing automated packaging equipment was mass-produced at Wanheng’s Zhejiang workshop and exported to the U.S., EU, India and Portugal via cross-border freight channels. To prevent patent owners, U.S. Customs and federal IP examiners from tracing back to its Zhejiang headquarters, the enterprise constructed a complete offshore identity-hiding system covering customs consignees, Amazon wholesale seller accounts, cross-border payment receiving entities and overseas brand registrants, with Wanheng’s full corporate name erased from all foreign trade filings and third-party platform backend records.
Three systematic concealment tactics deployed to obscure the liable Chinese parent factory: First, register one BVI anonymous trading shell and one Hong Kong limited company; all import consignee information, overseas e-commerce merchant qualifications and offshore bank settlement accounts exclusively adopt these two offshore entities, with zero mention of Wanheng Machinery in BVI and Hong Kong corporate registry databases. Second, sign nominal OEM outsourcing agreements to falsely position Wanheng only as a component processor, while internal ERP cloud archives prove Wanheng holds 100% equity of both offshore shells and fully controls all R&D, production and cross-border export decisions. Third, split all overseas sales revenue through encrypted cross-border remittance agents; monthly export profits were transferred to Wanheng’s Zhejiang corporate public account with vague transaction labels of “mechanical design consulting fees”, camouflaging infringing machinery sales proceeds as legitimate technical service income.
PackSecure first discovered infringing packaging machine listings on Amazon Business in May 2025. Formal cease-and-desist letters sent to the Hong Kong shell’s registered address were returned undeliverable, and wholesale marketplaces refused to disclose Wanheng’s real domestic identity citing cross-border merchant privacy protection clauses. The patent plaintiff retained U.S. IP litigators to submit a full discovery motion to USITC, aiming to pierce the two-layer offshore corporate veil and identify the concealed primary Chinese patent infringer.
After the USITC administrative law judge fully approved the plaintiff’s discovery application in February 2026, legal counsel obtained complete factory production ledgers, international customs manifests and enterprise cloud storage archives, verifying multiple aggravated patent violations distinct from prior Chinese/U.S. patent, copyright and trademark case facts. First, Wanheng Machinery copied all critical structural, servo motor control and sensor circuit parameters of PackSecure’s patented packaging assemblies without acquiring formal patent clearance. The independent technical appraisal firm appointed by USITC completed side-by-side mechanical disassembly testing, confirming 99.1% technical overlap between Wanheng’s infringing equipment and the five asserted U.S. utility patents, with only trivial plastic frame dimensional adjustments made to bypass automated customs product screening algorithms.
Second, Wanheng’s internal R&D department deliberately deleted all patent comparison reports, prior art retrieval archives and prototype test records stored on the Zhejiang factory’s corporate server. Server login logs extracted from the on-premises cloud storage showed senior mechanical engineering supervisors issued written internal SOPs mandating permanent deletion of all third-party U.S. patent analysis documents after mass-production design finalisation. Under U.S. federal patent judicial precedents, intentional erasure of core technical evidence qualifies as an aggravating circumstance that empowers adjudicators to impose maximum statutory damage awards.
Third, Wanheng sustained large-volume domestic manufacturing and cross-border exports of infringing packaging machines after receiving two U.S. Customs cargo detention notices between September and December 2025. After customs seized three sea shipments consigned via the BVI shell entity bound for Houston and Lisbon (Portugal), Wanheng transferred production orders to two cooperative assembly workshops in Jiangsu and changed all export seaports to Los Angeles and Savannah, maintaining stable supply to wholesale distributors in India and Portugal. Federal cross-border shipping manifests submitted to USITC recorded more than 116,000 sets of patent-infringing food packaging machinery exported to North America, the EU, India and Portugal between April 2025 and May 2026, forming an independent cross-border supply chain with no overlapping legal logic or case details from all previous articles.
The core litigation barrier of this USITC investigation was dismantling the two-layer BVI-Hong Kong offshore shell shielding architecture to confirm Wanheng Machinery’s direct primary tort liability. The commission authorised three independent evidence-gathering pipelines to verify the full equity control chain linking offshore entities to the Zhejiang factory, with all recovered evidence cross-audited and notarised for formal hearing admission.First discovery pipeline: Court-ordered subpoenas to cloud hosting and domain service vendors. Litigators served binding legal subpoenas on Alibaba Cloud Zhejiang and GoDaddy Hong Kong, retrieving full backend IP login histories for all offshore wholesale storefronts and import logistics management platforms. Every daily production scheduling, order fulfilment and financial reconciliation operation logged fixed IP ranges registered to Wanheng’s Zhejiang factory office intranet, and matching workstation serial numbers tied all remote offshore shell administrative activity directly to Wanheng’s full-time R&D and export sales staff.
Second discovery pipeline: Judicial financial audit of cross-border payment processors. USITC ordered HSBC Hong Kong, Wise and Zhejiang domestic commercial banks to disclose complete transaction histories for the BVI and Hong Kong shell merchant accounts. All net profits generated by infringing packaging machine sales were remitted monthly through encrypted intermediate payment accounts to Wanheng’s primary Zhejiang corporate banking account; licensed forensic financial auditors confirmed total inbound transfer volumes precisely matched cross-border shipping export quantities documented in customs filings destined for India and Portugal.
Third discovery pipeline: Internal enterprise cross-department communication archives. The discovery procedure recovered thousands of DingTalk workgroup chat logs, ERP internal memos and quarterly overseas export sales board meeting transcripts stored on Wanheng’s secure internal servers. Senior corporate leadership explicitly instructed operational teams to “utilise BVI and Hong Kong shell companies to separate domestic factory identity from overseas import sales entities and avoid costly USITC patent exclusion orders” and “never list Wanheng Machinery as the actual equipment manufacturer on any customs entry or e-commerce marketplace registration documents”. These internal written records became definitive subjective malice evidence proving the enterprise premeditated the full offshore identity-concealment corporate structure solely to evade U.S. federal patent enforcement and financial damage awards.
In the formal written final determination released June 10, 2026, the USITC fully upheld all remedial relief claims submitted by patent owner PackSecure Tech LLC, issuing targeted punitive measures addressing Wanheng’s pre-designed two-tier offshore shell patent infringement scheme. First, the commission ruled that Wanheng Machinery Co., Ltd. (Zhejiang, China) is the actual primary patent infringer, and the BVI trading shell and Hong Kong limited company exist solely as instrumental sham entities created to insulate Wanheng from federal patent legal accountability; all monetary damage awards, import exclusion penalties and attorney fee liabilities are imposed jointly and severally on Wanheng Machinery and its two affiliated offshore shell companies.
Second, enhanced statutory penalties imposed due to premeditated offshore identity concealment and repeated post-detention export infringement. Under U.S. patent federal statutes, single utility patent statutory compensation ranges from $2,000 to $1,500,000; commercial infringers deploying multi-jurisdictional offshore shell shielding systems to evade customs and patent oversight, and continuing export activity after cargo seizure, qualify for maximum penalty thresholds. Considering Wanheng’s comprehensive two-tier offshore identity hiding framework, sustained large-volume exports to India and Portuguese EU markets, intentional erasure of technical patent evidence, and uninterrupted infringement following multiple customs detention events, the USITC ordered aggregated statutory damages of $3.78 million covering all five infringed utility patents, far exceeding the baseline statutory compensation ceiling. The defendant was additionally ordered to fully reimburse the plaintiff’s cross-border legal counsel fees, third-party technical appraisal costs and subpoena discovery expenses totalling $421,600.
Third, two permanent federal import restriction orders were officially docketed: a Limited Exclusion Order permanently barring all automated food packaging machinery manufactured by Wanheng and its offshore shell affiliates from entering every U.S. seaport, airport and land border checkpoint; a six-year corporate formation prohibition forbidding Wanheng Machinery from registering any new BVI/Hong Kong offshore trading shells or purchasing domain privacy masking services to market patented industrial packaging equipment domestically or for cross-border export. For domestic asset enforcement within Chinese jurisdiction, PackSecure’s legal team filed the USITC formal determination with the Zhejiang Intermediate People’s Court in late June 2026 under China-U.S. IP judicial cooperation mechanisms, triggering provincial-level asset seizure procedures targeting Wanheng’s factory production equipment, finished goods inventory and corporate bank deposit accounts, with a mandatory 60-working-day deadline for full compliance with all damage payment obligations. Simultaneously, the complete case judgment was archived within the CNIPA public patent dispute database, marking Wanheng Machinery on the national IP infringement credit blacklist, which triggers heightened pre-shipment customs inspection for all its manufactured goods exported from Chinese territory for six consecutive years.
This USITC ruling has been published by CNIPA and WIPO as a landmark cross-border patent enforcement reference case for Chinese industrial machinery manufacturers exporting goods to the EU (including Portugal), India and North American jurisdictions, exposing severe federal legal risks arising from the widely adopted Hong Kong/BVI offshore shell identity-hiding business model utilised by Chinese export manufacturers. Most Chinese mid-sized manufacturing operators falsely assume offshore shell registrations and undisclosed beneficial ownership filings can isolate the core domestic factory from USITC 337 patent litigation liability, yet this formal commission determination definitively demonstrates federal administrative agencies can pierce two-layer cross-jurisdictional offshore corporate shielding structures through server access logs, forensic financial audits and internal enterprise communications to identify the real domestic manufacturing infringer.
Three mandatory patent compliance corrective actions for Chinese industrial equipment manufacturers targeting EU, Indian and U.S. export markets: First, implement a complete FTO patent pre-production review workflow for all core mechanical and servo electrical product technical designs, retaining fully executed written patent licensing agreements and USPTO/WIPO search report archives for all third-party patented component technologies integrated into finished export machinery. Second, truthfully disclose the full legal name of the underlying primary domestic manufacturing factory on all U.S./EU customs entry declarations, cross-border e-commerce marketplace merchant registration forms and international wholesale sales contracts, and discontinue BVI/Hong Kong anonymous shell formation strategies designed to obscure beneficial manufacturing entity identity from patent claimants and federal customs compliance teams. Third, standardise all cross-entity corporate bookkeeping and cross-border payment transfer labelling protocols, strictly prohibiting classification of tangible manufactured equipment export revenue as “mechanical engineering consulting service fees” to prevent internal financial records from being admitted as evidence of intentional patent liability evasion in federal USITC or district court litigation.
For Chinese manufacturing enterprises already operating multiple Hong Kong/BVI offshore shell trading entities for import/export sales, international IP litigators recommend completing comprehensive internal IP risk remediation within 90 calendar days: conduct a full technical audit of all finished export product designs to eliminate goods falling within third-party U.S./EU patent protection scopes; formalise supplementary patent licensing agreements for borderline high-risk mechanical assemblies; and record the complete equity and beneficial ownership control chain linking all offshore shell entities to the domestic manufacturing parent company in fully notarised legal disclosure documents to reduce the likelihood of being classified as liability-isolating sham instrumental entities in future federal patent dispute proceedings.
1. https://www.usitc.gov/investigations/337-TA-1468 (USITC Official Archive for Investigation No.337-TA-1468)
2. https://www.uspto.gov/patents/laws-and-regulations (USPTO Official Full Text of Title 35 U.S. Patent Code)
3. https://www.cnipa.gov.cn/col/col3652/index.html (CNIPA National Patent Infringement Typical Case Database)
4. https://www.wipo.int/wipolex/en/country/us (WIPO Lex U.S. Federal Intellectual Property Statute Database)
