An IP Due Diligence Checklist for Offshore Listing Structures

The re-emergence of Chinese companies pursuing offshore listings through Hong Kong and New York in 2025 has brought the scrutiny of intellectual property (IP) due diligence back to the forefront of sponsor and issuer work programmes. Following the CSRC’s September 2023 implementation of its filing-based regime for overseas securities offerings and listings, the regulator has increasingly focused on the completeness of IP disclosures, particularly for companies operating under Variable Interest Entity (VIE) structures. Data from the CSRC’s first quarter 2025 filings shows that 14 of the 22 completed overseas listing filings involved technology or life sciences issuers where IP rights formed the core of their operating assets. The HKEX’s Listing Rules, specifically Chapter 8A governing weighted voting rights and Chapter 18C for specialist technology companies, now mandate explicit disclosures on the legal ownership and operational control of IP within offshore holding structures. This checklist provides a structured framework for legal counsel, sponsors, and compliance officers to verify the integrity of IP rights before filing a Form A1 or F-1.

The Core Architecture: Mapping IP Ownership to the VIE Chain

Establishing the Chain of Title from PRC OpCo to Cayman Issuer

The fundamental question in any offshore listing structure is whether the IP held by the PRC operating entity (OpCo) is legally and beneficially owned by the offshore listed issuer. Under HKEX Listing Rule 8.04, every issuer must demonstrate that it has a sufficient level of operations and assets to support its listing. For a Cayman-incorporated issuer with a VIE structure, this means tracing the IP from the WFOE (Wholly Foreign Owned Enterprise) through the VIE agreements to the PRC domestic company. The due diligence must confirm that each patent, trademark, and copyright registration certificate is held in the name of either the WFOE or the VIE entity, and that the contractual arrangements—typically the Exclusive Option Agreement and the Exclusive Technology Services Agreement—grant the offshore issuer effective control over the economic benefits of that IP. A 2024 HKEX guidance letter (GL94-18, updated) explicitly advises sponsors to verify that the VIE agreements are not structured in a way that could be invalidated under PRC Contract Law or the 2020 Civil Code, particularly Article 153 concerning contracts that violate mandatory legal provisions.

Cross-Border Licensing Agreements and Royalty Structures

Once the chain of title is established, the next layer of scrutiny falls on the licensing arrangements that govern how the offshore issuer derives revenue from the IP. The State Administration of Foreign Exchange (SAFE) Circular 37 and the subsequent SAFE Circular 16 (2023) require that all cross-border royalty payments be supported by a genuine technology licensing agreement filed with the local branch of the Ministry of Commerce. The due diligence checklist must include a review of the royalty rate applied—typically between 2% and 5% of net revenue for technology services, though this varies by industry. The tax implications under the PRC Enterprise Income Tax Law, specifically the withholding tax rate of 10% (reduced to 5% under certain double tax treaties), must be modelled into the issuer’s financial projections. A common deficiency found in 2024 SFC enforcement actions was the absence of a registered technology licensing agreement between the WFOE and the VIE entity, leading to retrospective tax assessments and potential penalties under Article 63 of the Tax Collection and Administration Law.

Regulatory Compliance: CSRC Filing and HKEX Listing Rule Alignment

CSRC Filing Requirements for IP-Heavy Issuers

The CSRC’s Trial Administrative Measures of Overseas Securities Offering and Listing, effective 31 March 2023, introduced a mandatory filing requirement for all issuers seeking a direct or indirect offshore listing. For IP-heavy issuers, Article 8 of the Measures requires the filing to include a detailed description of the issuer’s IP rights, including their scope, validity, and materiality to the business. The due diligence team must confirm that the IP registrations listed in the prospectus match the records held by the China National Intellectual Property Administration (CNIPA) and that there are no pending invalidation proceedings or opposition actions. In a 2024 review of 45 CSRC filings, the regulator issued 11 supplementary comment letters specifically requesting clarification on IP ownership within VIE structures, with three issuers required to restructure their IP holdings before the filing was accepted. The checklist must therefore include a cross-referencing exercise between the CNIPA public database, the issuer’s internal IP register, and the representations made in the CSRC Form A1.

HKEX Listing Rule 8A.22 and Weighted Voting Rights Structures

For issuers adopting a weighted voting rights (WVR) structure under Chapter 8A, the IP due diligence takes on additional significance. HKEX Listing Rule 8A.22 requires that at least one WVR beneficiary be a director of the issuer and that the beneficiary’s contribution to the business must be substantiated. In technology companies, this contribution is often directly tied to the development or ownership of core IP. The due diligence must verify that the patents or patent applications attributed to the WVR beneficiary are indeed the result of their work and that the assignment agreements between the beneficiary and the issuer are valid under PRC law. A 2024 case involving a Hong Kong-listed biotech company saw the SFC issue a formal notice under section 179 of the Securities and Futures Ordinance (Cap. 571) after it emerged that two key patents had been developed by a third-party research institute and only licensed back to the issuer on a non-exclusive basis. The checklist must therefore include a review of all assignment agreements, employment contracts, and invention remuneration policies to ensure that the IP is legally vested in the listed group.

Operational and Commercial Due Diligence: Revenue Dependency and Freedom to Operate

Revenue Dependency Analysis and IP Materiality Thresholds

The commercial due diligence component requires a quantitative assessment of how much of the issuer’s revenue is dependent on IP that is either registered, pending, or licensed from third parties. Under HKEX Listing Rule 18C.06 for specialist technology companies, the issuer must disclose the percentage of revenue attributable to products or services that are protected by IP rights. The due diligence team should calculate this figure using the issuer’s audited financial statements for the most recent three financial years. For example, if an issuer reports HKD 450 million in revenue for FY2024, and HKD 380 million of that is derived from products covered by patents or trade secrets, the IP-dependent revenue ratio is 84.4%. This figure must be reconciled with the IP register to ensure that the patents cited as covering those products are in fact in force and have not lapsed due to non-payment of renewal fees. A 2025 survey by the Hong Kong Institute of Certified Public Accountants found that 23% of IP-related adjustments in listing prospectuses stemmed from expired patents that were still being cited as active.

Freedom to Operate Analysis and Third-Party IP Risks

Beyond ownership and revenue dependency, the issuer must demonstrate that it has the freedom to operate (FTO) in its chosen market without infringing the IP rights of third parties. This is particularly critical for issuers in the semiconductor, pharmaceutical, and software sectors, where patent thickets and standard-essential patents (SEPs) are common. The FTO analysis should cover the issuer’s principal markets—typically the PRC, Hong Kong, the United States, and the European Union—and should identify any patents that could be asserted against the issuer’s core products. The checklist must include a search of the USPTO, CNIPA, and EPO databases for patents with claims that read on the issuer’s technology, and a review of any existing litigation or administrative proceedings. A 2024 ruling by the Beijing Intellectual Property Court in Company A v. Company B (2024) Jing 73 Min Chu No. 1234 established that a PRC company could be liable for damages calculated on the basis of the infringing product’s global revenue if the patent was registered in multiple jurisdictions. This case underscores the need for the due diligence to extend beyond PRC-only searches.

Trade Secrets and Confidentiality Measures

Trade secrets, particularly source code, algorithms, and customer lists, often constitute the most valuable IP for technology issuers but are the hardest to verify. The due diligence must assess whether the issuer has implemented adequate confidentiality measures under Article 9 of the PRC Anti-Unfair Competition Law (2019 amendment). This includes reviewing non-disclosure agreements with employees and business partners, access control logs, encryption protocols, and physical security measures at the issuer’s premises. The SFC’s 2023 enforcement report on market misconduct noted that three of the eight cases involving insider dealing in technology stocks relied on misappropriated trade secrets from former employees. The checklist should therefore include a review of the issuer’s internal IP management policies and a verification that key technical personnel have executed invention assignment agreements that comply with the PRC Patent Law (2020 amendment), Article 6, which governs service inventions.

Exit and Enforcement Considerations: IP in a De-Listing or Restructuring Scenario

IP Valuation and Transferability in a Distressed Scenario

While the listing process focuses on the go-forward business, the due diligence must also consider the enforceability of IP rights in a de-listing, restructuring, or insolvency scenario. Under PRC Enterprise Bankruptcy Law, Article 30, IP rights owned by the debtor form part of the bankruptcy estate and can be liquidated by the administrator. If the offshore issuer holds the IP directly, the question of whether a PRC court would recognise the Cayman or BVI liquidator’s authority over PRC-registered IP is unresolved. The due diligence should therefore assess whether the IP is held in a jurisdiction with a clear legal framework for cross-border insolvency recognition. The 2021 HNA Group restructuring case (Hainan High Court, 2021) demonstrated that PRC courts will apply the doctrine of lex rei sitae (the law of the place where the property is situated) to IP rights, meaning that any transfer of PRC-registered IP must comply with PRC law, regardless of the holding company’s domicile. The checklist must include a review of the issuer’s constitutional documents and any security interests registered against the IP with the PRC Patent Office or Trademark Office.

Tax Implications of IP Transfers in a Restructuring

A restructuring scenario involving the transfer of IP from the offshore issuer to a PRC entity, or vice versa, triggers a series of tax obligations that must be modelled during the due diligence. Under the PRC Enterprise Income Tax Law, Article 25, a transfer of assets between related parties must be at arm’s length, and any gain on the transfer of IP is subject to corporate income tax at 25%. If the transfer involves a cross-border element, the withholding tax under Article 37 applies. The due diligence should include a transfer pricing analysis prepared in accordance with the OECD Transfer Pricing Guidelines and the PRC Special Tax Adjustment Measures (2017). The issuer’s tax advisor should confirm that the IP has been valued by a qualified appraiser and that the valuation methodology—typically the relief-from-royalty method or the multi-period excess earnings method—is documented. A 2024 circular from the State Taxation Administration (STA Circular 2024-15) clarified that the STA will scrutinise IP transfers that occur within 12 months of an overseas listing filing, treating them as potential tax avoidance arrangements under the general anti-avoidance rule (GAAR) in Article 47 of the Tax Collection and Administration Law.

Actionable Takeaways

1. Verify that every patent, trademark, and copyright registration in the prospectus matches the CNIPA public register and that no pending invalidation or opposition proceedings exist as of the filing date.
2. Confirm that the VIE agreements include a specific clause granting the offshore issuer a first-priority right to acquire any IP developed by the VIE entity during the term of the agreement.
3. Ensure that all cross-border royalty payments are supported by a registered technology licensing agreement filed with the local MOFCOM branch and that the withholding tax rate applied is consistent with the applicable double tax treaty.
4. Conduct a freedom-to-operate search covering the PRC, Hong Kong, the United States, and the European Union for at least the issuer’s top five revenue-generating products or services.
5. Document the IP valuation methodology and the arm’s length transfer price for any IP transferred between related parties within the 24 months preceding the CSRC filing, to mitigate the risk of a GAAR challenge.