China patent: Assessing the implications of the US-China Phase One trade deal

Managing IP is part of Legal Benchmarking Limited, 1-2 Paris Gardens, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement

Cookies Settings

China patent: Assessing the implications of the US-China Phase One trade deal

Sponsored by

anjie-400px.png
adobestock-305810579-600.jpg

In the US-China Phase One trade deal signed on January 15 2020, notable agreements on patents mostly relate to pharmaceutical sectors – Articles 1.10, 1.11 and 1.12. It is possible that these articles may also have implications for other sectors, which remains to be seen in the subsequent implementation. In addition, the provisions on judicial enforcement and procedures should benefit all patent owners. More technical issues such as indirect infringement or changes to the judicial review of invalidation decisions are not addressed. This update provides a brief overview of these key changes.

Article 1.10 – consideration of supplementary data

This requires China to permit pharmaceutical patent applicants to rely on supplementary data to satisfy relevant requirements for patentability, including sufficiency of disclosure and inventive step, during patent examination proceedings, patent review proceedings, and judicial proceedings. China amended its patent examination guidelines in 2017 allowing the submission of supplementary data, but concerns remained among major pharmaceutical patent owners. The amended guidelines only cover the patent examination and review proceedings, and in China, the standard for accepting supplementary data is rather strict. Not only should the technical effect proved by the supplementary data have been clearly disclosed in the original application, but also some serious research efforts on the disclosed technical effect should have been done. A bigger concern is that more pharmaceutical patents are rejected or invalidated under inventiveness grounds, where supplementary data is not allowed. Article 1.10 seems to take a big step ahead, without specifying how the rules will be applied. Actually, some chemical industry patent owners are facing similar issues with supplementary data in China. This article is under the section for pharmaceutical-related IP, but it will be interesting to see whether the change may be eventually extended to non-pharmaceutical patents as well. We suspect that the actual implementation will be in the form of both amendments to the patent examination guidelines and judicial interpretation.

Article 1.11 – effective mechanism for early resolution of patent disputes

This really means what it says in terms of providing an early stage dispute resolution for originators and generics. This article seems to be inspired by the patent linkage system as well as the Biologics Price Competition and Innovation Act (BPCIA) in the US, as the mechanism covers both small molecules and biologics. In fairly concise language, given the complexity of the patent linkage system, the agreement intends to allow originators to resolve their patent disputes with generics prior to marketing approval, on both infringement and validity, through judicial proceeding or administrative proceedings. Originators will be able to find adequate remedies such as preliminary injunctions using these early resolution mechanisms.

Since mid-2017, China has announced in several high-level policy documents its determination to explore the establishment of a patent linkage system for the pharmaceutical sectors. This agreement is no doubt a new commitment, and even extends to biologics. Compared to other IP-related sections in the Phase One agreement, e.g. trade secrets and bad faith trademarks, for which most commitments are in place, this patent linkage area will require a lot more detailed work when it comes to implementation. We expect that the courts may take the lead in several pending cases and rule in favour of originators against attempted launches of generics prior to the expiration of patents.

Interestingly, the pesticide industry for agriculture has similar problems between originators and generics and may hope to take advantage of such a mechanism for early resolution of patent disputes as well.

Article 1.12 – extension of patent validity period

This requires China to permit patent term extensions to compensate for "unreasonable delays" that occur in granting the patent (also known as patent term adjustment) or result from pharmaceutical product marketing approvals (also known as patent term restoration). This commitment may yield some meaningful benefits at a fast pace. Early in October 2017, China had already announced its plan to try "piloting the compensation system for patent term". Afterwards, the provisions on patent term extensions were incorporated into the latest draft amendments to the patent law, published in 2019. The proposed rules, which allow up to 14 years of actual effective patent terms are applicable to invention patents of innovative drugs for which marketing approval is applied synchronously in China and abroad. In relation to this change, some domestic companies are not pleased with the synchronous launch requirements. Others are concerned about the definition of "innovative drugs". Hopefully, new draft language will address these concerns. Given the Phase One trade deal, the legislature may also need to come up with rules on patent term adjustment due to unreasonable delays in the patent examination process.

In the sections related to judicial enforcement and procedures, several commitments are worth attention. The commitments on enforcement of IP judgments are broad without much specifics, but it may be useful for patent owners to ask for more effective enforcement of permanent injunctions or even evidence preservation orders. Note that China actually has accomplished a lot when it comes to enforcement of monetary damages through its blacklist system and social credibility systems. Defendants who failed to pay damages suffer from real repercussions, including not being able to take aeroplanes.

The documentation authentication section is our favourite. It seems that practitioners finally may be able to save themselves from the notarisation and legalisation of overseas evidence, which can be introduced or authenticated through stipulation, or witness testimony under penalty of perjury.

The Phase One agreement also provides that China shall afford a party a reasonable opportunity to present witnesses or experts in its case and cross-examine any witness testifying in the proceeding. The requirements may be considered a done deal given current Chinese laws and regulations. The true challenges will lie in ensuring expert opinions are dealt with in a reasonable matter during trial or in court judgments.

In summary, the Phase One deal offers some new opportunities for patent owners, especially those in the pharmaceutical sectors. A patent linkage system will also benefit China-based innovative pharmaceutical companies. Once China reveals its action plan for implementing the agreements, we may have more insights on how the future system looks.

He Jing and Jerry Xia

more from across site and SHARED ros bottom lb

More from across our site

INTA has a right to protect its Annual Meeting, but making it harder for others to hold similar events risks leaving delegates with a bigger travel bill
The firm says it hopes to capture patent litigation work in Texas by arming itself with experienced trial lawyers with venue expertise
Ken Iijima's arrival continues a trend of ex-Pizzeys practitioners joining RnB IP, whose co-founder says independent ownership and a lucrative compensation model have become attractive in a consolidating market
McDermott Will & Schulte lawyers explore why the UPC is seeing rapid adoption by medtech for fast-moving disputes, while pharma and biotech take a cautious, selective approach over revocation risks
IP firms may be growing more comfortable with external capital, but uncertainty over who could ultimately own the business is complicating the investment pitch
The former Western District of Texas judge addresses perceptions of his courtroom, reveals what comes next as he returns to practice at A&O Shearman and explains why marathon running is ‘cathartic’
International Anti-Counterfeiting Coalition says it has been blocked from hosting its annual event in the city, ending a long tradition of holding the gathering in the days leading up to INTA’s flagship event
The ITC is a powerful tool for litigators, practitioners say, as the threat of an exclusion order on a critical tech component could mean disrupting the entire data centre's operations
Anna Toh plans to expand Rajah & Tann’s soft IP capabilities, leveraging its Southeast Asia network to support clients on cross-border portfolio management and commercial strategy
The Canadian boutique’s new IP lead says he wants to build a tech-enabled IP practice aimed at giving startups senior expertise away from the traditional ‘big law’ set-up
Gift this article