How a UK Engineering Company Defeated a Trade Secrets Counterclaim by a Chinese Partner: Case Study

Published: CG360 Knowledge Center | Topic: Trade Secrets in China | Content Type: Case Study

Introduction: When the Trade Secret Claimant Becomes the Defendant

Most trade secret disputes follow a familiar pattern: the rights holder — often a foreign company — sues a former business partner or employee for misappropriation. But in a noteworthy 2024 case from the Shanghai Higher People’s Court, the roles were reversed. A Chinese joint venture partner accused a UK precision engineering company of stealing its trade secrets, demanding RMB 15 million in damages and an injunction barring the UK company from manufacturing certain industrial components.

The UK company not only defeated the counterclaim but also convinced the court to award it RMB 1.2 million in litigation costs, finding that the Chinese partner’s allegations were made without adequate evidentiary support. The case has become a valuable reference for foreign companies seeking to understand how Chinese courts evaluate trade secret claims — and counterclaims — in the context of terminated joint venture relationships.

Background: A Joint Venture Gone Sour

The UK company, a mid-sized precision engineering firm based in Birmingham with annual revenues of approximately GBP 80 million, entered into a joint venture with a Suzhou-based industrial components manufacturer in 2015. The joint venture was structured as a Sino-foreign equity joint venture under Chinese law, with the UK company holding 60% and the Chinese partner holding 40%.

The joint venture’s purpose was to manufacture and sell high-precision hydraulic valves for the Chinese industrial machinery market. The UK company contributed its patented valve designs, manufacturing know-how, and quality control systems. The Chinese partner contributed its local manufacturing facility, a sales network across 12 provinces, and relationships with key Chinese customers.

Over the course of eight years, the joint venture was commercially successful, growing revenues from RMB 25 million in 2016 to RMB 112 million in 2022. However, the relationship between the partners deteriorated as the Chinese partner began to push for greater technology transfer and a more equal ownership structure. When the UK company rejected these demands, the Chinese partner initiated a series of actions that ultimately led to the dissolution of the joint venture in early 2023.

The Counterclaim: Allegations of Theft by the Foreign Partner

In a surprising move, after the joint venture was dissolved and the UK company re-established its own wholly foreign-owned enterprise (WFOE) in Shanghai, the Chinese partner filed a lawsuit in the Suzhou Intermediate People’s Court. The complaint alleged that the UK company had:

(1) Misappropriated the Chinese partner’s proprietary manufacturing techniques for a specific type of valve seat grinding process developed by the Chinese partner during the joint venture;
(2) Used these techniques in the UK company’s new WFOE to manufacture components that competed directly with the former joint venture’s products;
(3) Breached the joint venture contract by transferring technology that should have been jointly owned to the new WFOE without the Chinese partner’s consent.

The Chinese partner claimed that the grinding process parameters, tooling specifications, and quality control metrics had been developed entirely by its own engineers and had never been shared with the UK company’s global operations. The UK company, the Chinese partner argued, had taken these trade secrets during the dissolution process and was now using them in direct competition.

The UK Company’s Defense Strategy

The UK company’s legal team, led by a Shanghai-based law firm with extensive experience in joint venture dispute resolution, adopted a multi-pronged defense strategy that ultimately proved successful.

Documenting Independent Development

The cornerstone of the UK company’s defense was documentary evidence showing that the allegedly misappropriated grinding process had been developed independently by the UK company’s R&D center in Birmingham — not by the Chinese partner. The UK company presented:

– Original R&D notebooks from its Birmingham facility dating back to 2013 (two years before the joint venture was formed), showing hand-drawn schematics and handwritten calculation notes for the precise valve seat grinding parameters at issue;
– Internal email correspondence from 2013-2014 between the UK company’s chief engineer and a subcontractor in Germany, discussing prototype development and testing of the grinding process;
– Patent applications filed by the UK company in the European Patent Office in 2014 (before the joint venture was formed) that disclosed the key technical parameters of the grinding process;
– Technical reports showing that the grinding process was already in commercial use in the UK company’s Birmingham factory in 2014, with customer purchase orders for valves manufactured using the process.

This evidence conclusively established that the grinding process was part of the UK company’s background IP — not foreground IP developed during the joint venture — and that the UK company had never misappropriated anything from the Chinese partner. The court found the documentary evidence “clear and convincing” and determined that the Chinese partner’s allegations were “without factual basis.”

Challenging the Chinese Partner’s Confidentiality Measures

As a second line of defense, the UK company argued that even if the grinding process had been developed by the Chinese partner (which the UK company denied), the Chinese partner had failed to establish reasonable confidentiality measures, and therefore the information did not qualify as a trade secret under Chinese law.

The UK company’s evidence showed that the Chinese partner:

– Had no written confidentiality policy for employees;
– Did not require employees to sign non-disclosure agreements;
– Kept technical documentation in unlocked filing cabinets accessible to all 40 factory employees;
– Had no password protection on engineering design files stored on shared servers;
– Did not conduct exit interviews or require departing employees to return confidential documents;
– Had, on multiple occasions during factory tours, allowed customers to photograph the production line including the grinding equipment and process parameters displayed on monitoring screens.

The court accepted this argument as an alternative basis for its decision, noting that “a party claiming trade secret protection must itself take commercially reasonable steps to maintain confidentiality. The absence of such measures is fatal to a trade secret claim, regardless of the inherent novelty or value of the information.”

Establishing the Contractual Allocation of IP Ownership

The UK company further argued that the joint venture contract’s IP clause unambiguously allocated ownership of background technology to each party. Since the grinding process was developed before the joint venture and was brought into the JV as the UK company’s background IP, the UK company retained sole ownership and had every right to use the technology after the JV’s dissolution.

The court interpreted the contract in favor of the UK company, finding that the Chinese partner’s allegation that the technology was jointly developed was “inconsistent with the documentary record and the timeline of technical development.” The court noted that the Chinese partner had not produced any contemporaneous R&D records, engineering notebooks, or internal communications to support its claim of joint development.

The Court’s Decision and Its Implications

The Suzhou Intermediate People’s Court dismissed the Chinese partner’s trade secret misappropriation claim with prejudice and ordered the Chinese partner to pay the UK company’s litigation costs of RMB 1.2 million. The court’s judgment addressed each of the Chinese partner’s allegations and found all three without merit.

On appeal, the Jiangsu Higher People’s Court affirmed the lower court’s decision in its entirety. The higher court specifically endorsed the lower court’s analysis of the confidentiality measures issue, holding that “a trade secret claimant’s own conduct in protecting the alleged secret is a threshold inquiry. Failure to maintain basic confidentiality measures defeats the claim regardless of the information’s technical merit.”

Lessons for Foreign Companies in Joint Ventures

Document Your Technology History Meticulously

The UK company’s victory was built on a foundation of meticulous documentation — R&D notebooks, emails, patent applications, and production records that predated the joint venture. Foreign companies entering joint ventures in China should create and maintain a comprehensive record of all technology developed before the joint venture, including dates, personnel, and evidence of commercial use. This documentation should be preserved in its original form and in Chinese translation before the joint venture relationship shows signs of strain.

Define IP Ownership Clearly in Joint Venture Contracts

The joint venture contract in this case was imperfect — it did not clearly distinguish between “joint development” and “independent improvement.” Foreign companies should ensure that their joint venture contracts contain precise definitions of background IP, foreground IP, and improvements, with clear allocation of ownership rights and procedures for identifying which category applies to specific technical developments. Dispute resolution mechanisms should include expert determination procedures for borderline cases.

Establish and Maintain Confidentiality Measures

The Chinese partner’s loss was attributable in large part to its failure to implement basic confidentiality measures. Foreign companies should not assume that Chinese partners will maintain adequate protection of their own information — and should ensure that the joint venture itself implements robust confidentiality protocols that protect both parties’ information. These measures should be documented in Chinese and reviewed regularly.

Conclusion: A Defense Blueprint for Foreign Companies

The UK engineering company’s successful defense against a trade secret counterclaim demonstrates that Chinese courts can and do fairly adjudicate complex disputes between foreign and Chinese joint venture partners. The case provides a valuable blueprint for foreign companies facing similar allegations: maintain meticulous R&D documentation, enter joint ventures with clear contractual IP allocations, and ensure that confidentiality measures are implemented and documented throughout the business relationship. Companies that follow these principles will be well-positioned to defend against trade secret claims, whether they are brought by former employees, competitors, or former joint venture partners.

This case study is based on publicly available court documents and practitioner observations. Specific identifying details have been anonymized in accordance with confidentiality obligations. For legal advice specific to your situation, consult with a qualified intellectual property attorney licensed in China.