Japanese Company Wins Lithium Battery Patent Battle? A Chinese Company Issues a Stern Statement!

Recently, Zeon Corporation announced on its official website that on January 5, 2024, it had filed a civil lawsuit against Shenzhen Haodian Technology Co., Ltd. (hereinafter referred to as "Haodian Technology"), a company engaged in the production and sales of battery materials in Shenzhen, China, and its chairman, Wang Jian. On May 7, 2025, the Shenzhen Intermediate People's Court of China issued a first-instance judgment (Case No. (2024) Yue 03 Min Chu 3308) in favor of Zeon Corporation.

Zeon stated that the Shenzhen Intermediate People's Court of China recognized its claim that Haodian Technology and Wang Jian had illegally obtained and used its trade secrets related to adhesives for lithium-ion batteries. Based on the Anti-Unfair Competition Law of the People's Republic of China and other relevant regulations, the court ruled that Haodian Technology and Wang Jian should cease the infringement of the trade secrets in question and pay RMB 1 million (approximately JPY 20 million) to Zeon Corporation.

In response to this situation, on May 28, Haodian Technology issued a solemn statement regarding the false announcement and malicious lawsuit filed by Zeon Corporation.

Haodian Technology stated that neither the company nor its chairman, Wang Jian, had ever illegally obtained or used any trade secrets of Zeon Corporation. As of the date of this statement, the judgment (Case No. (2024) Yue 03 Min Chu 3308) issued by the Shenzhen Intermediate People's Court had not yet officially taken effect. The judgment also stated that the technical information in question had not been used by Zeon Corporation in the actual production of finished products for external sales, and there was no evidence indicating that the company had manufactured or sold related products based on the technical information in question. Considering Zeon's translation fees, legal fees, and other related expenses, the court had discretionarily ordered the company to compensate for economic losses and reasonable legal expenses totaling RMB 1 million, with the court fees to be shared by both Zeon and Haodian. Haodian Technology believed that the above judgment was unfair and had prepared to file an appeal with the Guangdong High People's Court to safeguard the company's business reputation and the personal reputation of its chairman, Wang Jian.

According to information on Haodian Technology's official website, the company was founded in 2011. It is a national-level high-tech enterprise and a "specialized, sophisticated, unique, and new" enterprise driven by technological innovation, focusing on the R&D, production, and sales of functional materials for lithium batteries. The company's headquarters and R&D center are located in Longgang District, Shenzhen, while its production and product testing center is situated in Xiegang Town, Dongguan. Its production sites are located in Longnan City, Jiangxi Province, and Jingmen City, Hubei Province (under construction). Haodian Technology adheres to independent innovation, with multiple products achieving internationally leading performance levels, realizing a breakthrough of "zero" in high-end products in this field in China.