As Yushu Technology was making a full push toward its IPO and steadily advancing into the capital market, a sudden patent lawsuit nearly became a major obstacle on its path to listing. The party initiating this lawsuit was neither an industry peer nor a technology competitor, but rather a Hangzhou-based company primarily engaged in daily chemicals and food sales—Lu Wei Mei.
This seemingly ordinary intellectual property dispute eventually caught the attention of the Supreme People's Court.
Recently, with the final judgment issued, the truth has come to light: all of Lu Wei Mei's appeals were rejected, and the first-instance ruling was upheld. Notably, the Supreme Court used unusually strong language in its verdict, directly stating that the company's actions were "both meticulously calculated and capricious," clearly identifying the lawsuit as a violation of good faith principles and condemning it in accordance with the law.
The core of the dispute revolves around an invention patent named "Electronic Dog," categorized as a household smart robotics device, originally applied for by Zhejiang Jianlin Electronic & Electric Co., Ltd. in 2016.
In 2025, this patent underwent a series of unusually frequent transfers: in January, Jianlin transferred it to Hangzhou Lianhao Technology Trading Co., Ltd.; on June 25, the patent changed hands again, this time to Lu Wei Mei.
Remarkably, just five days after acquiring the patent, on July 1, 2025, Lu Wei Mei formally filed a patent infringement lawsuit against Yushu Technology.
Business registration information shows that Lu Wei Mei and Jianlin share the same legal representative—Zhou Jianjun—indicating a direct relationship between the two companies.
According to Zhou Jianjun's account, Jianlin was facing operational difficulties at the time, including bank debts, frozen accounts, and unpaid employee wages. The patent transfer was initially intended for mortgage financing as a self-rescue measure, but successive attempts failed. Zhou denied that the patent acquisition was for litigation purposes. However, Lu Wei Mei's main business involves food and general merchandise sales, completely unrelated to smart robotics technology, and it has never actually manufactured or sold any products related to the patent in question.
This series of actions precisely coincided with the critical window of Yushu Technology's IPO, making its targeted nature evident.
The focus of the lawsuit was whether Yushu's Gox robotic dog infringed upon the electronic dog invention patent held by Lu Wei Mei.
Lu Wei Mei claimed that the Gox robotic dog fully incorporated technical features described in the patent, such as color-changing bionic fur, liquid level sensors, and gas sensors, constituting both direct and equivalent infringement. The company also accused Yushu's product of damaging its commercial reputation and squeezing its market share, allegedly causing losses exceeding 200 million yuan.
Yushu Technology explicitly denied infringement, stating that the Gox robotic dog does not possess the three key technical features mentioned and that the infringement claims were baseless. Yushu characterized the opposing party's actions as a typical malicious lawsuit aimed at disrupting normal business operations during the critical IPO period.
After a rigorous technical comparison, the first-instance court determined that Yushu's Gox robotic dog is equipped with LiDAR for environmental 3D perception and intelligent obstacle avoidance, which is entirely different in function, structure, and effect from the gas sensors described in the patent for detecting gases. The overall product design and technical solutions were found to be substantially different from the patent in question.
Accordingly, the first-instance court dismissed all of Lu Wei Mei's claims. Dissatisfied with the ruling, Lu Wei Mei appealed to the Supreme People's Court.
The Supreme Court, after review, confirmed that the facts identified in the first instance were clear and the application of law was correct, ultimately ruling to dismiss the appeal and uphold the original judgment.
Simultaneously, the Supreme Court issued a severe characterization of Lu Wei Mei's litigation conduct: filing a lawsuit just five days after acquiring the patent, despite having no relation to its business scope and never manufacturing any related products; making capricious changes to the claimed damages—stating profits of tens of millions in the first instance but claiming only 500 yuan, then suddenly increasing the claim to 80 million yuan during the second instance, only to revert to 500 yuan the day after the inquiry ended; with an obvious intent to avoid high case acceptance fees while exerting significant litigation pressure on Yushu Technology.
The court's description of the actions as "both meticulously calculated and capricious" and "violating the principle of good faith, for which this court condemns [them]" represents a clear judicial rejection of malicious litigation practices.