The practice team successively visited Hunan Yinfeng New Energy Co., Ltd. and BASF Shanshan Battery Materials Co., Ltd. to conduct on-site research on the enterprise's R&D center and production workshop. At Yinfeng New Energy, the group first listened to the introduction of the company's main business and the layout of the entire industry chain, and then walked into the stack automation production line to observe the production process of the third-generation blade flow battery stack. Both parties discussed the current situation and research and development trends of all vanadium flow batteries. Yinfeng New Energy shared its pure chemical vanadium electrolyte preparation technology, which is the first in the world to use pure chemical methods to green prepare all vanadium flow battery electrolytes, and a technology system constructed with nearly 80 patents. Combined with the physical product, the design ideas of the stack structure were introduced. Both parties had in-depth exchanges on the patent protection points of energy storage systems and intelligent power management technology. At BASF's Shanshan Changsha base, the company highlighted its research and development direction and advanced preparation technology for lithium-ion battery cathode materials, as well as its cutting-edge layout in the fields of ultra-high nickel, lithium rich manganese materials, and solid-state batteries; In the energy storage system seminar, both parties exchanged insights on technological development trends, followed by visits to intelligent production bases and battery performance testing laboratories to conduct technical exchanges on the application of testing data in patent validity judgment.

"This practice activity has realized the two-way rush of 'review demand' and 'industrial demand'." Zhou Yana, Deputy Director of the Electrical Appeals Division I of the Reexamination Team 2 of the Reexamination and Invalidation Review Department of the Patent Office of the China National Intellectual Property Administration, said that the technological innovation practice of Xiangjiang New Area has provided a fresh sample for the review work, especially the cases such as the electrolyte preparation technology of Yinfeng New Energy and the research and development of positive materials of BASF Shanshan, which are of great reference value. Later, the industrial demand fed back by enterprises will be integrated into the process of improving the review standards to further improve the quality of patent review work. Feng Yong, member of the Party Group and Deputy Director of the Commerce and Market Supervision Bureau of Xiangjiang New Area, emphasized the "intellectual property+industry" dual drive development strategy of the new area. It is reported that, as the practice base for patent examiners of the China National Intellectual Property Administration launched in 2016, Hunan Xiangjiang New Area has continuously deepened the construction of the base's functions for many years, forming a precise service mode of "enterprise ordering, base dispatching, and examiners receiving orders": by carrying out review practice activities, organize examiners to go deep into enterprises in the fields of engineering machinery, advanced energy storage, biomedicine, etc., to solve practical problems such as patent mining, application document writing, and infringement risk prevention and control; At the same time, relying on the resources of the base, we will promote services such as "rapid patent pre-approval" and "navigation warning" to cover enterprises, and compress the average authorization period of invention patents to 3.5 months. The implementation of the practical training for the review team has further improved the "creation protection application" full chain service system. In the future, the new area will continue to expand the radiation range of the base, promote more small and medium-sized innovative enterprises to share professional review resources, and provide solid support for building a national important advanced manufacturing highland. (Reporter Yin Ting from Xiangjiang Morning Post)