Core Viewpoint - TianNai Technology (688116) faces a significant setback as the National Intellectual Property Administration declared its "Cnano and logo" trademark invalid, reversing a previous court ruling in its favor [2][9]. Group 1: Trademark Dispute - The trademark dispute between TianNai Technology and Shandong Dazhan Nano Materials Co., Ltd. has been ongoing for several years, with a previous court ruling in 2023 favoring TianNai Technology [2][6]. - The National Intellectual Property Administration's recent ruling has prompted TianNai Technology to prepare for an appeal to the Beijing Intellectual Property Court [4][5]. - TianNai Technology claims that the trademark "Cnano" has established a strong association with its brand and has significant recognition in the industry [7][8]. Group 2: Market Position and Product Offerings - TianNai Technology specializes in the research, production, and application of carbon nanotubes and graphene, with products including carbon nanotube powder and conductive pastes [3]. - According to GGII statistics, TianNai Technology holds the leading market share in carbon nanotube conductive pastes, with shares of 40.3%, 46.7%, and 53.2% from 2022 to 2024, respectively [3]. Group 3: Company Strategy and Impact - The company has established a comprehensive intellectual property defense system and has registered alternative trademarks to mitigate potential impacts from the current dispute [5]. - TianNai Technology asserts that the trademark dispute will not significantly affect its core competitiveness or operational capabilities, regardless of the court's final decision [5].