Samsung SDI has issued a strong warning against patent infringement and technology leakage regarding its prismatic battery technology. The company holds a long-standing competitive advantage in this area.
During The Battery Conference, a side event of InterBattery 2026 held at Coex in Seoul on Wednesday, Joo Yong-lak, head of the R&D center at Samsung SDI, emphasized the company’s stance that it will not tolerate any unauthorized use of its proprietary prismatic battery technology. When questioned about competitors recently entering the prismatic battery market, Joo stated, “As a technology leader, we are closely monitoring these developments.”
Joo highlighted the intricate nature of prismatic technology, emphasizing the substantial know-how required in materials, components, design, manufacturing, and process engineering. This complexity, he explained, makes it difficult for new entrants to quickly replicate their technology. “We are also exploring innovative strategies to further differentiate our prismatic technology by integrating it with cutting-edge materials,” he added.
According to Joo, since filing its first US patent for prismatic batteries in 1997, Samsung SDI has accumulated over 1,200 US patents related to prismatic batteries. This is significantly more than its Chinese and Japanese rivals, who hold approximately 600, and domestic competitors, who have only 30-40.
Samsung SDI’s warning comes amidst a surge of competitors accelerating their own prismatic battery development, raising concerns about potential patent disputes. The launch of its new “PrismStack” prismatic battery brand at InterBattery 2026 demonstrates the company’s dedication to defending its intellectual property and technological leadership in prismatic battery solutions.
An industry insider noted, “Concerns about technology leaks are escalating in advanced industries, and Samsung SDI’s public statement reflects a firm commitment to protecting its prismatic battery patents.”
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