Global Patent Landscape and Technological Trends in Biosafety Level 3 (BSL-3) Laboratories Technologies.

Biosafety Level 3 (BSL-3) laboratories are essential for handling high-risk pathogens and strengthening global health security. This study presents a patent landscape analysis of BSL-3-related technologies using the Derwent World Patents Index (DWPI) to identify technological trends, geographic distribution, patent classifications, and temporal evolution. Patent documents associated with laboratory infrastructure, ventilation systems, containment devices, and biosafety procedures were screened and analyzed. A total of 58 patent documents filed between 2009 and 2024 met the inclusion criteria. The results showed that China and the United States are the leading contributors to BSL-3 patent development, reflecting continued investments in biosafety and biosecurity infrastructure. The most frequent International Patent Classification (IPC) categories were C12M (microbiological devices), E04H (specialized construction infrastructure), and F24F (ventilation and air control systems), highlighting the multidisciplinary nature of innovations in laboratory containment and safety. The temporal trends revealed increases in patent activity following major public health emergencies, including SARS, Ebola, and particularly the COVID-19 pandemic. Furthermore, a significant increase in patent expirations is expected by 2029, creating opportunities for technology transfer, open innovation, and broader access to critical biosafety technologies. These findings emphasize the strategic importance of continued investment in BSL-3 technologies, especially in developing countries with growing biosafety demands.