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Stem cell technology is undergoing a rapid development for its high potential in versatile therapeutic applications. Patent protection is a vital factor affecting the development and commercial success of life sciences inventions; yet human stem cells‐based inventions have been encountering significant restrictions particularly in the perspective of patentable subject matters. This article looks into the patentability limits and unique challenges for human stem cells‐based patents in four regions: Europe, the United States, China, and Japan. We will also provide suggestions for addressing the emerging issues in each region. [ABSTRACT FROM AUTHOR]
