China owns nearly 5 mln valid invention patents: NIPA--China

China owns nearly 5 mln valid invention patents: NIPA--China Economic Net

China owns nearly 5 mln valid invention patents: NIPA--China Economic Net

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Japan , Wenhui , Jiangxi , China , South Korea , United States , Madrid , Spain , Beijing , Republic Of Korea , Liao Yifan , Xinhua , National Intellectual Property Administration , Association Of South East Asian Nations , Patent Cooperation Treaty , Madrid System , South East Asian ,