With 484 Software Defined Networks related patents published between 2002 and 2022, Huawei Investment & Holding Co Ltd holds the most number of Software Defined Networks patents in China, of which 96.7% was contributed by its subsidiary Huawei Technologies Co Ltd.
The second largest number of Software Defined Networks related patents were published by H3C Technologies Co Ltd with 424 patents. The third largest number of Software Defined Networks related patents were published by ZTE Corp with 262 patents. The fourth largest number of Software Defined Networks related patents were published by Beijing University Of Posts And Telecommunications with 238 patents. The fifth largest number of Software Defined Networks related patents were published by State Grid Corporation of China with 216 patents.
The top five patent holders, i.e., Huawei Investment & Holding Co Ltd, H3C Technologies Co Ltd, ZTE Corp, Beijing University Of Posts And Telecommunications, and State Grid Corporation of China, together held 1,624 Software Defined Networks patents during the period.
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