With 48 Software Defined Networks related patents published between 2002 and 2022, AT&T Inc holds the most number of Software Defined Networks patents in the global Automotive sector, of which 83.3% was contributed by its subsidiary At&T Intellectual Property I, L.P.
The second largest number of Software Defined Networks related patents were published by Cisco Systems Inc with 36 patents. The third largest number of Software Defined Networks related patents were published by Deutsche Telekom AG with 16 patents, of which 56.3% was contributed by its subsidiary T-Mobile USA. The fourth largest number of Software Defined Networks related patents were published by Nokia Corp with 16 patents, of which 43.8% was contributed by its subsidiary Alcatel Lucent. The fifth largest number of Software Defined Networks related patents were published by Digital Global Systems, Inc. with 15 patents.
The top five patent holders, i.e., AT&T Inc, Cisco Systems Inc, Deutsche Telekom AG, Nokia Corp, and Digital Global Systems, Inc., together held 131 Software Defined Networks patents during the period.
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