List by ranking to top 20:
Huawei,Samsung,Qualcomm,LG Electronics,CATL,Panasonic,LG Energy,BOE,Xiaomi,Mitsubishi, Ericsson,Oppo,Sony Group,Nippon,Sharp,Jio,Siemens,Bosch,Fujitsu,NEC.
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For comparison,Huawei became the top patent filer in 2014 and since maintain the lead, filed 3442 PCT applications that year and 6600 in 2024. Many of Jio's PCT patents are in 5G and 6G tech. So, we have atleast two emerging players in telecom - tejas networks and jio.