Patent holdings for IPC class H04N 21/254

Total number of patents in this class: 1521

10-year publication summary

34
71
113
170
185
292
236
210
177
123
2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Principal owners for this class

Owner
All patents
This class
Time Warner Cable Enterprises LLC
976
61
AT&T Intellectual Property I, L.P.
10648
60
Nant Holdings IP, LLC
664
51
Sony Corporation
44071
46
Google LLC
30936
44
Broadband Itv, Inc.
77
39
ZTE Corporation
32368
33
DISH Technologies L.L.C.
1376
31
Rovi Guides, Inc.
1894
29
LG Electronics Inc.
60278
25
Gracenote, Inc.
447
25
Samsung Electronics Co., Ltd.
106070
24
The DIRECTV Group, Inc.
1106
20
Nagravision S.A.
786
19
Huawei Technologies Co., Ltd.
65407
18
Sonos, Inc.
1347
18
Maxell, Ltd.
1679
17
Verizon Patent And Licensing Inc.
5315
16
Comcast Cable Communications, LLC
2479
16
The Nielsen Company (US), LLC
2185
16
Other owners 913