H04L 65/1104
Session initiation protocol [sip]
Official title: Session initiation protocol [SIP]
H04L65/1104 (Session initiation protocol [sip]) appears on 5,320 US grants and 6,406 published applications in this corpus.
Search patents in H04L- Granted patents
- 5,320
- Published applications
- 6,406
- Assignees
- 1,018
- Inventors
- 8,184
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2000 | 1 | 0 |
| 2001 | 3 | 9 |
| 2002 | 10 | 124 |
| 2003 | 13 | 162 |
| 2004 | 31 | 192 |
| 2005 | 47 | 250 |
| 2006 | 104 | 357 |
| 2007 | 88 | 405 |
| 2008 | 109 | 368 |
| 2009 | 149 | 377 |
| 2010 | 265 | 344 |
| 2011 | 285 | 300 |
| 2012 | 376 | 292 |
| 2013 | 359 | 278 |
| 2014 | 371 | 352 |
| 2015 | 403 | 341 |
| 2016 | 370 | 338 |
| 2017 | 379 | 274 |
| 2018 | 325 | 250 |
| 2019 | 310 | 231 |
| 2020 | 282 | 226 |
| 2021 | 240 | 210 |
| 2022 | 210 | 202 |
| 2023 | 220 | 177 |
| 2024 | 162 | 115 |
| 2025 | 145 | 135 |
| 2026 | 63 | 97 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Communication method, apparatus, and system for password-free login based on using network resources of telecommunications operators22 Sep 2026US 12,744,825 B2Huawei Technologies Co., Ltd.
- Methods, systems and apparatus for handling maintenance events in public cloud deployments15 Sep 2026US 12,739,227 B2Ribbon Communications Operating Company, Inc.
- Method for realizing communication sessions using a telecommunications network8 Sep 2026US 12,732,548 B2Deutsche Telekom AG
- Voice service routing system for accessibility8 Sep 2026US 12,732,549 B2Comcast Cable Communications, LLC
- Method and system to improve IMS registration failure due to P-CSCF server connection failure25 Aug 2026US 12,719,938 B2Innopeak Technology, Inc.
- Internet protocol multimedia subsystem transaction awareness timing8 Oct 2026US 2026/0313005 A1T-Mobile Innovations LLC
- Voice communication system with automated provisioning1 Oct 2026US 2026/0303725 A1Ipc Systems, Inc.
- Paging method and apparatus1 Oct 2026US 2026/0304383 A1Huawei Technologies Co., Ltd.
- Method And Apparatus For Selective Transmission Of IMS Signaling And Media Data Via Control Plane Or User Plane In A Non-Terrestrial Network24 Sep 2026US 2026/0292001 A1Mediatek Inc.
- Methods, systems, and computer readable media for uniquely identifying session contexts for handling spiral calls in a session initiation protocol (sip) call stateful proxy24 Sep 2026US 2026/0292003 A1Oracle International Corporation
Most cited
By later US patents
- Distributed system to intelligently establish sessions between anonymous users over various networks1,052US 6,564,261 B1Telefonaktiebolaget LM Ericsson (publ) · 2003
- Voice over data telecommunications network architecture778US 6,614,781 B1Level 3 Communications, LLC · 2003
- Method and apparatus for presenting media programs501US 8,839,327 B2AT&T Intellectual Property II, L. P. · 2014
- System, method and article of manufacture for a communication system architecture including video conferencing492US 6,909,708 B1MCI Communications Corporation · 2005
- Monitoring natural interaction for presence detection436US 7,227,937 B1Nortel Networks Limited · 2007