H04L 63/0254
Stateful filtering
Official title: {Stateful filtering}
H04L63/0254 (Stateful filtering) appears on 777 US grants and 809 published applications in this corpus.
Search patents in H04L- Granted patents
- 777
- Published applications
- 809
- Assignees
- 296
- Inventors
- 1,390
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 7 | 2 |
| 2002 | 1 | 7 |
| 2003 | 5 | 13 |
| 2004 | 4 | 14 |
| 2005 | 4 | 27 |
| 2006 | 9 | 22 |
| 2007 | 6 | 22 |
| 2008 | 13 | 10 |
| 2009 | 19 | 10 |
| 2010 | 13 | 20 |
| 2011 | 15 | 8 |
| 2012 | 26 | 20 |
| 2013 | 23 | 20 |
| 2014 | 29 | 31 |
| 2015 | 41 | 47 |
| 2016 | 35 | 55 |
| 2017 | 66 | 68 |
| 2018 | 53 | 60 |
| 2019 | 49 | 54 |
| 2020 | 77 | 68 |
| 2021 | 58 | 56 |
| 2022 | 60 | 47 |
| 2023 | 57 | 51 |
| 2024 | 42 | 31 |
| 2025 | 40 | 30 |
| 2026 | 16 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cloud comment storage using per-artifact key25 Aug 2026US 12,719,832 B2Sap SE
- Reassembly free deep packet inspection for peer to peer networks18 Aug 2026US 12,712,888 B2Sonicwall US Holdings Inc.
- Network traffic control method and related system28 Jul 2026US 12,695,722 B2Huawei Cloud Computing Technolgoies Co., Ltd.
- Determining policy rules in a mobile network using subscription data in an application server14 Jul 2026US 12,683,967 B2Lenovo (Singapore) Pte. Ltd.
- Policy and traffic management in an overlay network9 Jun 2026US 12,652,268 B2Google Inc.
- Filtering Network Data Transfers1 Oct 2026US 2026/0303569 A1Centripetal Networks, Inc.
- Machine learning assisted network detection and response1 Oct 2026US 2026/0303630 A1
- Methods and systems for controlling packet delivery24 Sep 2026US 2026/0291914 A1Y.E. Hub Armenia LLC
- Optimized egress for saas app10 Sep 2026US 2026/0270238 A1Cato Networks Ltd
- Systems and Methods for Network Traffic Classification and Filtering via Fingerprinting and Machine Learning13 Aug 2026US 2026/0238615 A1Salesforce, Inc.
Most cited
By later US patents
- Security system for network address translation systems670US 5,793,763 ACisco Technology, Inc. · 1998
- Access control for networks449US 6,219,706 B1Cisco Technology, Inc. · 2001
- Policy caching method and apparatus for use in a communication device based on contents of one data unit in a subset of related data units347US 5,842,040 AStorage Technology Corporation · 1998
- Methods and apparatus for a computer network firewall with proxy reflection322US 6,098,172 ALucent Technologies Inc. · 2000
- System and method for implementing multiple IP addresses on multiple ports318US 6,061,349 ACisco Technology, Inc. · 2000