H04L 63/0236
Filtering by address, protocol, port number or service
Official title: {Filtering by address, protocol, port number or service, e.g. IP-address or URL}
H04L63/0236 (Filtering by address, protocol, port number or service) appears on 4,022 US grants and 4,539 published applications in this corpus.
Search patents in H04L- Granted patents
- 4,022
- Published applications
- 4,539
- Assignees
- 1,123
- Inventors
- 7,433
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 10 | 0 |
| 1999 | 9 | 0 |
| 2000 | 12 | 0 |
| 2001 | 17 | 5 |
| 2002 | 13 | 59 |
| 2003 | 15 | 46 |
| 2004 | 13 | 58 |
| 2005 | 28 | 88 |
| 2006 | 41 | 77 |
| 2007 | 37 | 76 |
| 2008 | 29 | 56 |
| 2009 | 55 | 40 |
| 2010 | 67 | 96 |
| 2011 | 69 | 49 |
| 2012 | 92 | 118 |
| 2013 | 102 | 125 |
| 2014 | 149 | 160 |
| 2015 | 157 | 135 |
| 2016 | 164 | 220 |
| 2017 | 175 | 236 |
| 2018 | 194 | 252 |
| 2019 | 246 | 289 |
| 2020 | 299 | 337 |
| 2021 | 309 | 382 |
| 2022 | 353 | 390 |
| 2023 | 389 | 392 |
| 2024 | 395 | 341 |
| 2025 | 358 | 342 |
| 2026 | 222 | 170 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Zero trust network infrastructure with location service for routing connections via intermediary nodes6 Oct 2026US 12,756,687 B2Akami Technologies, Inc.
- Network security using primary and secondary security group tags6 Oct 2026US 12,756,716 B2Cisco Technology, Inc.
- System and method for provably secure network operations ensuring integrity and availability of distributed network resources6 Oct 2026US 12,756,742 B2Uberspark Inc.
- Intra-LAN network device isolation29 Sep 2026US 12,750,339 B2Avast Software s.r.o.
- Default-deny network egress architecture in a virtual private cloud29 Sep 2026US 12,750,343 B2CrowdStrike, Inc.
- Inline multi-stage attack detection and prevention8 Oct 2026US 2026/0312934 A1Palo Alto Networks, Inc.
- Method for cooperatively filtering data traffic in a communication network8 Oct 2026US 2026/0312935 A1
- User datagram protocol firewall8 Oct 2026US 2026/0312936 A1Microsoft Technology Licensing, LLC
- Secure data routing and randomization8 Oct 2026US 2026/0312937 A1Scatr Corp
- Time-to-live and latency randomization to defeat timing-based relayed dns infiltration8 Oct 2026US 2026/0312973 A1Palo Alto Networks, Inc.
Most cited
By later US patents
- Electronic document delivery system in which notification of said electronic document is sent to a recipient thereof1,055US 5,790,790 ATumbleweed Software Corporation · 1998
- Private, trackable URLs for directed document delivery654US 6,192,407 B1Tumbleweed Communications Corp. · 2001
- Streamlined packet forwarding using dynamic filters for routing and security in a shared forwarding plane603US 8,339,959 B1Juniper Networks, Inc. · 2012
- Access control of networked data559US 6,233,618 B1Content Advisor, Inc. · 2001
- Verifiable service billing for intermediate networking devices555US 8,023,425 B2Headwater Partners I LLC · 2011