G06F 2221/2133
Verifying human interaction
Official title: Verifying human interaction, e.g., Captcha
G06F2221/2133 (Verifying human interaction) appears on 820 US grants and 972 published applications in this corpus.
Search patents in G06F- Granted patents
- 820
- Published applications
- 972
- Assignees
- 365
- Inventors
- 1,833
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 3 |
| 2006 | 0 | 1 |
| 2007 | 0 | 4 |
| 2008 | 1 | 3 |
| 2009 | 3 | 18 |
| 2010 | 1 | 16 |
| 2011 | 3 | 23 |
| 2012 | 12 | 31 |
| 2013 | 22 | 45 |
| 2014 | 40 | 58 |
| 2015 | 36 | 73 |
| 2016 | 69 | 92 |
| 2017 | 73 | 118 |
| 2018 | 85 | 76 |
| 2019 | 97 | 64 |
| 2020 | 72 | 85 |
| 2021 | 65 | 66 |
| 2022 | 61 | 53 |
| 2023 | 55 | 55 |
| 2024 | 53 | 38 |
| 2025 | 47 | 29 |
| 2026 | 22 | 21 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Protection against USB hid automation attacks6 Oct 2026US 12,755,062 B2Dell Products L. P.
- Consensus based authentication and authorization process29 Sep 2026US 12,749,363 B2Comcast Cable Communications, LLC
- System and method for user-specific captchas11 Aug 2026US 12,705,327 B1United Services Automobile Association (USAA)
- Computer challenge systems based on image orientation matching28 Jul 2026US 12,694,088 B2Arkose Labs Holdings, Inc.
- Systems, methods and apparatus for evaluating status of computing device user16 Jun 2026US 12,657,492 B2Nobots LLC
- Ai-resistant captcha using watermarking and explainability1 Oct 2026US 2026/0300461 A1Cisco Technology, Inc.
- Responding to a challenge data structure using sound recognition13 Aug 2026US 2026/0236571 A1Arkose Labs Holdings, Inc.
- Method and system for influencing user interactions13 Aug 2026US 2026/0238625 A1HonestyPledge GmbH
- Methods and systems for detecting suspicious or non-suspicious activities involving a mobile device use6 Aug 2026US 2026/0228734 A1Worldpay, LLC
- Inductive Liveness Assessment System and Methodology2 Jul 2026US 2026/0187211 A1Socure, Inc.
Most cited
By later US patents
- Security systems for protecting an asset670US 7,552,467 B22009
- Method for selectively restricting access to computer systems278US 6,195,698 B1Compaq Computer Corporation · 2001
- Liveness detection268US 8,856,541 B1Google Inc. · 2014
- Method, device, and system of generating fraud-alerts for cyber-attacks229US 9,552,470 B2Biocatch Ltd. · 2017
- Device, method, and system of generating fraud-alerts for cyber-attacks219US 10,404,729 B2Biocatch Ltd. · 2019