System and method for detecting and filtering unsolicited and undesired electronic messages
US8005899B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 17, 2004 |
| Grant date | Aug 23, 2011 |
| Priority date | — |
| Expiry date | Aug 31, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06Q10/107
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A sending device locates and stores identifying information for each electronic message sent by the device. A receiving device, upon receipt of an electronic message, locates identifying information for the electronic message and the purported sending device of the message. The receiving device communicates a confirmation request to the purported sending device which contains identifying information for the message. The sending device receives confirmation messages and replies to such messages confirming that the message was sent if identifying information in the confirmation request corresponds to identifying information stored by the sending device and denying that the message was sent if the identifying information in the confirmation request does not correspond to stored data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.