The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 01, 2010
Filed:
Mar. 27, 2007
Richard Frenkel, Swampscott, MA (US);
Nat Tuck, Rockport, MA (US);
Richard Frenkel, Swampscott, MA (US);
Nat Tuck, Rockport, MA (US);
Other;
Abstract
An anti-UCE system comprises a certificate issuance module configured to issue certificates to e-mail users and to maintain a registry of issued certificates with an indication of validity for each issued certificate. There is a plurality of possible certificates, each having a class with associated terms of service defining e-mail transmission limitations for the class. A certificate status module determines whether e-mail signed using the certificate violates the terms of service for the class. A filter module receives e-mails intended for e-mail users, and is configured to determine if a received e-mail is signed with a certificate from the plurality of certificates and, if signed, to determine from the certificate status module if the certificate is valid based on an identity of the sender and a class indicated in the certificate, and to forward the e-mail to an intended e-mail user if the certificate is valid.