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:
Feb. 10, 2015
Filed:
Nov. 10, 2011
Tu Dien DO, Waterloo, CA;
Scott Peter Gammon, Waterloo, CA;
John Andrew Mcgregor, Ottawa, CA;
BlackBerry Limited, Waterloo, CA;
Abstract
A token used when a first device authenticates itself to a third device may be associated with a token issue timestamp. Upon receipt of an indication that all previously issued tokens are to be revoked, a second device may store a revocation timestamp. Upon receiving, from the second device, a request for establishing conditions for a file transfer, from the first device, and an indication of a token issue timestamp associated with the request, the second device may compare the token issue timestamp to the revocation timestamp. Responsive to determining, based on the comparing, that the token issue timestamp precedes the revocation timestamp, the second device may deny the request.