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.

Date of Patent:
Sep. 08, 2020

Filed:

Nov. 19, 2018
Applicant:

Master Lock Company Llc, Oak Creek, WI (US);

Inventors:

Nathan Conrad, Oak Creek, WI (US);

Yi Zhang, Oak Creek, WI (US);

Nemanja Stefanovic, Oak Creek, WI (US);

Assignee:

Master Lock Company LLC, Oak Creek, WI (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01); G07C 9/00 (2020.01); H04W 12/08 (2009.01); H04W 12/04 (2009.01); H04W 12/06 (2009.01);
U.S. Cl.
CPC ...
H04W 12/08 (2013.01); G07C 9/00309 (2013.01); G07C 9/00571 (2013.01); H04W 12/04 (2013.01); H04W 12/06 (2013.01); G07C 2009/00404 (2013.01); G07C 2009/00412 (2013.01);
Abstract

A method includes receiving, by a server, a request to revoke the access rights of a user device to a lock; transmitting, by the server, a revocation command to the user device to remove an access credential from the user device; identifying, by the server, one or more trusted devices that have access rights to the lock in response to unsuccessfully transmitting the revocation command to the user device; transmitting, by the server, a key change command to the one or more trusted devices including an updated key to replace a key on the lock; transmitting, by a first one of the one or more trusted devices to encounter the lock, the key change command to the lock; and replacing, by the lock, the key with the updated key such that the user device is unable to access the lock using the access credential.


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