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:
Dec. 04, 2012

Filed:

Jun. 01, 2009
Applicants:

Jung Hoon Ahn, Suwon-si, KR;

Young Gun Chun, Suwon-si, KR;

Inventors:

Jung Hoon Ahn, Suwon-si, KR;

Young Gun Chun, Suwon-si, KR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M 3/16 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method and system for protecting against unauthorized use of a mobile terminal operating with a subscriber identity module (SIM) card is provided. The method for protecting against unauthorized use of a terminal operating with a subscriber identity module (SIM) card compares a secondary version of a temporary identity information stored in a storage unit and a primary version of the temporary identity information stored in the SIM card; sends a message containing a unique identity information to a network when the primary version and the secondary version of the temporary identity information differ from each other; and restricts operation of a function of the terminal when a registration reject message is received in response to the message containing the unique identity information.


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