U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Apparatus and method for licensing software on a network of computers

Patent 5138712 Issued on August 11, 1992. Estimated Expiration Date: Icon_subject October 2, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Cryptographic communication security for single domain networks
Patent #: 4238853
Issued on: 12/09/1980
Inventor: Ehrsam ,   et al.

Security system for electronic funds transfer system
Patent #: 4259720
Issued on: 03/31/1981
Inventor: Campbell

Apparatus and method for preventing unauthorized use of computer programs
Patent #: 4458315
Issued on: 07/03/1984
Inventor: Uchenick

Computer security system
Patent #: 4584639
Issued on: 04/22/1986
Inventor: Hardy

Protected software access control apparatus and method
Patent #: 4652990
Issued on: 03/24/1987
Inventor: Pailen ,   et al.

Method for multiple programs management within a network having a server computer and a plurality of remote computers
Patent #: 4780821
Issued on: 10/25/1988
Inventor: Crossley

Distributed authorization system
Patent #: 4891503
Issued on: 01/02/1990
Inventor: Jewell

Distributed security procedure for intelligent networks
Patent #: 4919545
Issued on: 04/24/1990
Inventor: Yu

License mangagement system and license storage key
Patent #: 4924378
Issued on: 05/08/1990
Inventor: Hershey, et al.

Software licensing management system
Patent #: 4937863
Issued on: 06/26/1990
Inventor: Robert, et al.

More ...

Inventor

Application

No. 415984 filed on 10/02/1989

US Classes:

705/59, Licensing709/229, Network resources access controlling717/176Network

Examiners

Primary: Shaw, Gareth D.
Assistant: Loomis, John C.

Attorney, Agent or Firm

Foreign Patent References

  • PCT/US87/02301 WO. 03/12/1988

International Class

G06F 012/14

Abstract

The present invention provides to the software application the verification and license check out functions which are normally performed by a license server of a network software license system. The encrypted license information is contained in a license token, and is sorted in the database controlled by the license server. In contrast to the prior art where the license server either grants or denies the request after verifying the user's credentials, the license server in the preferred embodiment of the present invention finds the correct license token for the software application and transmits the license token to the licensing library. In application specific license access module attached to the application decodes the licensing token. Routines in the licensing library coupled to the software application verify the license information before checking out the license and updating the license token. The application specific license access module then encodes the updated license token before returning it to the license server. Thus, the impact of breaching the encryption/decryption of an application is limited to only one application. As a result, the present invention provides improved network-wide protection against unauthorized use of software applications in a network of computers.

PatentsPlus Images
Enhanced PDF formats
loading...
PatentsPlus: add to cart
PatentsPlus: add to cartSearch-enhanced full patent PDF image
$9.95more info
PatentsPlus: add to cart
PatentsPlus: add to cartIntelligent turbocharged patent PDFs with marked up images
$18.95more info
 
Sign InRegister
Username  
Password   
forgot password?