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

Network license server

Patent 5023907 Issued on June 11, 1991. Estimated Expiration Date: Icon_subject September 30, 2008. 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

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

Computer software protection system
Patent #: 4573119
Issued on: 02/25/1986
Inventor: Westheimer ,   et al.

Software protection method and apparatus
Patent #: 4593353
Issued on: 06/03/1986
Inventor: Pickholtz

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

Software distribution system
Patent #: 4658093
Issued on: 04/14/1987
Inventor: Hellman

Software protection system with trial period usage code and unlimited use unlocking code both recorded on program storage media
Patent #: 4740890
Issued on: 04/26/1988
Inventor: William

Apparatus for controlling the use of computer software
Patent #: 4791565
Issued on: 12/13/1988
Inventor: Dunham ,   et al.

Billing system for computer software
Patent #: 4796181
Issued on: 01/03/1989
Inventor: Wiedemer

Hardware assist for protecting PC software
Patent #: 4866769
Issued on: 09/12/1989
Inventor: Karp

Computer accessing system Patent #: 4891838
Issued on: 01/02/1990
Inventor: Faber

Inventors

Application

No. 252556 filed on 09/30/1988

US Classes:

710/200ACCESS LOCKING

Examiners

Primary: Tarcza, Thomas H.
Assistant: Cain, David

Attorney, Agent or Firm

International Class

H04L 009/00

Abstract

A system for the management of computer programs in a computer network environment is presented. A network license server comprises a license server daemon which provides access to a computer program based on information stored in user and license databases. To track software usage, the daemon also maintains a log file which can be accessed by and interfaced with a network administration station. The network license server protects software vendors from unauthorized use of their software while permitting software programs and users to reside anywhere on the network.

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