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Expired European patentEurope

Method and system for advanced role-based access control in distributed and centralized computer systems

EP 0697662 B1 · Applicant: International Business Machines Corporation

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Overview

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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.

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Why it's free to use

  • Filed August 15, 1994 and granted May 30, 2001. A European patent lasts at most 20 years from filing, so its term ended August 15, 2014.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by February 15, 2020.
  • We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledAugust 15, 1994
PublishedFebruary 21, 1996
GrantedMay 30, 2001
Term endedAugust 15, 2014
Application numberEP 94112649
Classification (CPC)G06F21/604 +1 more

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedAug 15, 1994PublishedFeb 21, 1996Patent grantedMay 30, 2001Term endedAug 15, 2014

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

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