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Expired European patentEurope

Technique for obtaining a sign-on certificate from a foreign PKI system using an existing strong authentication PKI system

EP 1175038 B1 · Applicant: Northrop Grumman Corporation

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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 May 31, 2001 and granted July 19, 2006. A European patent lasts at most 20 years from filing, so its term ended May 31, 2021.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledMay 31, 2001
PublishedJanuary 23, 2002
GrantedJuly 19, 2006
Term endedMay 31, 2021
Application numberEP 01112852
Classification (CPC)H04L9/006 +2 more

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedMay 31, 2001PublishedJan 23, 2002Patent grantedJuly 19, 2006Term endedMay 31, 2021

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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