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Expired European patentEurope

Method and system of managing and filtering electronic messages using cryptographic techniques

EP 1842313 B1 · Applicant: Certicom Corp.

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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 January 20, 2006 and granted May 6, 2015. A European patent lasts at most 20 years from filing, so its term ended January 20, 2026.
  • 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.
FiledJanuary 20, 2006
PublishedOctober 10, 2007
GrantedMay 6, 2015
Term endedJanuary 20, 2026
Application numberEP 06701776
Classification (CPC)H04L63/126 +2 more

Timeline

Timeline From EPO dates

2007200920112013201520172019202120232025Application filedJan 20, 2006PublishedOct 10, 2007Patent grantedMay 6, 2015Term endedJan 20, 2026

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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