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Expired European patentEurope

Telephone communication system allowing different operation modes with or without encryption

EP 1665846 B1 · Applicant: SAGEM Défense Sécurité

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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 March 19, 2004 and granted May 9, 2007. A European patent lasts at most 20 years from filing, so its term ended March 19, 2024.
  • 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.
FiledMarch 19, 2004
PublishedJune 7, 2006
GrantedMay 9, 2007
Term endedMarch 19, 2024
Application numberEP 04742288
Classification (CPC)H04L9/00 +2 more

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedMarch 19, 2004PublishedJune 7, 2006Patent grantedMay 9, 2007Term endedMarch 19, 2024

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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