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Expired European patentEurope

Data conversion system

EP 1667447 B1 · Applicant: Canopus Co., Ltd.

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Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

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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 September 19, 2003 and granted November 23, 2011. A European patent lasts at most 20 years from filing, so its term ended September 19, 2023.
  • 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.
FiledSeptember 19, 2003
PublishedJune 7, 2006
GrantedNovember 23, 2011
Term endedSeptember 19, 2023
Application numberEP 03818716
Classification (CPC)H04L47/70 +2 more

Timeline

Timeline From EPO dates

2004200620082010201220142016201820202022Application filedSep 19, 2003PublishedJune 7, 2006Patent grantedNov 23, 2011Term endedSep 19, 2023

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.