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Expired European patentEurope

Method and system for speech quality prediction of an audio transmission system

EP 1611571 B1 · Applicant: Koninklijke KPN N.V.

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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 February 26, 2004 and granted December 12, 2007. A European patent lasts at most 20 years from filing, so its term ended February 26, 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.
FiledFebruary 26, 2004
PublishedJanuary 4, 2006
GrantedDecember 12, 2007
Term endedFebruary 26, 2024
Application numberEP 04714792
Classification (CPC)G10L25/69

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedFeb 26, 2004PublishedJan 4, 2006Patent grantedDec 12, 2007Term endedFeb 26, 2024

Sources & verification

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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

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