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Expired European patentEurope

A process and system for objective audio quality measurement

EP 1066623 B1 · Applicant: Her Majesty The Queen In Right Of Canada as represented by the Minister of Industry

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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 25, 1999 and granted June 19, 2002. A European patent lasts at most 20 years from filing, so its term ended March 25, 2019.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by September 25, 2024.
  • 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 25, 1999
PublishedJanuary 10, 2001
GrantedJune 19, 2002
Term endedMarch 25, 2019
Application numberEP 99910059
Classification (CPC)G10L25/69

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedMarch 25, 1999PublishedJan 10, 2001Patent grantedJune 19, 2002Term endedMarch 25, 2019

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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