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Expired European patentEurope

Methods and apparatus for improved sub-band adaptive filtering in echo cancellation systems

EP 1186158 B1 · Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (publ)

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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 May 29, 2000 and granted January 21, 2009. A European patent lasts at most 20 years from filing, so its term ended May 29, 2020.
  • 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 November 29, 2025.
  • 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.
FiledMay 29, 2000
PublishedMarch 13, 2002
GrantedJanuary 21, 2009
Term endedMay 29, 2020
Application numberEP 00954412
Classification (CPC)H04M9/082

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedMay 29, 2000PublishedMarch 13, 2002Patent grantedJan 21, 2009Term endedMay 29, 2020

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

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