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Expired European patentEurope

Circuitry implementing the Viterbi algorithm

EP 0398690 B1 · Applicant: NOKIA MOBILE PHONES LTD.

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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 16, 1990 and granted September 25, 1996. A European patent lasts at most 20 years from filing, so its term ended May 16, 2010.
  • 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 16, 2015.
  • 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 16, 1990
PublishedNovember 22, 1990
GrantedSeptember 25, 1996
Term endedMay 16, 2010
Application numberEP 90305301
Classification (CPC)H03M13/41

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedMay 16, 1990PublishedNov 22, 1990Patent grantedSep 25, 1996Term endedMay 16, 2010

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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