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Expired European patentEurope

Protection circuit and battery unit

EP 0880214 B1 · Applicant: FUJITSU LIMITED

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Overview

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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 November 25, 1997 and granted November 21, 2007. A European patent lasts at most 20 years from filing, so its term ended November 25, 2017.
  • 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 May 25, 2023.
  • 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.
FiledNovember 25, 1997
PublishedNovember 25, 1998
GrantedNovember 21, 2007
Term endedNovember 25, 2017
Application numberEP 97120658
Classification (CPC)H02J7/61 +2 more

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedNov 25, 1997PublishedNov 25, 1998Patent grantedNov 21, 2007Term endedNov 25, 2017

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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