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Expired European patentEurope

Valve for the treatment of hydrocephalus

EP 0670740 B1 · Applicant: DREVET, Jean-Baptiste

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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 30, 1993 and granted June 16, 1999. A European patent lasts at most 20 years from filing, so its term ended November 30, 2013.
  • 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 30, 2019.
  • 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 30, 1993
PublishedSeptember 13, 1995
GrantedJune 16, 1999
Term endedNovember 30, 2013
Application numberEP 94900891
Classification (CPC)G05D16/2086 +2 more

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedNov 30, 1993PublishedSep 13, 1995Patent grantedJune 16, 1999Term endedNov 30, 2013

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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