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Expired European patentEurope

Semiconductor devices

EP 0202727 B1 · Applicant: Northern Telecom Europe 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 February 10, 1986 and granted January 8, 1992. A European patent lasts at most 20 years from filing, so its term ended February 10, 2006.
  • 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 August 10, 2011.
  • 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.
FiledFebruary 10, 1986
PublishedNovember 26, 1986
GrantedJanuary 8, 1992
Term endedFebruary 10, 2006
Application numberEP 86300865
Classification (CPC)H10P76/4085

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedFeb 10, 1986PublishedNov 26, 1986Patent grantedJan 8, 1992Term endedFeb 10, 2006

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.