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Expired European patentEurope

Fast response system for switched data networks

EP 0116554 B1 · Applicant: Western Electric Company, Incorporated

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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 March 17, 1983 and granted November 26, 1986. A European patent lasts at most 20 years from filing, so its term ended March 17, 2003.
  • 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 September 17, 2008.
  • 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.
FiledMarch 17, 1983
PublishedAugust 29, 1984
GrantedNovember 26, 1986
Term endedMarch 17, 2003
Application numberEP 83901171
Classification (CPC)G06F16/1794 +2 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedMarch 17, 1983PublishedAug 29, 1984Patent grantedNov 26, 1986Term endedMarch 17, 2003

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.