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Expired European patentEurope

Application modularity in telecommunications exchanges

EP 0546151 B1 · Applicant: TELEFONAKTIEBOLAGET LM ERICSSON

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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 June 16, 1992 and granted April 12, 2000. A European patent lasts at most 20 years from filing, so its term ended June 16, 2012.
  • 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 December 16, 2017.
  • 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.
FiledJune 16, 1992
PublishedJune 16, 1993
GrantedApril 12, 2000
Term endedJune 16, 2012
Application numberEP 92914273
Classification (CPC)H04Q11/0407 +2 more

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedJune 16, 1992PublishedJune 16, 1993Patent grantedApril 12, 2000Term endedJune 16, 2012

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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