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Expired European patentEurope

Method and apparatus for extracting connection information from protocol headers

EP 0689748 B1 · Applicant: International Business Machines Corporation

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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 20, 1993 and granted September 16, 1998. A European patent lasts at most 20 years from filing, so its term ended March 20, 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 September 20, 2018.
  • 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 20, 1993
PublishedJanuary 3, 1996
GrantedSeptember 16, 1998
Term endedMarch 20, 2013
Application numberEP 93906572
Classification (CPC)H04L9/40 +2 more

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedMarch 20, 1993PublishedJan 3, 1996Patent grantedSep 16, 1998Term endedMarch 20, 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

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