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Expired European patentEurope

Update of header compression state in packet communications

EP 1157520 B1 · Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (publ)

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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 25, 2000 and granted May 10, 2006. A European patent lasts at most 20 years from filing, so its term ended February 25, 2020.
  • 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 25, 2025.
  • 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 25, 2000
PublishedNovember 28, 2001
GrantedMay 10, 2006
Term endedFebruary 25, 2020
Application numberEP 00914405
Classification (CPC)H04L69/04 +1 more

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedFeb 25, 2000PublishedNov 28, 2001Patent grantedMay 10, 2006Term endedFeb 25, 2020

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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