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Expired European patentEurope

Methods and devices for traversing firewalls and network address translation (nat) installations

EP 1692844 B1 · Applicant: Cisco Systems International Sarl

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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 December 13, 2004 and granted July 20, 2016. A European patent lasts at most 20 years from filing, so its term ended December 13, 2024.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledDecember 13, 2004
PublishedAugust 23, 2006
GrantedJuly 20, 2016
Term endedDecember 13, 2024
Application numberEP 04808879
Classification (CPC)H04L61/00 +2 more

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedDec 13, 2004PublishedAug 23, 2006Patent grantedJuly 20, 2016Term endedDec 13, 2024

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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