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Expired European patentEurope

Optical packet routing network system based on optical label switching technique

EP 1499077 B1 · Applicant: Nippon Telegraph and Telephone Corporation

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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 August 25, 2000 and granted March 7, 2012. A European patent lasts at most 20 years from filing, so its term ended August 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 February 25, 2026.
  • 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.
FiledAugust 25, 2000
PublishedJanuary 19, 2005
GrantedMarch 7, 2012
Term endedAugust 25, 2020
Application numberEP 04077739
Classification (CPC)H04Q11/0062 +1 more

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedAug 25, 2000PublishedJan 19, 2005Patent grantedMarch 7, 2012Term endedAug 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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