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Expired European patentEurope

Dwdm catv return system with up-converters to prevent fiber crosstalk

EP 1157493 B1 · Applicant: Koninklijke Philips Electronics N.V.

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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 December 14, 2000 and granted May 21, 2008. A European patent lasts at most 20 years from filing, so its term ended December 14, 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 June 14, 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.
FiledDecember 14, 2000
PublishedNovember 28, 2001
GrantedMay 21, 2008
Term endedDecember 14, 2020
Application numberEP 00985161
Classification (CPC)H04J14/0298 +2 more

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedDec 14, 2000PublishedNov 28, 2001Patent grantedMay 21, 2008Term endedDec 14, 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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