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Expired European patentEurope

Method and apparatus for producing an error signal in coherent heterodyne reception of lightwaves

EP 1014604 B1 · Applicant: CONTRAVES SPACE AG

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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 23, 1999 and granted June 22, 2005. A European patent lasts at most 20 years from filing, so its term ended August 23, 2019.
  • 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 23, 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.
FiledAugust 23, 1999
PublishedJune 28, 2000
GrantedJune 22, 2005
Term endedAugust 23, 2019
Application numberEP 99116491
Classification (CPC)H04B10/118 +1 more

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedAug 23, 1999PublishedJune 28, 2000Patent grantedJune 22, 2005Term endedAug 23, 2019

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

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