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Expired European patentEurope

Device and method for compensating polarization mode dispersion in an optical communication system

EP 1171968 B1 · Applicant: Optical Technologies U.S.A. Corp.

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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 March 30, 2000 and granted November 20, 2002. A European patent lasts at most 20 years from filing, so its term ended March 30, 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 September 30, 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.
FiledMarch 30, 2000
PublishedJanuary 16, 2002
GrantedNovember 20, 2002
Term endedMarch 30, 2020
Application numberEP 00917014
Classification (CPC)H04B10/2569 +1 more

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedMarch 30, 2000PublishedJan 16, 2002Patent grantedNov 20, 2002Term endedMarch 30, 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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