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Expired European patentEurope

Polarization separating filter

EP 1183752 B1 · Applicant: Marconi Communications GmbH

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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 May 12, 2000 and granted January 28, 2004. A European patent lasts at most 20 years from filing, so its term ended May 12, 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 November 12, 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.
FiledMay 12, 2000
PublishedMarch 6, 2002
GrantedJanuary 28, 2004
Term endedMay 12, 2020
Application numberEP 00922816
Classification (CPC)H01P1/161

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedMay 12, 2000PublishedMarch 6, 2002Patent grantedJan 28, 2004Term endedMay 12, 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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.