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Expired European patentEurope

Dichroic light polarizers

EP 1158320 B1 · Applicant: Optiva, Inc.

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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 November 17, 1995 and granted August 6, 2008. A European patent lasts at most 20 years from filing, so its term ended November 17, 2015.
  • 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 May 17, 2021.
  • 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.
FiledNovember 17, 1995
PublishedNovember 28, 2001
GrantedAugust 6, 2008
Term endedNovember 17, 2015
Application numberEP 01119900
Classification (CPC)C09B3/50 +2 more

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedNov 17, 1995PublishedNov 28, 2001Patent grantedAug 6, 2008Term endedNov 17, 2015

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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