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Expired European patentEurope

Electrochromic system

EP 1029256 B1 · Applicant: Bayer Aktiengesellschaft

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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 October 22, 1998 and granted January 15, 2003. A European patent lasts at most 20 years from filing, so its term ended October 22, 2018.
  • 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 April 22, 2024.
  • 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.
FiledOctober 22, 1998
PublishedAugust 23, 2000
GrantedJanuary 15, 2003
Term endedOctober 22, 2018
Application numberEP 98965138
Classification (CPC)G02F1/161

Timeline

Timeline From EPO dates

1999200120032005200720092011201320152017Application filedOct 22, 1998PublishedAug 23, 2000Patent grantedJan 15, 2003Term endedOct 22, 2018

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.