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Expired European patentEurope

Liquid crystalline medium

EP 0712918 B1 · Applicant: MERCK PATENT 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 March 30, 1991 and granted June 12, 2002. A European patent lasts at most 20 years from filing, so its term ended March 30, 2011.
  • 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, 2016.
  • 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, 1991
PublishedMay 22, 1996
GrantedJune 12, 2002
Term endedMarch 30, 2011
Application numberEP 95120484
Classification (CPC)C09K19/44 +2 more

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedMarch 30, 1991PublishedMay 22, 1996Patent grantedJune 12, 2002Term endedMarch 30, 2011

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.