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Expired European patentEurope

Method of preparing 2-arylbenzimidazole 5-sulphonic acids

EP 0579827 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 January 27, 1993 and granted April 18, 2001. A European patent lasts at most 20 years from filing, so its term ended January 27, 2013.
  • 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 July 27, 2018.
  • 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.
FiledJanuary 27, 1993
PublishedJanuary 26, 1994
GrantedApril 18, 2001
Term endedJanuary 27, 2013
Application numberEP 93914529
Classification (CPC)A61P29/00 +2 more

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedJan 27, 1993PublishedJan 26, 1994Patent grantedApril 18, 2001Term endedJan 27, 2013

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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