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Expired European patentEurope

PYRROLO 2,3-d]PYRIMIDINE DERIVATIVE, PROCESS FOR PREPARING THE SAME, AND PHARMACEUTICAL PREPARATION COMPRISING THE DERIVATIVE AS ACTIVE INGREDIENT

EP 0514540 B1 · Applicant: TEIJIN LIMITED

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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 September 19, 1990 and granted July 17, 1996. A European patent lasts at most 20 years from filing, so its term ended September 19, 2010.
  • 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 March 19, 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.
FiledSeptember 19, 1990
PublishedNovember 25, 1992
GrantedJuly 17, 1996
Term endedSeptember 19, 2010
Application numberEP 90913731
Classification (CPC)C07D487/04

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedSep 19, 1990PublishedNov 25, 1992Patent grantedJuly 17, 1996Term endedSep 19, 2010

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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