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European application, no grantEurope

New 3-substituted cephalosporins, process for their preparation and their use as medicinal preparations

EP 0477717 A2 · Applicant: BAYER AG

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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 September 16, 1991 and never granted as a European patent. Had it been granted, its 20-year term would have ended September 16, 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 March 16, 2017.
  • 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 16, 1991
PublishedApril 1, 1992
GrantedNever granted
Term endedSeptember 16, 2011
Application numberEP 91115689
Classification (CPC)C07D501/00 +1 more

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedSep 16, 1991PublishedApril 1, 1992Term endedSep 16, 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

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