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European application, no grantEurope

New process for making 17-beta alkanoyl 3-oxo-4-aza-5-alpha-androst-1-enes

EP 0478068 A2 · Applicant: MERCK & CO. INC.

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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 18, 1991 and never granted as a European patent. Had it been granted, its 20-year term would have ended September 18, 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 18, 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 18, 1991
PublishedApril 1, 1992
GrantedNever granted
Term endedSeptember 18, 2011
Application numberEP 91202402
Classification (CPC)A61P15/00 +2 more

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedSep 18, 1991PublishedApril 1, 1992Term endedSep 18, 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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