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Expired European patentEurope

Vitamin D3 fluorinated analogs

EP 0580968 B1 · Applicant: F. HOFFMANN-LA ROCHE 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 May 7, 1993 and granted August 28, 1996. A European patent lasts at most 20 years from filing, so its term ended May 7, 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 November 7, 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.
FiledMay 7, 1993
PublishedFebruary 2, 1994
GrantedAugust 28, 1996
Term endedMay 7, 2013
Application numberEP 93107402
Classification (CPC)C07C401/00 +2 more

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedMay 7, 1993PublishedFeb 2, 1994Patent grantedAug 28, 1996Term endedMay 7, 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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