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Expired European patentEurope

Process and intermediate for the preparation of 2-hydroxy-3-sulfido-3-phenyl propanoic acids

EP 0541706 B1 · Applicant: SMITHKLINE BEECHAM CORPORATION

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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 July 31, 1991 and granted September 13, 1995. A European patent lasts at most 20 years from filing, so its term ended July 31, 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 January 31, 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.
FiledJuly 31, 1991
PublishedMay 19, 1993
GrantedSeptember 13, 1995
Term endedJuly 31, 2011
Application numberEP 91915343
Classification (CPC)A61P29/00 +2 more

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedJuly 31, 1991PublishedMay 19, 1993Patent grantedSep 13, 1995Term endedJuly 31, 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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.