Patent Yard Sign in
Expired European patentEurope

Sulfonamides

EP 0713875 B1 · Applicant: F. Hoffmann-La Roche AG

EPO PDF

Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

Read the whole patent

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.

Google PatentsEPO PDF

Why it's free to use

  • Filed November 13, 1995 and granted March 21, 2001. A European patent lasts at most 20 years from filing, so its term ended November 13, 2015.
  • 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 May 13, 2021.
  • 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.
FiledNovember 13, 1995
PublishedMay 29, 1996
GrantedMarch 21, 2001
Term endedNovember 13, 2015
Application numberEP 95117833
Classification (CPC)C07D405/14 +2 more

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedNov 13, 1995PublishedMay 29, 1996Patent grantedMarch 21, 2001Term endedNov 13, 2015

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.