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Expired European patentEurope

Dihydro-benzo(1,4)oxazines and tetrahydroquinoxalines

EP 1056728 B1 · Applicant: Aventis Pharma Limited

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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 December 23, 1999 and granted November 21, 2007. A European patent lasts at most 20 years from filing, so its term ended December 23, 2019.
  • 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 June 23, 2025.
  • 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.
FiledDecember 23, 1999
PublishedDecember 6, 2000
GrantedNovember 21, 2007
Term endedDecember 23, 2019
Application numberEP 99962463
Classification (CPC)C07D241/38 +2 more

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedDec 23, 1999PublishedDec 6, 2000Patent grantedNov 21, 2007Term endedDec 23, 2019

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.