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Expired European patentEurope

Process for the preparation of acylated cyclic 1,3-dicarbonyl compounds

EP 1034159 B1 · Applicant: ZENECA 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 November 17, 1998 and granted January 22, 2003. A European patent lasts at most 20 years from filing, so its term ended November 17, 2018.
  • 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 17, 2024.
  • 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 17, 1998
PublishedSeptember 13, 2000
GrantedJanuary 22, 2003
Term endedNovember 17, 2018
Application numberEP 98954618
Classification (CPC)C07C315/04 +2 more

Timeline

Timeline From EPO dates

1999200120032005200720092011201320152017Application filedNov 17, 1998PublishedSep 13, 2000Patent grantedJan 22, 2003Term endedNov 17, 2018

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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