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Expired European patentEurope

Method for racemization of optically active azetidine-2-Carboxylate

EP 1201653 B1 · Applicant: Sumitomo Chemical Company, Limited

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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 12, 1999 and granted April 20, 2005. A European patent lasts at most 20 years from filing, so its term ended May 12, 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 November 12, 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.
FiledMay 12, 1999
PublishedMay 2, 2002
GrantedApril 20, 2005
Term endedMay 12, 2019
Application numberEP 02002152
Classification (CPC)C07D205/04

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedMay 12, 1999PublishedMay 2, 2002Patent grantedApril 20, 2005Term endedMay 12, 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

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