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Expired European patentEurope

Metathesis in the presence of ionic liquids

EP 1035093 B1 · Applicant: BAYER AG

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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 February 21, 2000 and granted September 10, 2003. A European patent lasts at most 20 years from filing, so its term ended February 21, 2020.
  • 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 August 21, 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.
FiledFebruary 21, 2000
PublishedSeptember 13, 2000
GrantedSeptember 10, 2003
Term endedFebruary 21, 2020
Application numberEP 00103339
Classification (CPC)C07D225/02 +2 more

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedFeb 21, 2000PublishedSep 13, 2000Patent grantedSep 10, 2003Term endedFeb 21, 2020

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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