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Expired European patentEurope

Process of reducing a loweralkyl 1-loweralkyl-pyrrole-2-glyoxylate to a loweralkyl 1-loweralkyl-pyrrole-2-acetate

EP 0010553 B1 · Applicant: McNeilab, Inc.

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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 October 27, 1978 and granted May 18, 1983. A European patent lasts at most 20 years from filing, so its term ended October 27, 1998.
  • 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 April 27, 2004.
  • 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.
FiledOctober 27, 1978
PublishedMay 14, 1980
GrantedMay 18, 1983
Term endedOctober 27, 1998
Application numberEP 78101245
Classification (CPC)C07D207/337

Timeline

Timeline From EPO dates

1979198119831985198719891991199319951997Application filedOct 27, 1978PublishedMay 14, 1980Patent grantedMay 18, 1983Term endedOct 27, 1998

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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