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Expired European patentEurope

Immunoassay method to determine blood groups

EP 0331808 B1 · Applicant: Biotest AG

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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 10, 1988 and granted July 3, 1991. A European patent lasts at most 20 years from filing, so its term ended December 10, 2008.
  • 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 10, 2014.
  • 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 10, 1988
PublishedSeptember 13, 1989
GrantedJuly 3, 1991
Term endedDecember 10, 2008
Application numberEP 88120671
Classification (CPC)G01N33/80

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedDec 10, 1988PublishedSep 13, 1989Patent grantedJuly 3, 1991Term endedDec 10, 2008

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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