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Expired European patentEurope

Process for purifying IgG monoclonal antibodies and their use

EP 0530447 B1 · Applicant: BIOTEST PHARMA GMBH

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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 27, 1992 and granted October 22, 1997. A European patent lasts at most 20 years from filing, so its term ended May 27, 2012.
  • 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 27, 2017.
  • 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 27, 1992
PublishedMarch 10, 1993
GrantedOctober 22, 1997
Term endedMay 27, 2012
Application numberEP 92108912
Classification (CPC)C07K16/065

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedMay 27, 1992PublishedMarch 10, 1993Patent grantedOct 22, 1997Term endedMay 27, 2012

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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