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Expired European patentEurope

Immunogenic cell envelope preparations

EP 0004137 B1 · Applicant: NATIONAL RESEARCH DEVELOPMENT CORPORATION

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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 February 15, 1979 and granted November 11, 1981. A European patent lasts at most 20 years from filing, so its term ended February 15, 1999.
  • 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 15, 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.
FiledFebruary 15, 1979
PublishedSeptember 19, 1979
GrantedNovember 11, 1981
Term endedFebruary 15, 1999
Application numberEP 79300235
Classification (CPC)A61K39/099

Timeline

Timeline From EPO dates

1980198219841986198819901992199419961998Application filedFeb 15, 1979PublishedSep 19, 1979Patent grantedNov 11, 1981Term endedFeb 15, 1999

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.