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Expired European patentEurope

Novel physiologically active proteinaceous substance

EP 0143850 B1 · Applicant: KYOWA HAKKO KOGYO CO., LTD.

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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 March 29, 1984 and granted February 28, 1990. A European patent lasts at most 20 years from filing, so its term ended March 29, 2004.
  • 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 September 29, 2009.
  • 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.
FiledMarch 29, 1984
PublishedJune 12, 1985
GrantedFebruary 28, 1990
Term endedMarch 29, 2004
Application numberEP 84901399
Classification (CPC)C07K14/4705

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedMarch 29, 1984PublishedJune 12, 1985Patent grantedFeb 28, 1990Term endedMarch 29, 2004

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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