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Expired European patentEurope

Method of assaying antithrombin iii activity and reagent kit therefor

EP 0657547 B1 · Applicant: NIPPON SHOJI KABUSHIKI KAISHA, 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 June 27, 1994 and granted April 18, 2001. A European patent lasts at most 20 years from filing, so its term ended June 27, 2014.
  • 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 December 27, 2019.
  • 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.
FiledJune 27, 1994
PublishedJune 14, 1995
GrantedApril 18, 2001
Term endedJune 27, 2014
Application numberEP 94918573
Classification (CPC)C12Q1/56

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedJune 27, 1994PublishedJune 14, 1995Patent grantedApril 18, 2001Term endedJune 27, 2014

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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