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Expired European patentEurope

Method and composition for free ligand assays

EP 0103605 B1 · Applicant: EKINS, Roger Philip

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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 March 17, 1983 and granted December 5, 1990. A European patent lasts at most 20 years from filing, so its term ended March 17, 2003.
  • 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 17, 2008.
  • 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 17, 1983
PublishedMarch 28, 1984
GrantedDecember 5, 1990
Term endedMarch 17, 2003
Application numberEP 83900947
Classification (CPC)G01N33/53 +2 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedMarch 17, 1983PublishedMarch 28, 1984Patent grantedDec 5, 1990Term endedMarch 17, 2003

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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