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Expired European patentEurope

Nucleic acid ligands and methods for producing the same

EP 0668931 B1 · Applicant: GILEAD SCIENCES, INC.

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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 September 28, 1993 and granted January 4, 2006. A European patent lasts at most 20 years from filing, so its term ended September 28, 2013.
  • 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 March 28, 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.
FiledSeptember 28, 1993
PublishedAugust 30, 1995
GrantedJanuary 4, 2006
Term endedSeptember 28, 2013
Application numberEP 93924904
Classification (CPC)C07H21/00 +2 more

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedSep 28, 1993PublishedAug 30, 1995Patent grantedJan 4, 2006Term endedSep 28, 2013

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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