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Expired European patentEurope

Use of ritonavir (abt-538) for improving the pharmacokinetics of drugs metabolized by cytochrome p450 in a method of treating aids

EP 0871465 B1 · Applicant: Abbott Laboratories

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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 June 28, 1996 and granted October 2, 2002. A European patent lasts at most 20 years from filing, so its term ended June 28, 2016.
  • 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 28, 2021.
  • 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 28, 1996
PublishedOctober 21, 1998
GrantedOctober 2, 2002
Term endedJune 28, 2016
Application numberEP 96922604
Classification (CPC)A61K31/395 +2 more

Timeline

Timeline From EPO dates

1997199920012003200520072009201120132015Application filedJune 28, 1996PublishedOct 21, 1998Patent grantedOct 2, 2002Term endedJune 28, 2016

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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