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Expired European patentEurope

Methods and compositions for inducing sleep

EP 0701444 B1 · Applicant: Purdue Pharma Ltd.

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Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

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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 May 23, 1994 and granted April 7, 2010. A European patent lasts at most 20 years from filing, so its term ended May 23, 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 November 23, 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.
FiledMay 23, 1994
PublishedMarch 20, 1996
GrantedApril 7, 2010
Term endedMay 23, 2014
Application numberEP 94918659
Classification (CPC)C07J51/00 +2 more

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedMay 23, 1994PublishedMarch 20, 1996Patent grantedApril 7, 2010Term endedMay 23, 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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.