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Expired European patentEurope

1,7-Dihydro-pyrrolo(3,4-e)(1,4)Diazepin-2(3H)-one derivatives, a process for preparing them and their use as anticonvulsant and antianxiety agents

EP 0102602 B1 · Applicant: GRUPPO LEPETIT S.p.A.

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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 August 27, 1983 and granted March 21, 1990. A European patent lasts at most 20 years from filing, so its term ended August 27, 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 February 27, 2009.
  • 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.
FiledAugust 27, 1983
PublishedMarch 14, 1984
GrantedMarch 21, 1990
Term endedAugust 27, 2003
Application numberEP 83108446
Classification (CPC)C07D487/04 +2 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedAug 27, 1983PublishedMarch 14, 1984Patent grantedMarch 21, 1990Term endedAug 27, 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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