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Expired European patentEurope

Oxidation dyeing composition for keratinous fibres comprising a 3,5-diamino-pyridine derivative and a cationic or amphoteric polymer

EP 1274390 B1 · Applicant: L'OREAL

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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 21, 2001 and granted December 21, 2005. A European patent lasts at most 20 years from filing, so its term ended March 21, 2021.
  • 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 21, 2026.
  • 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 21, 2001
PublishedJanuary 15, 2003
GrantedDecember 21, 2005
Term endedMarch 21, 2021
Application numberEP 01919536
Classification (CPC)A61K8/84 +2 more

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedMarch 21, 2001PublishedJan 15, 2003Patent grantedDec 21, 2005Term endedMarch 21, 2021

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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