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Expired European patentEurope

Fluorescent diketopyrrolopyrroles

EP 1087005 B1 · Applicant: Ciba Specialty Chemicals Holding 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 19, 2000 and granted February 25, 2004. A European patent lasts at most 20 years from filing, so its term ended September 19, 2020.
  • 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 19, 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.
FiledSeptember 19, 2000
PublishedMarch 28, 2001
GrantedFebruary 25, 2004
Term endedSeptember 19, 2020
Application numberEP 00810847
Classification (CPC)C09B57/004 +2 more

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedSep 19, 2000PublishedMarch 28, 2001Patent grantedFeb 25, 2004Term endedSep 19, 2020

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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