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Expired European patentEurope

Method of forming plated product using negative photoresist composition

EP 1761823 B1 · Applicant: TOKYO OHKA KOGYO CO., LTD.

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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 10, 2005 and granted December 21, 2011. A European patent lasts at most 20 years from filing, so its term ended May 10, 2025.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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 10, 2005
PublishedMarch 14, 2007
GrantedDecember 21, 2011
Term endedMay 10, 2025
Application numberEP 05738524
Classification (CPC)G03F7/0035 +2 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedMay 10, 2005PublishedMarch 14, 2007Patent grantedDec 21, 2011Term endedMay 10, 2025

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

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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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