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Expired European patentEurope

Master unit communication system and method for operation thereof

EP 1869836 B1 · Applicant: Beckhoff Automation GmbH

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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 April 1, 2006 and granted March 25, 2009. A European patent lasts at most 20 years from filing, so its term ended April 1, 2026.
  • 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.
FiledApril 1, 2006
PublishedDecember 26, 2007
GrantedMarch 25, 2009
Term endedApril 1, 2026
Application numberEP 06723950
Classification (CPC)H04L12/437

Timeline

Timeline From EPO dates

2007200920112013201520172019202120232025Application filedApril 1, 2006PublishedDec 26, 2007Patent grantedMarch 25, 2009Term endedApril 1, 2026

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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