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Expired European patentEurope

Quality of service monitor for multimedia communications system

EP 1277331 B1 · Applicant: Telchemy, 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 April 11, 2001 and granted October 29, 2008. A European patent lasts at most 20 years from filing, so its term ended April 11, 2021.
  • 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 11, 2001
PublishedJanuary 22, 2003
GrantedOctober 29, 2008
Term endedApril 11, 2021
Application numberEP 01931139
Classification (CPC)H04L65/80 +2 more

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedApril 11, 2001PublishedJan 22, 2003Patent grantedOct 29, 2008Term endedApril 11, 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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