Patent Yard Sign in
Expired European patentEurope

Measurement of the eye-opening of optical signals by optical sampling

EP 0884868 B1 · Applicant: NORTHERN TELECOM LIMITED

EPO PDF

Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

Read the whole patent

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.

Google PatentsEPO PDF

Why it's free to use

  • Filed May 11, 1998 and granted April 20, 2005. A European patent lasts at most 20 years from filing, so its term ended May 11, 2018.
  • 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 November 11, 2023.
  • 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 11, 1998
PublishedDecember 16, 1998
GrantedApril 20, 2005
Term endedMay 11, 2018
Application numberEP 98303661
Classification (CPC)H04L1/20

Timeline

Timeline From EPO dates

1999200120032005200720092011201320152017Application filedMay 11, 1998PublishedDec 16, 1998Patent grantedApril 20, 2005Term endedMay 11, 2018

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.