GPI coverage and content

You can use Global Patent Index (GPI) to carry out detailed searches in the EPO's worldwide bibliographic (DOCDB), legal event (INPADOC) and full-text data sets, and download or visualise the search results for statistical analysis.

Current content: 159 823 134 patent documents

This week's update (15/11/2024 12:00 CET):

143 307 new documents added

1 003 170 documents amended

GPI key values

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EP 1668638 A1 20060614 - AN OPTICAL DATA CARRIER

Title (en)

AN OPTICAL DATA CARRIER

Title (de)

OPTISCHER DATENTRÄGER

Title (fr)

SUPPORT DE DONNEES OPTIQUES

Publication

EP 1668638 A1 20060614 (EN)

Application

EP 04727936 A 20040416

Priority

GB 2004001659 W 20040416
GB 0308877 A 20030416

IPC 1-7

G11B 20/00; G11B 23/28; G11B 23/40

IPC 8 full level

G11B 20/00 (2006.01); G11B 23/28 (2006.01); G11B 23/40 (2006.01)

CPC (source: EP)

G03H 1/0252 (2013.01); G11B 20/00086 (2013.01)

Citation (search report)

See references of WO 2004095447A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

WO 2004095447 A1 20041104; EP 1668638 A1 20060614; GB 0308877 D0 20030521

DOCDB simple family (application)

GB 2004001659 W 20040416; EP 04727936 A 20040416; GB 0308877 A 20030416