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: 157 117 910 patent documents

This week's update (12/07/2024 12:00 CET):

139 301 new documents added

1 340 825 documents amended

GPI key values

Run regular monitoring (e.g. monthly or quarterly) of technical areas or companies

Use built-in charts to visualise technical trends and patenting activity of companies

Choose the data you want to see and download to focus on what you are interested in

Run data quality assessments to measure the risk of incomplete search results

EP 4115711 A1 20230111 - DIRECT-CURRENT DUAL POLARITY, LIGHT-EMITTING LED CIRCUIT

Title (en)

DIRECT-CURRENT DUAL POLARITY, LIGHT-EMITTING LED CIRCUIT

Title (de)

LICHTEMITTIERENDE LED-GLEICHSTROMSCHALTUNG MIT DUALER POLARITÄT

Title (fr)

CIRCUIT À DEL ÉLECTROLUMINESCENTES À DOUBLE POLARITÉ ET À COURANT CONTINU

Publication

EP 4115711 A1 20230111 (EN)

Application

EP 21717326 A 20210221

Priority

EP 20161953 A 20200310
EP 2021054250 W 20210221

IPC 8 full level

H05B 45/46 (2020.01); H05B 45/52 (2020.01); H05B 47/24 (2020.01)

CPC (source: EP)

H05B 45/46 (2020.01); H05B 45/52 (2020.01); H05B 47/24 (2020.01)

Citation (search report)

See references of WO 2022174923A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

EP 4115711 A1 20230111

DOCDB simple family (application)

EP 21717326 A 20210221