New – AI-based CPC text categoriser
Access the new AI-based CPC text categoriser from Espacenet
You can now access CPC text categoriser from Espacenet and use it to find relevant CPC symbols and enhance your searches.
Also accessible from the Single Access Portal, CPC text categoriser is powered by AI.
Simply enter a description of the technology of interest. You can use English, French or German and enter from 7 to 1024 words. When you're ready, select Classify.
You'll then see a list of suggested symbols.
You can display the results at main-group or subgroup levels. Under Advanced settings, you can also adjust the confidence level and the number of results displayed, and choose whether to show the confidence level and revision dates in the results.
To retrieve the corresponding data collection, you can then copy and paste the CPC symbols (without spaces) into Espacenet Smart search or Advanced search.
You cannot use CPC text categoriser to find the definitions of classification symbols. Use Espacenet Classification search instead.
Keywords: Espacenet, AI, CPC, classification search
Further information
Related items

From lost in translation to insight – Part II: Office actions in machine-readable format in the EPO Global Dossier

First lecture of the year exploring the European Patent and Unitary Patent Registers

Unleash the full power of patent data

NEW ARTICLE: Why it can be difficult to find a patent document by searching by a number - and how to overcome this challenge

NEW ARTICLE: Don’t miss two essential lectures covering patent families and INPADOC legal event codes from Asia

Espacenet offers a range of materials to help users make the most of the tool

As the volume of patent documents grows worldwide, Espacenet continues to deliver open and reliable access

World Health Day 2025: Reflecting on newborn and maternal health through patent knowledge

PATSTAT EP Register documentation

Updates on the Unitary patent protection INPADOC legal events

Harmonisation of applicant names

Celebrating International Day of Happiness with a smile

Forecasting patent filings

Share your views before 17 March to help steer the Observatory’s future activities

Going round in circles on Pi Day: A short quiz for all!

Unlock powerful features to make your patent search faster, more accurate and more productive

The role of Europe in emerging technologies

Join the competition and submit your proposal by 16 March!

Celebrating the role of women and girls in science and technology communities

Unleash the full power of patent data: analysing emerging technologies

From lost in translation to insight – Part II: Office actions in machine-readable format in the EPO Global Dossier

First lecture of the year exploring the European Patent and Unitary Patent Registers

Unleash the full power of patent data

NEW ARTICLE: Why it can be difficult to find a patent document by searching by a number - and how to overcome this challenge

NEW ARTICLE: Don’t miss two essential lectures covering patent families and INPADOC legal event codes from Asia

Espacenet offers a range of materials to help users make the most of the tool

As the volume of patent documents grows worldwide, Espacenet continues to deliver open and reliable access

World Health Day 2025: Reflecting on newborn and maternal health through patent knowledge

PATSTAT EP Register documentation

Updates on the Unitary patent protection INPADOC legal events

Harmonisation of applicant names

Celebrating International Day of Happiness with a smile

Forecasting patent filings

Share your views before 17 March to help steer the Observatory’s future activities

Going round in circles on Pi Day: A short quiz for all!

Unlock powerful features to make your patent search faster, more accurate and more productive

The role of Europe in emerging technologies

Join the competition and submit your proposal by 16 March!

Celebrating the role of women and girls in science and technology communities

Unleash the full power of patent data: analysing emerging technologies

From lost in translation to insight – Part II: Office actions in machine-readable format in the EPO Global Dossier

First lecture of the year exploring the European Patent and Unitary Patent Registers

Unleash the full power of patent data