Weisse, Moltmann & Willems has written a great article on the European Patent Office (EPO) allowing patent applications for Coloured Drawings.

Starting 1 October 2025, the European Patent Office (EPO) will accept colour drawings in European patent applications, a move toward more modern and flexible filing practices.

Background

Previously, only black-and-white drawings were allowed. A decision by the EPO President on 7 July 2025 now permits colour and greyscale drawings, limited to electronic submissions.

Impact for Applicants

This change enables clearer presentation of technical content. Colour can help:

• Reduce interpretation errors
• Illustrate functions and processes
• Distinguish components or material layers

For detailed information, as well as the picture copyright, please see the law firm´s original article here: EPO allows coloured drawings from October 2025 – Patentanwälte Weisse, Moltmann & Willems