Chapter V – Drawings

A revised version of this publication entered into force.

This chapter summarises the requirements for drawings in international applications.

An international application must contain drawings where they are necessary to understand the invention. Where they are not, but the nature of the invention admits of illustration by drawings, they are optional.

Art. 3(2), Art. 7
PCT AG I 5.128

1. Graphic forms of presentation considered to be drawings

2. Presentation of drawings

3. Requirements regarding the paper used

4. Presentation of the sheets of drawings

5. General layout of drawings

6. Prohibited matter

7. Execution of drawings

8. Text matter in drawings

9. Conventional symbols

10. Amendments to drawings

11. Graphic forms of presentation not considered to be drawings