What are required in patent drawings?

1. The patent drawings should not contain text, unless it is necessary to explain the drawing. Examples: “open,” “closed,” etc. Any text should be a single word. Text needs to be placed so that if pasted over with a translation of the text, none of the drawing would be covered.

2. Patent drawings should be black and white. Lines should be dark, uniformly thick, and well-defined.

3. All numbers, letters, and reference lines must be clear and simple. Numbers and letters should never be put in brackets or circles.

4. Proportion is important. Each element of the drawing should be in the proper proportion to the drawing as a whole and to other elements. The exception is when an element must be enlarged to provide clarity about certain details.

5. Numbers and letters should be at least 0.32 cm. Latin is preferred, but Greek should be used where customary.

6. One sheet can contain multiple figures. If multiple figures on a sheet are meant to be assembled, they should be shown so there is a visual representation of how they would be assembled and what would be the end result.

7. All figures should be drawn in upright positions and arranged without wasting space on the sheet. Each figure should be numbered, using Arabic numerals.

8. On all the drawings, there should be consistency when using signs to indicate particular features.

All of these formatting details are from the U.S. Patent Office, and can be a bit tedious if you are trying to ensure they are all covered. But, with help, the formatting details can be conquered. If you would like our help, please contact us and we will help you ensure the formatting is correct.