4 Essential Tips for Crafting Top-Notch Patent Drawings

Securing a patent is an influential means of defending your creation. When you successfully patent your creation, you gain exclusive privileges, preventing others from copying, exploiting, or selling it. Nevertheless, the process of obtaining a patent is not as precise as it may seem. As the saying goes, "An image is worth a thousand words," and in the realm of patent applications, drawings play a climactic role in describing a major aspect of your invention. Thus, ensuring your patent drawings are accurately executed becomes crucial to obtaining a patent. If your invention can be visually represented through sketches, incorporating drawings into your application is a must.

To achieve a successful patent application, it is essential to grasp the fundamentals of patent drawings. Below are some helpful tips on mastering patent drawings.

Black & White

When submitting your drawing to the patent office, it is crucial to stick to precise guidelines. Your drawing must be in black and white, as different shades are not permitted. The lines in the drawing should be thick and well-defined to ensure straightforward examination. Besides, the paper on which you sketch your creation must be free from folds, creases, erasures, or underlining.

To meet the required standards, the paper size should be 21.6 cm broad by 27.9 cm long. Please remember to maintain precise margins on all sides of the page: 2.5 cm on the top and left 1.5 cm on the right, and 1.0 cm at the bottom. While working on your sketch, ensure not to draw anything in the margins, as they should stay clear. Following these guidelines will boost the chances of your submission being accepted by the patent office.


Incorporating hatching in your drawing can effectively emphasize cross-sections, shapes, contours, shadows, and textures. Hatching is a shading technique that involves drawing closely spaced parallel lines. Utilizing this method in your diagram can provide the examiner with a comprehensive understanding of your invention's intricacies.

Number Call Outs

In patent drawings, it is advisable to use numbers as reference characters instead of letters. Every figure in your sketch should be numbered, and the corresponding details must be mentioned in the description. To ensure easy readability, the numbers should be at least 0.32 cm high. If your invention has multiple views depicted in different figures, you should use the same number for repeated parts in the drawing. Additionally, make sure that all numbered parts are adequately described in the accompanying text. A well-organized and properly numbered sketch, along with a comprehensive description, will minimize the chances of rejection during the patent application process.


Multiple figures can be accommodated on a single page. If your creation consists of several components that, when assembled, form a unified product, arrange the illustrations in a manner that portrays individual figures seamlessly combined into a whole. Occasionally, items like tables or machines may require multiple perspectives, such as front or back views. Each of these views should be represented in separate figures on the page.

To meet patent requirements, it is crucial for the drawings to precisely depict the product features and their descriptions. Mastering the fundamentals of patent drawings is vital as it ensures an accurate representation of your invention. Your drawing should portray the invention in its typical, everyday usage form. If needed, you have the option to enlist the expertise of a professional artist or draftsperson to assist you. Additionally, a qualified patent attorney can provide valuable guidance throughout the process of preparing your patent application.

Post a Comment: