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Tips on Creating Patent Drawings for Inventions

Patent drawings could be of immense use if it is provided right at the appropriate time. They serve a very important purpose in the patent application by making them more presentable and rejection-proof. They represent the invention in a way that will explain the patent examiner about how the invention looks like and how it works.

No matter whether you are going to file a utility patent or a design patent for your invention, an accurate patent drawing will convey your invention in a much more proper manner. With a detailed and clear utility patent drawing or design patent drawing, people can help examiners to understand their inventions properly thus we can say that an accurate, clear drawings strengthen and enhance patent applications, helping overloaded patent examiners to understand inventions faster.

All we can say that “A picture speaks a thousand words.” That ancient adage certainly holds true in the case of patent drawings.

This article is aimed at underlining some good practices that can help inventors make their patent application easy to understand:

Tips on Creating Patent Drawings

Paper Quality: Drawings submitted to the patent office like United States Patent and Trademark Office (USPTO) or European Patent Office (EPO) must be made on paper which is flexible, strong, white, smooth, non-shiny, and durable. The paper used to create drawings of your invention should be devoid of any kind of folds or creases so that they can be electronically reproduced in future. The paper size should be 21.6 cm wide and 27.9 cm long.

Care should be taken while creating the margins as there shouldn’t be anything written in the margins. The margins of the paper should be like this:

Top & Left Margin: 2.5 cm

Right Margin: 1.5 cm

Bottom Margin: 1.0 cm

Maintaining the Correct Proportions: Draw all the elements of the same figure in proportion to each other unless a difference in proportion is essential to make the drawing clear.

Using Color: Inventors should refrain from using color in their patent illustrations or patent drawings except in rare cases. The lines used in the drawing should be well-defined, dense and dark so that they can be accurately reproduced in future.

Numbering Elements of a Drawing: Numbering the elements of a utility patent drawing or a design patent drawing is one of the most important elements of crafting a killer patent drawings. The USPTO particularly prefers every element of drawings to be numbered so that they can have a clear outlook of the invention or design.

Assembling Drawings: If you have multiple patent illustrations or patent drawings you are required to assemble all your patent drawings in a single document so that the whole drawing can be assembled without concealing any of the individual figures.


To sum-it up we can say that creating a utility patent drawing or design patent drawing is something that requires clear-cut understanding of the concerned invention, in-depth understanding of patent regulatory norms and expertise in drafting patent applications. The professional services would be required in such a case due to the need of expertise. A good patent application should have patent drawings in them that can represent the invention in a clear way.

PatSketch for best services

We provide the best patent illustration services with the help of our professionals. We prioritize customer satisfaction and provide any number of iterations in the drawings till you are happy with the services. We provide services keeping in mind the rules of respective patent office in which you want to apply for a patent. Visit our website to know more or contact us.

Related articles:

Certification Marks: How to Get one for your Product?

Utility Patent Application: Guide to Filing It

Patent Watch: Do I Really Need one?

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