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Concept Sketch to Patent Drawing: How to Draw


Concept sketches to patent drawing act as informal references that are crucial and help understand the inventions better. Concept Sketch to patent drawing also help in reducing multiple iterations. This aids in lowering the risk of receiving a rejection from the PTO. Moreover, it is a common practice for inventors to use rough sketches. It helps in passing the idea of their patent drawings to an illustrator since sketching can speed up the visual imagination of a product. Therefore, it is best to create a list of rough sketch alternatives before drafting your patent application. This helps to avoid the creation of poorly designed products.

Also Read: Why Should You Hire a Good Patent Illustrator?

Concept Sketch to Patent Drawing

One often creates rough concept sketch to patent drawings when he does not have a photo reference/any virtual prototype. Moreover, sometimes one needs to invent a new patent-protected product. Thus, in such cases on must carefully go through the relevant prior-arts. This helps them to determine whether their product would violate the patent rights of the competitors. Hence, this makes it possible to invent around such a patent easily and quickly.

Begin with a rough ideation sketch. You must not indulge in making the drawing more artistic or appealing. However, you must add all the necessary details and features. Further, you must define the overall structure of your product more clearly. Your product should appear useful, functional, and durable. Do not worry about perfection and try to prepare a perspective view. You can try any one of the following free software to enhance your ideation sketch:

  • Sketchbook
  • Sketch up
  • Art weaver
  • Microsoft Fresh Paint

Related Article: Preparing Patent Drawings: Key Points to Remember

Tips for Preparing Rough Sketch

Prepare your drawing pencil tipped to 50 to 60 degrees in direction of movement. You should try different marks with a separate color for every separate method. For smooth shading, you can use a blending stick. This will help to show the surface clearly. Moreover, you must share more reference/relevant images with us. If you need to add light shading, please add light at a 45-degree angle that should start from the top left. Further, you must use a very light target point and make light lines as reference. Additionally, you must use the above instructions to create shapes. Try to take a photographic proportion in perspective angle – it is easier to visualize.


Therefore, it is a great idea to develop your style which can match up to an industrial designer. It is not mandatory to complete all the views. However, you must instruct a professional illustrator to add the details based on view features to avoid any confusion. Moreover, you must keep in mind to keep all the sketches as clear as possible to represent the great idea. Define the industrial design and verses for the illustrator to understand the product.

Also Read: How Much Does a Utility Patent Cost You?

Final Thoughts

The above-listed tips are some of the different methods for preparing rough sketches. It provides insights on how such simple information can be helpful to prepare step-by-step sketches. Moreover, it also aids in knowing the areas to focus on when making informal sketches/reference pictures. PatSketch’s patent drawings support team helps businesses in drafting patent applications from your rough sketches. Patent drawings are developed keeping in mind the drawing rules of the concerned PTO. Visit our website to know more about our services.

John Britto (Illustration) and the Editorial Team

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