Patent figures should clearly represent the subject matter and correspond to the written description. Prepare them with the applicable drawing requirements in mind and review the complete application with the responsible patent professional.
A practical workflow separates original illustration, reference-list preparation, annotation, and final review. Annotra supports the annotation step; an illustrator and the responsible patent professional bring the necessary drawing and filing judgment.
Below, we'll walk through the proper step-by-step procedure for creating patent illustrations that meet USPTO standards.
Step 1: Create the Base Patent Illustrations
The process begins with a professional illustrator (in-house or outsourced) creating the technical drawings. These are usually prepared in vector-based software to ensure clean, precise lines.
For outsourced illustration, American Patent Drawings (APD) is Michael Williams's patent illustration company, providing utility and design patent drawing services. Michael also founded Annotra. The two serve different parts of the workflow: APD creates patent illustrations, while Annotra helps you add and manage reference numbers, leader lines, and figure labels.
Best practices at this stage:
Use black ink lines on a white background.
Keep line weights consistent.
Review color, shading, and text requirements for the application. Shading can be relevant; it is not universally prohibited.
Check view numbering against the applicable rules; the single-view exception means FIG. 1 is not appropriate in every case.
Once the drawings are complete and fully approved internally, the illustrator exports the figures as a multi-page PDF. This locked file will serve as the foundation for numbering and annotation.
Step 2: Prepare the Reference Number List
Next, the patent drafter (attorney, agent, or paralegal) prepares a list of reference numbers to match the specification.
This is best done in a spreadsheet file, formatted as a simple .CSV:
Column A: Reference Number (e.g., 100, 102, 104)
Column B: Corresponding Description (e.g., "housing," "processor," "display screen")
Example:
| Reference Number | Description |
|---|---|
| 100 | Housing |
| 102 | Processor |
| 104 | Display screen |
This file ensures every element has a unique number tied directly to the written disclosure. It also makes it easy to import and manage within Annotra.
Step 3: Import Figures Into Annotra
With both the illustration PDF and the reference list prepared, the next step is importing the drawings into Annotra.
Annotra is a web-based platform built specifically for patent annotation - replacing general-purpose design tools like Illustrator or Visio. Unlike those programs, Annotra is optimized for one thing: drag-and-drop reference number placement.
How it works:
Upload the PDF of your completed drawings into Annotra.
Upload the
.CSVreference number file. Annotra automatically recognizes the numbers and descriptions.Begin placing numbers directly on the figures using a simple drag-and-drop interface.
Step 4: Place and Customize Reference Numbers
Once inside Annotra, you can annotate figures with speed and precision:
Drag-and-Drop Numbers: Simply drag each reference number from the panel and drop it on the appropriate part of the figure.
Automatic Callouts: Annotra creates neat, professional callout lines that can be adjusted for angle, curvature, and endpoint style.
Formatting controls: Set annotation text and leader-line styles, then check the finished figures against the applicable requirements.
Undo/Redo Functions: Mistake? Adjust instantly without reformatting the entire figure.
Annotra ensures that each figure looks clean and consistent, no matter how many numbers are required.
Step 5: Export ready for review Figures
After placing callouts, export the annotated PDF and review the complete figure set before filing.
Key advantages of Annotra's export process:
WYSIWYG Output: What you see in the editor is exactly what appears in the final PDF.
Output review: Check for clipping, misplaced text, and unexpected layout changes in the exported PDF.
Multi-Figure Support: Export entire drawing sets in one file, ready for submission.
Why Annotra is the Essential Step
The real efficiency gain comes from Annotra's ability to integrate seamlessly into the traditional workflow:
Illustrators can focus solely on creating accurate line drawings without worrying about numbering.
Drafters can manage callouts with a simple, intuitive interface.
Firms can use a shared annotation workflow while retaining their own quality-review process.
Evaluate the time required for your own drawing sets, including setup, revisions, and final review. We do not have verified results supporting a universal hours-per-week saving.
START 7-DAY FREE TRIALDrawing review: Annotra is annotation software, not a filing-compliance certification or legal advice. Check the exported figures against the applicable requirements. See the USPTO drawing guidance. Workflow times vary; no guaranteed time saving or examination outcome is claimed.