PatentFig AI

An AI drawing tool for patent practitioners that can generate line drawings, flowcharts and exploded views from text, photos or sketches, with editable markers, and can be typeset and exported in accordance with the specifications of six patent offices.

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Updated: 2026-10-26

What is PatentFig AI?

PatentFig AI addresses the most tedious part of the patent process: after clarifying an invention, you still have to draw attached drawings that comply with the formats of various patent offices. Officially, it generates line drawings, 3D renderings, flowcharts and exploded views from text, photos or sketches, and typesets them in accordance with the rules of six patent offices: USPTO, EPO, PCT, CNIPA, JPO and KIPO. For patent agents, it saves not only the time spent on drawing but also the back-and-forth communications after formal examination rejections. It treats attached drawings as versioned and verifiable documents rather than one-time generated images.

Who is it for?

Patent attorneys who need to prepare multiple sets of patent drawings every week.
Corporate intellectual property departments that refine the attached drawings internally before submitting them to external parties.
Independent inventors with limited budgets who still need to pass formal examination.
Design firms that prepare application materials as supporting services for clients.
Foreign application agencies that need to generate versions for multiple offices from the same set of drawings.

Key features

Multimodal Input

Text descriptions, product photos, hand-drawn sketches, and CAD screenshots can all serve as a starting point. There is no need for a clean line draft in advance; the system can accept any materials provided by the inventor. Even messy sketches are usable, but the structural relationships must be clearly explained in the description.

Editable drawing marks

The official emphasizes that marks are layers rather than numbers burned into pixels. They can be dragged to add, modify their pointers, and renumbered. Changing one number does not require redrawing the entire figure.

Numbering Verification

It prompts for duplicate marks, blank labels and cross-leads before saving, reducing the most common rejection reasons in the formal examination stage. The verification is triggered before saving, which is more cost-effective than receiving a correction notice after submission.

Multi-office Formatting

Outputs in accordance with the page size, margins, figure numbering and page number rules of the target patent office; switches the figure numbering format according to the office. A single source file can generate multiple versions. When switching offices, there is no need to redraw the figures—only the layout rules are modified, not the graphics themselves.

Compliant Export

The official states that it supports exporting attached drawing pages in PDF or TIFF format at 300 DPI in black and white. It checks the content, color, line type and text size page by page and attaches a compliance report.

Version and Security

Every generation and modification creates a new version, which can be rolled back and resumed from any version; the official promises not to use customer content for model training, with encrypted transmission and storage, and all data is cleared within 30 days after account cancellation.

How to use PatentFig AI

First, use a photo of an existing product to generate a line drawing, verify if it understands the component structure, and then proceed with the formal application.
Number and name the key components in the description before uploading, and the generated labels will be closer to your intent.
After generation, you must check each drawing one by one: whether the lead lines point to the correct components and whether the numbers are consistent with the specification.
This is the most common reason for rejection in formal examination.
The official compliance report can only serve as a self-inspection checklist.
The rules of each patent office are subject to updates, so you should recheck against the latest guidelines on the official website before submission.
The attached drawings involve undisclosed technology.
Confirm the confidentiality clauses and contractual arrangements before uploading the core plan.
the official states that 20 points are given as a gift upon registration, and 10 more points are given daily thereafter.
The package details shall be subject to the official website.