Can AI make USPTO-compliant patent drawings?

AI can produce figures that follow most of the visible conventions: black line art, numerals, lead lines, and FIG. labels. It cannot guarantee that every rule is met. In our own tests the outputs passed the black-and-white and numbering checks, but one draft added a center line and another gave one part two numerals. Review every sheet against 37 CFR 1.84 or have a draftsperson do it before you file.

How do I make a patent drawing with this tool?

Write the figure number and view type, then list the parts, for example "FIG. 1: a perspective view of a water bottle with a lid (12), hinge (14), and body (10)". Click Generate, check the result against the rule checklist on this page, and regenerate the views that need changes.

What views can it draw?

Perspective views, exploded views with a bracket, front, side, and top elevations, cross-sections with 45 degree hatching, system block diagrams, and method flowcharts with numbered steps.

Do the reference numerals match my specification?

Only if you tell it which numeral goes with which part. Put the numerals in your description, then confirm each lead line ends on the correct part. The same part must keep the same numeral in every figure.

How much do patent drawings cost?

Professional draftspersons usually price per sheet, and rates vary with complexity and turnaround. This tool lets you draft figures with credits instead, which helps for early versions and provisional applications. For complex mechanical or design patent sheets, a professional redraw is still worth the cost.

Is the patent drawing generator free?

You can try it for free after signing in, which gives you starter credits. JPEG and 300 DPI print JPEG downloads are free. Paid plans and credit packs add more generations and SVG export.

Engineering & IP

Patent Drawing Generator for USPTO Figures

Turn a written description of your invention into a black-and-white, USPTO-style patent figure with FIG. labels, reference numerals, and lead lines. Use it to draft perspective, exploded, section, and flowchart views, then check each sheet against the drawing rules before you file.

Black-and-white line artFIG. labels and reference numeralsExploded, section, and flowchart viewsRule-by-rule review checklist

AI Patent Drawing Generator

Describe the figure: number, view, and parts

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Free to try ·

Preview

Your patent figure will appear here

Describe the view and parts, then click Generate

Patent Drawing Examples

Real outputs from this generator, including the fixes they still needed

View:

FIG. 1 Perspective View

A single-object perspective view. Each part has its own numeral and a short lead line that touches the part.

utilityperspectiveproduct

FIG. 2 Exploded View

Parts separated in assembly order and grouped by a bracket, as the rule for exploded views asks. No center line is drawn.

utilityexplodedassembly

FIG. 3 Method Flowchart

A method claim drawn as boxes and arrows. Step numerals sit outside the boxes on short lead lines.

methodflowchartsoftware

FIG. 4 Cross-Section (needs fixes)

Good hatching on the cut walls, but two fixes are needed: the outer wall carries two numerals (16 and 18), and the lid hatching runs the same direction as the walls.

utilitysectionhatching

Review Example: Center Line to Remove

An earlier draft that drew a dash-dot center line through the parts. Views must not contain center lines, so this one was regenerated as FIG. 2.

reviewmistakeexploded

USPTO drawing rules: what the AI handles and what you check

Each row maps a rule in 37 CFR 1.84 to what the generator does and what still needs a human review. Rules checked against the eCFR on October 7, 2026. The test sheets on this page were generated with the same drawing instructions the tool adds to your description.

Rule	What it requires	What the generator does	What you check
1.84(a)(1) Black ink	Utility drawings are normally black and white, in solid black ink.	Prompts force black line art on white. Our test sheets measured as near-pure black and white.	Look for gray shading and soft edges after you resize. Convert to pure black and white if your filing tool asks for it.
1.84(f) and (g) Sheet and margins	Letter (8.5 x 11 in) or A4 sheets. Margins at least 2.5 cm top and left, 1.5 cm right, 1.0 cm bottom. No frame around the drawing.	Outputs a portrait image with white space and no border. It does not produce a sized sheet.	Place each figure on a Letter or A4 page with the required margins before you export the PDF.
1.84(h) Views	Views must not be joined by projection lines and must not contain center lines. Exploded parts are grouped by a bracket.	The prompt asks for no center lines or projection lines, and supports a bracket for exploded views.	Center lines can still slip in. Our first exploded draft had one (shown below).
1.84(h)(3) Sections	Cut surfaces use regularly spaced oblique hatching. Different parts in one section are hatched in different directions.	Draws 45 degree hatching on cut material and leaves hollow spaces white.	Check that touching parts are hatched at different angles. In our FIG. 4 test the lid and walls ran the same way.
1.84(l) Line quality	Lines must be uniformly thick, black, and well defined so they copy cleanly.	Clean, even outlines at the default high quality setting.	Zoom to 100% and redraw any broken or faint lines.
1.84(p) Reference numerals	At least 0.32 cm (1/8 in) tall, not circled, and the same part keeps the same numeral in every view.	Adds plain upright numerals outside the object and follows numerals you name in the prompt.	Match every numeral to your specification. AI can give one part two numerals, as in our FIG. 4 test.
1.84(q) Lead lines	Lead lines run from the numeral to the feature, are as short as possible, and must not cross each other.	Draws short straight lead lines that touch the part.	Confirm each line ends on the right feature, not on a neighbor or in empty space.
1.84(u) Figure numbers	Views are numbered "FIG. 1", "FIG. 2" and so on, larger than the reference numerals. A single view has no figure number.	Places the FIG. label you give it, centered below the drawing.	Renumber in order across all sheets, and delete the label if your application has only one view.

AI patent drawing draft of an exploded flashlight with a dash-dot center line through the parts, which 37 CFR 1.84(h) does not allow — Caught in review: a center line. Our first exploded-view draft ran a dash-dot center line through the parts. Views must not contain center lines, so we added that rule to the prompt and regenerated it as FIG. 2.

AI patent drawing FIG. 4 cross-section of a double-wall tumbler where the outer wall is labeled both 16 and 18 and the lid hatching runs the same direction as the walls — Still needs fixes: FIG. 4. The hatching is right on the cut walls, but the outer wall is labeled 18 on the left and 16 on the right, and the lid hatching runs the same direction as the walls. Both are quick edits, but you have to spot them.

Sources: 37 CFR 1.84 Standards for drawings, 37 CFR 1.152 Design drawings, and MPEP 608.02 Drawing. This page is general information, not legal advice.

What is a patent drawing?

A patent drawing is a black-and-white technical figure that shows every feature of an invention named in the claims. US utility applications follow the drawing rules in 37 CFR 1.84: plain black lines, reference numerals that point to each part, numbered figures (FIG. 1, FIG. 2), and no decorative color or text. Examiners use the figures together with the written description, so a numeral in the drawing must match the same part in the specification. Most applications need several views of the same object, such as a perspective view, an exploded view of the assembly, and a cross-section through the parts that matter.

What this generator does well, and where you still need a human

Fast first drafts: describe the object and its parts and get a clean line drawing in under a minute, instead of waiting days for the first sketch.
The look examiners expect: black outlines on white, numerals outside the object on short lead lines, and a FIG. label below the view.
Many view types from text: perspective, exploded with a bracket, side or top elevation, cross-section with hatching, block diagrams, and method flowcharts.
It does not measure or design: proportions are visual, not dimensioned, and fine details can be invented or dropped. Check every feature against your claims.
It cannot guarantee compliance: treat each output as a draft for your patent attorney, agent, or draftsperson, who confirms the final sheets meet the rules.

How to describe your invention for a usable figure

Start with the figure number and the view: "FIG. 2: an exploded perspective view of..." The tool uses that label and view type.
List each part in plain words, in the order a reader would see it. If your specification already assigns numerals, put them in the prompt, for example "lid (40), gasket (42)".
Say what should not appear, such as hidden internal parts or a background surface.
For section views, say which material is cut and which spaces are hollow, so the hatching lands in the right places.
Generate, review the result against the checklist above, then adjust the description and regenerate the views that need changes.

Utility drawings vs design patent drawings

Utility patents protect how something works, so the figures explain structure and function with numerals and lead lines. Design patents protect only how something looks, and follow 37 CFR 1.152 in addition to 1.84: the views must fully show the appearance, surface shading shows shape, broken lines can show parts that are not claimed, and reference numerals are usually not used. This generator is tuned for utility-style figures. You can still draft design views by asking for front, back, left, right, top, bottom, and perspective views with surface shading and no numerals.

From draft to filing

Use the generator early, while the invention is still being described. Inventors use it to explain an idea to their attorney, provisional filers use it to get figures into a first application, and draftspersons use it to block out views before redrawing in CAD. Before filing, place each figure on a Letter or A4 page with the required margins, number the sheets, and run the checklist above. Downloads include a 300 DPI print JPEG. If you want to clean up lines in a vector editor, paid plans and credit packs can also export an SVG trace of the figure.