PatentDrawing is a web-based AI drawing generator that converts invention descriptions, product photos, hand sketches, and CAD screenshots into patent-style line art, 3D-style perspective and multi-view images, exploded views, and flowchart or block-diagram drafts, delivered as high-resolution PNG downloads.
What is PatentDrawing?
PatentDrawing (patentdrawing.app) is a browser-based generator for patent-style technical illustrations. It takes a written invention description or an uploaded reference image — a product photo, a hand-drawn sketch, or a CAD screenshot — and returns a black-and-white patent line-art draft, a 3D-style perspective or multi-view set, or a flowchart/block-diagram draft, which you download as a high-resolution PNG. Output is raster only: the site states each result is a flat PNG image, not a rotatable 3D model, an editable CAD file, or a layered vector. Trial credits are granted at sign-up with no credit card required.
Key Features
- Patent line art generation — turns a description, product photo, sketch, or CAD screenshot into monochrome line art; you name the view and the details to preserve, then inspect the PNG against the real invention.
- 3D rendering and multi-view sets — request perspective, orthographic, front, rear, side, top, or exploded views while keeping a consistent visual direction across the requested views.
- Flowchart and block-diagram drafts — describe components, process stages, and connections, plus labels and flow direction; the site shows a water-filtration diagram with reservoir, filter, flow sensor, pump, outlet, and controller.
- Six entry points — text prompt, Photo to Patent Drawing, Sketch to Patent Drawing, CAD screenshot reference, plus dedicated 3D Perspective and Exploded View generator pages.
- Credit-based generation — Standard includes 36,000 credits per year (up to 1,200 generations), Pro 90,000 credits (3,000), Ultra 180,000 credits (6,000); every new generation consumes the applicable credits.
- Concurrency and history — run up to 3, 5, or 10 generation tasks concurrently, with 30-day, 90-day, or permanent generation history depending on tier.
- PNG export and licensing — high-resolution PNG downloads, no watermark on paid plans, and a commercial-use license included.
- Stated scope limit — the site says it does not certify patent-office compliance; geometry, reference numbering, and filing layout still require separate review.
Who should use PatentDrawing?
- Independent inventors — convert a prototype photo or rough pencil sketch into clean black-and-white line art they can bring to an attorney conversation.
- Patent agents and drafting support teams — produce first-pass figure drafts (line art, exploded assemblies, block diagrams) before a professional drawing review.
- Mechanical and product engineers — turn an existing CAD screenshot into a patent-style drawing that keeps the visible features that matter.
- Hardware startup founders — generate perspective and view-set images to explain a product concept in internal and investor documents.
What can you do with PatentDrawing?
- Prototype owners: upload a photo of a physical product and get a monochrome line drawing of the same object to share for feedback.
- Hardware teams: skip a blank canvas and generate an exploded view that separates lever, pivot pin, press cone, basket, and base so assembly relationships are easy to explain.
- System designers: turn described process stages and connections into a block diagram with short labels and directional arrows.
- Inventors with rough concepts: use a pencil sketch of, for example, an adjustable two-arm desk lamp as the reference and develop it into a clearer technical illustration.
How does PatentDrawing work?
- Describe the invention in a short prompt or upload a product photo, hand sketch, or CAD screenshot.
- Choose a drawing direction: patent-style line art, a 3D-style perspective or view set, or a flowchart/block diagram.
- Review geometry, labels, arrows, and component relationships against your source, then download the PNG.
Pricing
Subscription plans (Standard, Pro, Ultra) are billed monthly or yearly, with yearly billing discounted by roughly 30 to 50 percent, plus one-time credit packs. Annual pricing shown is $20/month for Standard ($240/year), $29/month for Pro ($348/year), and $44.50/month for Ultra ($534/year). Annual plans include high-resolution PNG downloads, a commercial-use license, and no watermark; trial credits at sign-up need no credit card.
FAQ
What file format does PatentDrawing export?
Drawings are downloaded as high-resolution PNG images suitable for sharing, review, and further preparation. The PNG is a flat raster image and does not contain editable vector layers, and the 3D tools do not produce a rotatable 3D model or an editable CAD file.
What kinds of drawings can it generate?
Three families: patent line art (including perspective, cutaway, and exploded views), 3D-style perspective and multi-view sets such as front, rear, side, and top, and flowchart or block-diagram drafts that map components, process stages, and system connections.
Can I start from a photo, sketch, or CAD screenshot?
Yes. The site offers dedicated tools for photo-to-patent-drawing, sketch-to-patent-drawing, and CAD-screenshot references, alongside plain text prompts. Use only references you own or have permission to upload.
Are the generated drawings ready to file?
No. PatentDrawing states it does not certify patent-office compliance and recommends checking the target patent office's rules before filing; labels, reference numerals, and geometry should be verified manually, and AI output cannot guarantee that numbering is correct.
Can I refine a generated drawing?
You can adjust your prompt or reference and generate another version; each new generation uses the applicable credits. You can also request figure numbers and reference numerals in the prompt and then double-check them in the image.
