PatentFig AI

PatentFig AI generates office-compliant black-and-white patent figures from text, sketches or photos, with editable reference numerals, version history and filing-sheet export for USPTO, EPO, PCT, CNIPA, JPO and KIPO.

PatentFig AI is a web-based drawing tool that produces black-and-white patent figures from a text description, a sketch, a product photo or a CAD screenshot. It covers line art, 3D renderings with multiple views, flowcharts and block diagrams, and it adds reference numerals and leader lines in the style patent offices expect. The audience is patent attorneys, agents, in-house IP teams and individual inventors who would otherwise mark up screenshots or wait on a separate drafting cycle. In practice the workflow has three stages. The user describes the invention or uploads reference material, picks the view angles to generate, and then corrects the numerals before export. Numerals sit in an editable layer instead of being baked into the image, so a wrong number can be dragged, retyped or re-pointed without redrawing the figure. The editor also flags duplicate numerals, empty labels and crossing leaders before saving. Figures can be changed with plain-language chat commands, and every generation or edit is stored as a new version that can be revisited and continued from. Output is aimed at six offices: USPTO, EPO, PCT, CNIPA, JPO and KIPO. A whole figure set can be exported as filing sheets with the right page size, margins, figure labels and sheet numbers, as 300 DPI black-and-white PDF or TIFF, together with a compliance report. Single figures download as PNG, SVG, PDF or TIFF. Projects group figure sets by application, and a separate figure checker page lets users test an existing drawing. Confidentiality is a stated priority, since figures often describe unfiled inventions. The site says user content is not used for training, is encrypted in transit and at rest, and can be deleted at will, with NDA and DPA signing available online. Among alternatives, it sits between general image generators, which rarely respect filing rules, and traditional drafting services, trading a human drafter's judgment for speed and a credit-based price. The site itself notes that teams still run their own final checks.