How to draft a provisional patent application with AI, and what it must contain

What a provisional application is, and what it is not

A provisional application is a lower-cost first filing that establishes a filing date for your invention. It is never examined and never becomes a patent by itself. It lasts 12 months from the day you file, a period that cannot be extended. To keep the benefit of that date, you file a nonprovisional application within those 12 months; otherwise the provisional is abandoned.

It does not need formal claims or an oath or declaration. That makes it tempting to file something thin. The catch is that the provisional only protects what it actually describes. A later nonprovisional can rely on the provisional's date only for what the provisional disclosed.

What the USPTO requires

The USPTO gives a provisional a filing date only when it contains a written description of the invention that meets 35 U.S.C. 112(a): enough to show what the invention is and how to make and use it. Drawings are not required for the filing date, but the USPTO advises filing any drawings necessary to understand the invention.

Write it as if it were the full application

The safest working rule is to draft the provisional as though it were the specification of the full application, without the formal claims. Describe the problem, the invention, every part and how the parts work together, how to make it, and the alternatives: other materials, other shapes, other ways to achieve the same function.

Alternatives are where inventors most often leave value on the table. You know the version you built. A competitor will build a version you did not describe. Ask Draimo to list the variations of each component, and keep the ones that are real.

• Field: the area of technology, in one sentence.
• Background: the problem and what exists today, stated factually.
• Summary: what the invention is and what it achieves.
• Brief description of the drawings: one line per figure.
• Detailed description: every component, by reference numeral, how it works, and how to make it.
• Alternative embodiments: other materials, dimensions, arrangements and uses.

Let AI interview you

The most effective way to use AI here is not to ask it to write the application. It is to ask it to interview you. Tell Draimo what the invention is, and ask it to question you one point at a time until it could describe the invention to an engineer who has never seen it: what each part is made of, why that material, what happens at each step, what fails if a part is missing.

Then ask for the specification from the interview. Each answer you gave becomes a paragraph that a practitioner can work from, and each gap becomes a visible question rather than a hole discovered later.

Drawings from your own sketches

Sketch each figure on a Draimo Ink page with a stylus, a finger or a mouse, and label the parts with reference numerals. Ink can tidy a rough stroke into a straight line, a box or a circle, and exports the page as SVG, a vector file that scales cleanly. Formal patent drawings have their own rules, so treat these as working figures for your practitioner, or as the basis for the final drawings.

Ask Ink to read the page and it will check that every numeral you drew is described and that the labels are consistent, before the figures go into the application.

Confidentiality and timing

Your notes, drafts and sketches stay in your Draimo account unless you share them. Do not post the invention publicly, pitch it openly or put it in a shared space before you file; in many countries outside the US, a public disclosure before filing can end your right to a patent there.

Remember the clock. The 12 months start on the day you file the provisional, and they cannot be extended. Put the deadline in your calendar the day you file.

Why a practitioner still reviews it

A registered patent attorney or agent decides whether the description supports the claims you will want, whether to file in other countries, and how the invention relates to prior art. Draimo is not a patent practitioner and does not give legal advice. A complete, well-organised draft makes that review faster and the result stronger.

See how far Draimo can take it: a complete non-provisional utility patent application for an insulated grocery tote with a phase-change cold panel, in the USPTO's order with figures described, reference numerals and 20 claims, made on Draimo with the prompt shown. A provisional needs the same complete description; the formal claims can follow in the nonprovisional.

Sources we checked

• USPTO: Provisional application for patent
• USPTO fee schedule

Checked October 21, 2026. Dates and amounts change every year. Ask Draimo for this year's figures, grounded in official sources.