Provisional patent application: buying twelve months, not a patent

A provisional patent application secures a filing date for an invention and gives you twelve months to decide whether to pursue a full application. It is not a patent, it is never examined, and it never becomes one on its own — if the twelve months pass without a non-provisional filing, it lapses and the date is gone. Used deliberately it is the cheapest way to buy thinking time. Used as a substitute for a patent, which is how it is most often sold, it produces a company that believes it has protection it does not have.

What a provisional patent application actually gives you

• A priority date for whatever the application discloses — and only for what it discloses. Anything you add later gets the later date.
• The right to describe the invention as patent pending during the twelve months.
• Twelve months to test the market, raise money, or find out that the idea does not work, before committing to the cost of a full application.
• No examination, no enforceable rights, and no protection against someone else simply using the idea in the meantime.
• The concept exists in some jurisdictions and not others, and the international route runs through a separate treaty application with its own deadlines. Where you intend to file matters as much as what you file.

Why the disclosure is the whole document

1. Describe the invention completely enough that someone skilled in the field could make it — an incomplete disclosure means the priority date does not cover the missing part.
2. Include the variants you might commercialise, not only the one you built first. Adding them later loses the early date for them.
3. Include drawings, even rough ones. They are cheap and they carry disclosure that prose misses.
4. Do not rely on a short summary. A two-page provisional protecting a complex mechanism is the classic false economy, and it is usually discovered during examination of the full application two years later.
5. Diarise the twelve-month date the day you file, and set a decision point three months before it, because the full application takes longer to prepare than people expect.

Public disclosure interacts with all of this. In many jurisdictions showing the invention publicly before filing destroys novelty outright; in some there is a grace period. If you are exhibiting, pitching or publishing, file first or use a non disclosure agreement template — and do not assume a conference counts as confidential because the audience was small.

The records that decide its value

• A dated invention record: what was conceived, by whom, and when — maintained as you go rather than reconstructed for the filing.
• Lab notes, test results and failed variants, dated, which evidence both the development and the inventive step.
• Who contributed what, because inventorship is a legal question and getting it wrong can invalidate a patent.
• Every public disclosure with its date, so the novelty question can be answered rather than guessed.
• The twelve-month deadline and the decision owner, held somewhere that survives the person who filed leaving.

Where the records live

Ettex Records keeps the invention record as dated entries against a project, with contributors, test results and disclosures attached — which is the material a patent attorney asks for and the material that is impossible to create retrospectively with any credibility. Keep the twelve-month deadline as a field you can sort by rather than a calendar entry in one person’s account. Ettex does not file applications, does not search prior art and gives no legal advice; provisional filings look simple and are routinely botched in ways that only surface years later, so this is one of the clearer cases for using an attorney.