Direct comparison
Invention Disclosure vs. Patent Application
Invention disclosure vs. patent application: internal TTO report vs. formal legal filing. Compare timing, legal effect, cost, and Bayh-Dole deadlines.
Side-by-side comparison
| Dimension | Invention Disclosure | Patent Application |
|---|---|---|
| What it is | An internal report describing a potential invention | A formal legal filing seeking patent rights |
| Who prepares it | The inventor(s), using lab notebooks/research records | A patent attorney or agent, typically retained by the TTO |
| Filed with | The institution's own technology transfer office (internal only) | A patent office — USPTO, a foreign office, or via the PCT |
| Is it a legal filing? | No — no fee, no examiner, no statutory deadline of its own | Yes — provisional (35 U.S.C. § 111(b)) or non-provisional, subject to USPTO fees and examination |
| Creates a public record? | No — confidential internal document | Usually, eventually — non-provisional applications publish ~18 months after earliest filing (35 U.S.C. § 122(b)); provisionals are never separately published |
| What process it starts | The TTO's internal evaluation: patentability screening, prior art search, commercial-potential review | USPTO (or foreign office) examination: prosecution, office actions, allowance or rejection |
| Typical timing | As soon as practical after conception, and before any public talk, poster, paper, or sale | Often a provisional filed shortly after disclosure to lock in a priority date; non-provisional due within 12 months of that provisional |
| Bayh-Dole trigger (federally funded work) | Institution must report the invention to the funding federal agency within 2 months of the inventor's written disclosure to patent personnel (37 CFR § 401.14(c)(1)) | Institution must elect to retain title within 2 years of that agency disclosure, then typically has a limited window to file a U.S. application or title can revert to the government |
| Cost | No filing fee | USPTO filing fees plus attorney/agent fees (see CASRAI's Cost of Filing a Patent guide) |
| Does it establish ownership? | No — ownership is generally already set by institutional IP policy/employment terms at conception; the disclosure just reports the invention | No — it seeks a new, separate right (the patent) but doesn't itself resolve underlying ownership |
Common questions
FAQ
Does submitting an invention disclosure start the patent clock?+
Not by itself. The disclosure has no legal filing date at a patent office. What matters for novelty purposes under 35 U.S.C. § 102 is the invention's first public disclosure, sale, or offer for sale — a confidential internal disclosure to your own TTO does not trigger that. Filing an actual patent application is what establishes a priority date.
Do I need a patent application filed before I publish or present my results?+
If your institution wants to preserve full patent rights, yes — ideally at least a provisional application should be filed before any talk, poster, paper, or thesis becomes public. The U.S. America Invents Act gives a 12-month grace period after an inventor's own public disclosure, but most other countries require absolute novelty with no grace period, so delaying a filing past a public disclosure can forfeit foreign patent rights even if U.S. rights survive.
Can a researcher file a patent application without going through the invention disclosure process?+
At most institutions, no. University IP policy — often tied to conditions the institution accepted under the Bayh-Dole Act for federally funded work — typically requires disclosing inventions to the TTO first. The TTO then decides whether the institution will pursue a patent application, license the technology, or release rights back to the inventor.
How long after an invention disclosure does a patent application typically get filed, if at all?+
It varies by institution and invention, but many TTOs aim to make a provisional-filing decision within weeks to a few months of receiving a disclosure, especially if a public disclosure or funding deadline is approaching. Not every disclosure results in a filing — the TTO may decline if patentability or commercial-potential screening doesn't support the cost of filing.
Going deeper
