Conceived
The moment when an invention is first reduced to a definite and permanent idea in the inventor's mind.
While straightforward in theory, many businesses fail to actively track obligations tied to this concept - often resulting in missed deadlines, unintended renewals, penalties, or loss of contractual rights.
US Law · For business owners and foundersWhat is a Conceived?
In patent law, conception is the moment when an inventor first forms a definite and permanent idea of the complete invention in their mind. It is the earliest point of inventorship and is critical in disputes where two or more people claim to have invented the same thing.
Conception does not require a working model, prototype, or written specification. The standard is purely mental: Did the inventor have a clear, definite understanding of the invention and how it would work? Vague ideas, general concepts, or incomplete thoughts do not constitute conception.
If two inventors claim the same invention, the one who conceived first typically is recognized as the original inventor and has superior rights. Conception date is proved through testimony, lab notebooks, drawings, emails, or other corroborating evidence of when the idea was formed.
In practice, many teams rely on a contract expiry tracking system to stay on top of dates and obligations tied to clauses like this.
Key Elements
Definiteness and Clarity Standard
Conception requires that the invention be clear and definite in all essential respects. A vague idea that "we could improve efficiency" is not conception. The inventor must be able to explain specifically how the invention works and what problems it solves.Corroborating Evidence
Conception cannot be proved solely by the inventor's testimony. Courts require corroborating evidence: contemporaneous lab notebooks, sketches, emails, emails to colleagues, or credible witness testimony from someone who heard the inventor describe the idea at the time.Reduction to Practice
Conception is distinct from reduction to practice - the actual building or testing of a working model. An inventor can be the first to conceive but be beaten to reduction to practice by someone else. Under the first-to-invent rule (now mostly replaced by first-to-file), the first conceiver could still claim priority if they reduced to practice before filing.Burden of Proof
The party claiming an earlier conception date bears the burden of proving it by clear and convincing evidence. This is a high burden, especially when challenging the other party's patent. Without contemporaneous documentation, proving early conception is difficult.Ownership and Inventorship
The date of conception establishes who is the legal inventor. Ownership may be separate - an employer may own the invention even though the employee was the inventor. The conception date is used to determine inventorship on patents, which has tax and royalty implications.Real-World Example
Engineer A describes in a detailed lab notebook on January 5 a specific method for optimizing database queries using a novel indexing approach. Engineer B files a patent on the same approach on March 1. Engineer A later files a patent application on June 1 and claims an earlier conception date, citing the lab notebook.
Engineer A can claim priority based on the earlier conception date (January 5), provided the notebook entry is sufficiently detailed and contemporaneous. Engineer A must show that the conception was definite (the specific indexing method was clearly described) and that the notebook is authentic (dated, signed, or corroborated by colleagues who saw it). Under modern first-to-file rules, Engineer B's earlier filing may control ownership unless Engineer A can show fraud or that Engineer B derived the invention from Engineer A.
This is why many businesses adopt automated deadline tracking to ensure no critical dates are missed before they pass.
Sample Clause Language
Conception and Inventorship ClauseWatch Out For
Relying only on testimony to prove early conception
A witness or inventor's oral testimony alone is not sufficient to establish an earlier conception date. Courts require contemporaneous written evidence: lab notebooks, email messages, sketches, or other documents created at or near the time of conception.Confusing conception with patent filing date
Under modern first-to-file rules, the date you file a patent application controls priority - not the conception date. However, conception still matters in disputes over inventorship, ownership, and in rare cases where you claim priority from an earlier application.Assuming a vague description amounts to conception
If a notebook says "idea for faster query processing" without explaining the specific mechanism, that may not meet the definiteness standard for conception. The entry must be specific enough that someone skilled in the art could understand and implement the invention.Don't let conceived deadlines catch you off guard
Key dates tied to conceiveds - renewal windows, expiry cutoffs, notice periods - can easily slip through the cracks when tracked manually. Missing them triggers automatic extensions, penalties, or lost rights. ExpiryEdge tracks every critical deadline and sends automated reminders before they're due - so nothing slips.
Instead of relying on spreadsheets or manual follow-ups, a centralized renewal reminder system ensures every deadline is visible, tracked, and actioned automatically.
How to Use This in Your Favor
Maintain contemporaneous lab notebooks and documentation
For any significant R&D project, keep detailed, dated lab notebooks and email records. If conception is later disputed, these contemporaneous documents are your strongest evidence. Have colleagues review and date-stamp important entries.Document the conception process in writing
When an engineering team has a breakthrough, document it immediately: send emails describing the concept, create sketches, record meeting notes. This creates a paper trail showing when the invention was conceived and by whom.Related Terms
Frequently Asked Questions
Do I need a working prototype to prove conception?
No. Conception is a mental state - having a clear, definite idea of how the invention works. You do not need a prototype. However, you will need evidence (documentation, witnesses) proving that you had this clear idea at a specific time.
What if two people conceived the same idea at the same time?
In first-to-file systems (current US patent law), whoever files first gets the patent. If both file around the same time, the earlier filing date controls. Conception date becomes secondary. In rare disputes, both may claim inventorship on the same patent.