What to record, and why it matters later

What the record has to support

Inventorship. A factual question about who devised the claimed subject matter - and one that follows the claims, which change during prosecution. Names against contributions, with dates, is what makes that determinable three years later.

Disclosure. Parameters, ranges, alternatives and failure conditions recorded contemporaneously are what end up in the specification. What was never written down usually never gets drafted.

Evidence. Comparative results, even rough ones, that later answer inventive step and section 3 objections. Data that existed before the objection is far more credible than data generated after it.

What it will not do

It will not beat someone else's earlier filing. India operates on first-to-file: two people can genuinely invent the same thing independently, and the one who filed first prevails. Proving you invented it earlier does not give you a right.

So the notebook is a supporting document, not a substitute for filing. If you find yourself relying on it to establish priority, something has gone wrong upstream.

What to actually do

• Record names and dates against contributions as you go.
• Record failure conditions, not just successes.
• Keep raw comparative data - it answers objections years later.
• A notebook proves inventorship; only a filing establishes priority.