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When should my startup file its first patent?

Cash, timing and disclosure, in the order they actually bite.

File before the data room opens.

Diligence rarely finds bad patents. It finds missing assignments and overstated claims.

  • Get written assignments from every inventor, including pre-incorporation founders and consultants, and record them.
  • Say patent applied for until grant - everywhere, including the deck and the website.
  • Keep the enabling architecture detail out of the circulated deck.
  • A filed application with clean title is worth far more in diligence than a larger number of messy ones.

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This is educational guidance, not personalised legal advice. It cannot see your documents, your dates or the prior art, and those are usually what decide the answer. Use it to understand the question, then take advice on your own facts.

Not sure whether this applies to your invention?

The honest answer usually needs someone to look at your actual disclosure, your timeline and the prior art. That is a conversation, not an article.