Why the map is the most useful document in the portfolio

A patent list tells you what you filed. A patent-to-product map tells you what you protect. It is the document investors ask for in due diligence, the document that settles which maintenance fees to pay, and the fastest way to see that a feature shipping next quarter has no filing behind it. Most companies with more than 10 families do not have one, because the information sits half in the attorney's docket and half in the engineering roadmap.

Build the table

• Asset: family name, application or patent number, status
• Claim in one line: what the broadest independent claim actually requires, in plain engineering language. Patent counsel writes this; nobody else should guess it
• Product today: the shipped product or component that practises the claim, or "none"
• Roadmap: the planned product or release that will practise it, with the date
• Jurisdictions: where it is filed or granted, against where the product sells and is made
• Next deadline: office action, national phase, or maintenance fee

Read the map in three passes

First pass, rows with "none" in both product columns: candidates to lapse, license, or sell. Second pass, roadmap items in the next 24 months with no row: candidates to file now, because a US application filed today will wait around 20 months for a first office action and the product must not launch before the priority date is fixed. Third pass, mismatched jurisdictions: a product manufactured in Germany and sold in the US with a patent only in the UK.

Keep it alive

The map decays with every release. Tie updates to events the company already has: the roadmap review, the funding round, the release planning cycle. Each new invention disclosure gets a provisional row before it is filed. Each lapsed or granted asset changes status. An annual rebuild is the minimum; quarterly is what companies filing dozens of patents a year need.

What most teams get wrong

• Mapping titles, not claims: a patent titled "Battery management system" may claim one narrow control loop. Only the claim tells you the coverage
• Mapping to the whole product: a row that says "the platform" hides the fact that the claim covers one module a competitor can drop
• Letting the law firm own it: the roadmap half of the table lives with engineering
• Building it once for a raise: the version investors see should be the version the company runs on

How Lightbringer keeps the map current

Lightbringer is the AI-native patent service for tech companies: patents drafted with purpose-built AI, reviewed and filed by Lightbringer's own patent attorneys, for one flat fee per application.

Disclosures, applications, grants, and deadlines live in one platform, so the asset half of the map is already structured and current, and Lightbringer Assistant, the chat built into the platform, lets you ask questions across the whole portfolio in plain language. Lightbringer's attorneys write the one-line claim summaries as part of drafting. Pricing is the Starter plan at $7,200 per patent application per year, official fees separate.