Why deep tech needs a playbook, not a filing

Deep tech companies invent continuously and commercialise slowly. A single patent filed at incorporation protects one version of one idea; by the time it grants, the product has moved on and the competition has read the publication. A playbook treats patenting as a recurring process that runs alongside R&D, so each technical milestone produces a decision: file, defer, or publish defensively.

Stage 1: capture inventions before they leak

Most patentable work in a deep tech company never reaches a patent attorney because nobody wrote it down. Set a standing rule: every engineering milestone that solves a problem in a new way gets a short invention disclosure, written by the engineer, reviewed monthly. Capture the problem, the mechanism, the measured result, and the alternatives that were tried. That document is the raw material for a patent application and, later, the evidence of who invented what.

Stage 2: file before you disclose

A first filing in one office fixes your priority date worldwide for 12 months under the Paris Convention. The US gives inventors a one-year grace period for their own disclosures; the EPO and most other offices do not, so a conference talk or an arXiv paper before filing can destroy novelty in Europe. Official fees are the small part of the cost: the USPTO charges $2,000 for a large entity, $800 for a small entity, and $400 for a micro entity for filing, search, and examination combined. Drafting is the larger line, and it is where quality is decided.

Stage 3: extend to the markets that matter

Within the 12 months, decide where to file. The question is commercial: where are your customers, your competitors, and your manufacturing in the next five years? Two to four jurisdictions is typical. A PCT application keeps roughly 150 countries open and defers national decisions by up to 30 or 31 months from priority, which lets a seed-stage company make the jurisdiction call with Series A information.

Stage 4: prosecute with a timeline in mind

At the USPTO, the first office action currently arrives around 20 months after filing and total pendency averages about 26 months; the EPO is similar or slower. Every response is a chance to narrow claims, so decide up front which claims you would fight for and which you would trade. If a grant is needed for a fundraise or a partnership, Track One prioritised examination at the USPTO targets a final decision inside 12 months for an additional fee.

Stage 5: review the portfolio every round

At each funding round, map every application and grant to a current or planned product. Anything that protects a legacy prototype is a candidate to drop or let lapse; anything on the roadmap without coverage is a candidate to file. Investors run the same exercise in due diligence, and the EPO and EUIPO found startups with both patents and trade marks at seed or early stage are up to 10.2 times more likely to secure funding.

What most deep tech founders get wrong

• Filing once and stopping: the first patent is the start of a portfolio, not a box ticked for the pitch deck
• Letting the attorney own the strategy: which markets and which inventions to protect are business decisions that only the founding team can make
• Treating drafting as a commodity: a cheap application that claims only the working prototype protects nothing once the design changes
• Ignoring ownership paperwork: unassigned inventions from co-founders, contractors, or university labs surface in every diligence and stall deals

How Lightbringer runs this playbook

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.

Engineers submit invention disclosures in the platform, Lightbringer's attorneys and AI turn them into applications, and the same team files at the EPO, UKIPO, and USPTO directly, via PCT internationally, and through a network of local attorneys elsewhere. Pricing is one published number, the Starter plan at $7,200 per patent application per year with official fees separate, so a filing programme can be budgeted like any other engineering cost. More than 200 deep tech companies across the US and EU use it.

DISCLAIMER:  THIS IS NOT LEGAL ADVICE.  YOU SHOULD CONTACT A PATENT ATTORNEY IF YOU NEED A FORMAL ASSESSMENT OF PATENT INFRINGEMENT OR FREEDOM TO OPERATE.