How Climate Tech Founders Use Patent Intelligence to Raise Faster
The week before a Series A pitch, a climate tech founder I know spent 40 hours manually searching patent databases to figure out if their core technical approach had prior art. Forty hours. That's a full work week, away from product, away from customers, while simultaneously prepping for the most important investor meeting of their company's life.
They found three relevant patents. Two were 18 months old and belonged to a university research group. One was filed by a startup in Munich that had gone quiet on their website but was still paying renewal fees — which meant they might still be active.
The founder walked into the investor meeting with a deck that said nothing about competitive patent landscape. The investor asked the question every investor asks: \"Who else is doing this?\" The founder didn't know about the Munich startup. The investor did. The conversation got uncomfortable fast.
This happens constantly in climate tech. Founders are building in genuinely novel technical territory — DAC, grid storage, perovskite solar, next-gen electrolysis — and they don't have a systematic view of who's filed what. The investors, who see hundreds of pitches in a sector, often know more about the patent landscape than the founders pitching them.
The pattern: Founders discover their competitive patent landscape reactively — during due diligence, during an investor question they can't answer, or worse, after a competitor's patent lawsuit. The founders who raise fastest do it proactively.
What Most Founders Are Doing Wrong
When most founders think about patents, they think about defending their own IP — filing quickly, protecting their core claims, building a moat. That's the right instinct, but it's incomplete.
The more valuable question isn't just \"Can we protect this?\" It's \"Do we actually understand the competitive landscape around our core technical approach?\"
These are two different exercises with different outputs:
- Patent filing tells you what you own. It tells you nothing about what others own that might constrain your strategy.
- Patent intelligence tells you the full battlefield — who owns what, where the white space is, where the patent thickets are, and which companies have filed aggressively in adjacent spaces.
Smart investors — especially in hardware-heavy climate tech — are running patent searches on startups before they write a term sheet. They want to know:
- Is this founder's core approach actually defensible, or is it sitting on top of a crowded prior art field?
- Are there blocking patents held by incumbents that could be triggered post-investment?
- Has this startup done enough homework to know what they're actually building?
A founder who walks into a meeting with a clear patent landscape map signals something important: they've already thought about the hard questions. That changes the conversation.
What Smart Founders Do Differently
Founders who raise fastest treat patent intelligence as a pre-pitch preparation tool, not a post-diligence compliance exercise. Here's the difference in practice:
Before investor meetings: They map the patent landscape around their core technical approach. They know who filed what, when, and where. They identify white space — areas where no one has strong claims — and they use that as a positioning lever. They also identify risks: crowded areas, blocking patents, companies with portfolios large enough to be litigious.
During pitch conversations: When an investor asks \"What's your moat?\" or \"Who else is doing this?\", the founder doesn't improvise. They have the answer already. They've mapped it. They can say: \"We know of three companies with relevant patents. Two are in university-to-startup transition and our approach is distinct in X dimension. The third filed in 2023 and appears dormant — we believe there's a freedom-to-operate path via a different electrochemical architecture.\"
That answer — specific, concrete, showing genuine depth of analysis — is worth more than any pitch deck narrative. It signals that the founder has done the technical due diligence that investors wish every founder would do.
\"The best founders we've backed in climate hardware could walk us through their patent landscape in the first meeting — not because they had lawyers do it after the term sheet, but because they genuinely understood their competitive terrain before they raised.\" — A climate VC at a top-10 fund, speaking anonymously
Three Real Examples from the Patent Landscape
Fathom tracks patent activity across climate tech's most active sectors. Here are three examples showing how founders in different spaces can use patent intelligence in their fundraising process:
Electrochemical DAC: Patent Landscape Has Clear White Space
Our analysis identified multiple high-quality patent families covering solid sorbent DAC and membrane-based approaches. But electrochemical DAC — using novel ion exchange membranes to reduce regeneration energy costs — has surprisingly few granted patents relative to the technical activity in academic literature. A founder building in this space has a narrow window to file early, strong claims before the academic literature starts translating into patent filings. Knowing this means the pitch can include: \"Our IP strategy covers the specific membrane architecture that reduces regeneration energy by 40% vs. state of the art — and no competitor has a granted patent in this space.\" That's a moat answer that investors can actually evaluate.
Battery Storage: Patent Thickets Require Freedom-to-Operate Work
Long-duration storage is a crowded patent landscape. Several large incumbents (NGK Insulators, Sumitomo) have accumulated dense portfolios around flow battery architectures and sodium-based chemistries. Founders building iron-air batteries or organic flow batteries need to know: are we building in someone's claim space? Our patent data shows multiple blocking patents in the zinc-bromine flow architecture in particular. A founder who discovers this early — before the Series A — can either pivot their approach, design around the claims, or prepare an acquisition-by-statement strategy for investors who want to understand execution risk. Discovering it during due diligence is a bad outcome. Discovering it in pitch prep is a competitive advantage.
Perovskite: Rapidly Accelerating Filing Activity — Timing Matters
Patent filing velocity in perovskite solar has increased ~3x in the past 24 months as commercial viability projections improve. We identified six new patent families filed in the last 12 months covering tandem perovskite-silicon architectures with stabilized efficiency above 30%. A founder building in single-junction perovskite might think their space is less contested — but the tandem patent families are claiming layer architectures and interface stabilization techniques that could extend into adjacent single-junction approaches. The founder who knows this can address it directly: \"Our single-junction approach uses a different buffer layer chemistry (tin-based rather than lead-based) that sits outside the active patent families and offers equivalent stability.\" That's a technically credible answer to an investor concern that would otherwise go unaddressed.
The Fundraising Advantage: Five Things Patent Intelligence Gives You
The fifth point is underrated. Investors calibrate how seriously a founder has thought through their business by the quality of the questions they can answer. A founder who can walk an investor through their patent landscape — white space, competitive claims, freedom-to-operate strategy — is demonstrating the kind of technical depth that makes them a reliable operator, not just a compelling storyteller.
Climate tech is not a storytelling business. It's a hardware business. The founders who raise fastest know that their credibility in the technical dimensions is the foundation of everything else.
How to Build Your Patent Intelligence Before Your Next Raise
You don't need a law firm to get started. The process is:
- Map your core technical approach — What's the specific architecture, chemistry, or process your product is built on? Get precise. \"Grid-scale energy storage\" is not precise. \"Iron-air electrochemical cells with carbonate electrolyte at ambient temperature\" is precise.
- Search patent databases — Use Google Patents or Lens.org to search by keyword, inventor, and assignee for your technical domain. Look at the last 5 years of filings. Build a list of who's filing what.
- Identify claim scope, not just keywords — A patent title is not the claim. Read the claims section — that's what actually restricts or enables your freedom to operate. A patent titled broadly but with narrow claims might be less problematic than it looks.
- Map the competitive timeline — When did each relevant company file? Are they in the \"dormant but paying fees\" category or the \"actively building a portfolio\" category? This matters for urgency.
- Build a one-page landscape summary — Not for the deck, but for yourself. This is what you reference during investor conversations. The act of building it forces you to think through the hard questions before an investor asks them.
Fathom is building patent intelligence tools specifically for climate tech founders — mapping competitive landscape, tracking filing activity across sectors, and surfacing the white space where the strongest IP positions can be established early. If you want early access to founder-focused intelligence briefs as we build this out, join the waitlist below.
Get Patent Intelligence Before Your Next Raise
Fathom is building patent landscape analysis for climate tech founders — competitive mapping, white space identification, and filing activity tracking across DAC, energy storage, solar, and more. Join the waitlist for early access to founder-focused intelligence.
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The Broader Point
Patent intelligence isn't a legal exercise. It's a fundraising tool. It's a competitive strategy tool. It's a product architecture tool.
Founders who treat it as a checkbox — \"we filed our patents, we're good\" — are missing the bigger picture. The patent landscape around your core technical approach tells you a lot about the competitive dynamics you're walking into. Investors know this. The best ones have already looked.
The question is whether you want to walk into your next investor meeting with a map — or without one.
Next Steps
- Explore the Energy Storage sector — live patent activity, sector viability scores, and AI-generated investment memos
- Read the patent landscape analysis — five patent families that underpin the next wave of climate investment
- Browse Fathom's scored research — 87+ papers across 10 climate sectors, with patent and market intelligence
— Fathom is an AI-powered climate venture scientist that scans and synthesizes 50,000+ research papers per week to surface high-signal investment opportunities — now including patent landscape intelligence for founders. This analysis reflects data from papers and patent filings analyzed through Q1 2026.