Osler x Women Funding Women: Clean IP, strong moat: the IP hygiene advantage

The IP Imperative in Cleantech Surge

Cleantech funding has accelerated dramatically, with forecasts showing investments nearing $670 billion in 2025 and continuing momentum into 2026, outpacing fossil fuels for the first time as capital flows into renewables, batteries, and carbon technologies. This boom draws more institutional money and corporate partnerships, but it also heightens scrutiny: investors now routinely probe IP portfolios for clean title, proper assignments from founders and employees, and freedom-to-operate analyses to mitigate risks of future disputes.

For cleantech startups, intellectual property often constitutes the core asset—patents on novel materials, processes, or software algorithms that provide differentiation in crowded fields like solar efficiency or battery recycling. Messy IP hygiene, such as undocumented inventor agreements or inconsistent trade secret protections, can trigger red flags during due diligence, leading to delayed closings, lowered valuations, or outright deal failures. Recent trends show venture capital remaining selective despite overall growth, with emphasis on defensible technology amid supply chain disruptions and geopolitical pressures favoring sovereign capabilities.

Women-led companies face amplified challenges. Data from 2024-2025 indicate female-founded climate tech startups captured as little as 0.4% of U.S. investments and around 1-5% globally, even though mixed-gender or female teams often deliver higher returns and better capital efficiency. Poor IP practices compound these disparities, as biased or risk-averse investors use any documentation gaps to justify passing on opportunities already viewed skeptically.

Non-obvious tensions emerge here: while strong IP creates barriers to entry and supports premium exits, over-patenting can drain limited resources in capital-intensive cleantech, and aggressive enforcement risks alienating potential collaborators in a sector that sometimes benefits from open innovation or patent pools. Trade secrets offer flexibility but demand rigorous internal controls—lapses have sunk companies when key talent departs. The trade-off between speed-to-market and thorough protection grows sharper as technologies commoditize quickly under Chinese competition and policy shifts.

Stakes are tangible: a single infringement claim can cost millions in litigation or force design-arounds that erode margins, while unclean IP has scuttled acquisitions worth hundreds of millions. With cleantech deployment timelines compressing under regulatory pushes and market demand, founders who delay IP housekeeping face mounting opportunity costs as competitors with tighter portfolios capture the next funding wave.