business
Stilta Stilta Raises $10.5 Million in Seed Funding Led by Andreessen Horowitz
The seven-month-old startup, founded in January 2026 by four former McKinsey colleagues, develops AI software for patent litigation analysis. The round included participation from Y Combinator and employees at OpenAI, Lovable, and Legora.
Jul 8, 5:00 AM·1m read1 source
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Stilta Stilta raised $10.5 million in seed funding, Insider reported. The round was led by Andreessen Horowitz, with participation from Y Combinator and employees from OpenAI, Lovable, and Legora. The company was founded in January 2026 by Tobias Estreen, Petrus Werner, Oskar Block, and Oscar Adamsson, all former McKinsey colleagues.
Estreen serves as lead data scientist at QuantumBlack, McKinsey's AI arm, while Werner works there as a data engineer. The startup builds software that uses AI agents to analyze patents for litigation, infringement searches, and portfolio reviews. Oskar Block said a lot of companies today sit on this huge patent portfolio and typically just place them in a drawer.
Sixty percent of Stilta Stilta's revenue now comes from law firms and 40 percent from corporate legal departments, with enterprise customers including Roche and Maersk. Stilta Stilta competes with Patlytics and DeepIP in the patent software market. It turned down all other term sheets received during the fundraise and shared its pitch deck exclusively with Business Insider.
In June 2026, another patent-related startup, Fearn, raised a seed round that included investment from a16z Speedrun.
