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Stockholm startup Stilta raises $10.5M to apply AI to patent litigation

Published
Score
18

Why it matters

Stilta, a Stockholm-based AI startup, closed a $10.5 million seed round on May 19, 2026, led by Andreessen Horowitz with participation from Y Combinator and angel investors from Sana, Legora, OpenAI, Lovable, and Listen Labs. The company, founded in 2026 and led by CEO Block alongside cofounders Estreen, Petrus Werner, and Oscar Adamsson, has built software designed to automate research and analysis in patent litigation—including enforcement, defense, and commercialization work. The platform generates litigation-grade reports and claim charts by searching patents, scientific publications, and archived web data while keeping lawyers in control of the process.

The company plans to deploy the capital toward hiring engineers, go-to-market staff, and patent experts across Stockholm and New York offices. Stilta's specific product roadmap and initial customer base remain undisclosed.

Patent litigation remains a bottleneck for IP practices: cases move slowly and expensively because they demand extensive prior art research, claim analysis, and evidence gathering. Stilta's entry into this space, backed by major venture capital, signals investor confidence that agentic AI can meaningfully compress these workflows. Practitioners should monitor whether the company's tools can actually produce work product that withstands adversarial scrutiny and whether law firms adopt them as core research infrastructure or treat them as supplemental.

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