Stilta Raises $10.5M to Scale AI Patent Litigation Platform
Stilta secured a $10.5 million seed round led by Andreessen Horowitz to expand its AI patent platform.
Why it matters: The investment signals strong VC confidence in automated legal tech for patents, highlighting accelerating innovation in a traditionally slow, manual industry. Large enterprise adoption could shift how patent litigation is managed globally.
- Stilta, founded in December 2025 by ex-McKinsey engineers, automates IP case research and analysis.
- The $10.5M round was led by Andreessen Horowitz, with Y Combinator and top legal tech operators participating.
- Stilta’s AI platform searches patent conflicts, flags similarities, and pulls filing and court histories.
- Enterprise clients already include Roche, Alfa Laval, Maersk, and three of the five largest IP firms.
Stilta, a Stockholm-based legal tech startup, announced a $10.5 million seed funding round on May 19, 2026. The round is led by Andreessen Horowitz (a16z), with support from Y Combinator and operators from OpenAI, Legora, and Lovable.
Founded by former McKinsey engineers Oskar Block, Tobias Estreen, Petrus Werner, and Oscar Adamsson in December 2025, Stilta’s platform leverages AI agents to automate the research and analytical work required in complex patent cases. According to CEO Oskar Block, “They reason in parallel and converge the way a room full of specialists would, but at a scale no human team can match.”
Rolled out to customers by February 2026, the platform allows inputs of patent numbers and content, then uses AI to identify conflicts, flag similar intellectual properties, and extract both filing and court histories. Enterprise adoption is already underway: Roche, Alfa Laval, Maersk, and three of the world’s five largest IP firms are customers or active pilot users.
David Haber, general partner at Andreessen Horowitz, noted the impact: “Patent litigation runs on labor-intensive workflows that haven’t meaningfully changed in decades. Stilta automates them and, in doing so, becomes the system of record for how enterprises protect and monetize their most valuable intangible assets.”
The move comes amid growing investment and competition in the AI-for-patent-law space, with startups like Solve Intelligence and DeepIP also targeting increased speed and efficiency for legal teams.
By the numbers:
- $10.5M — Seed funding round raised in May 2026
- 3 of 5 — Largest IP firms globally are customers or running pilots
- 2 months — Gap between launch (Feb 2026) and funding announcement