AI patent platform Stilta completes $10.5 million seed round financing, led by a16z

AI patent startup Stilta announced the completion of a $10.5 million seed round financing, led by Andreessen Horowitz, with participation from Y Combinator and individual investors from companies such as OpenAI, Legora, Sana, Lovable, and Listen Labs.

The new funding will primarily be used for hiring engineers, patent experts, and marketing teams. The company plans to expand its team to about 10 people over the next 3 to 6 months and aims to establish an office in New York by the end of this year or early 2027.

Stilta focuses on AI Agent-driven patent management software, primarily targeting scenarios such as patent infringement identification, patent licensing opportunity exploration, and patent litigation defense. Its platform can analyze hundreds of millions of patents, research papers, and historical web data to help companies and law firms manage patent assets.

The company was founded this year by former McKinsey members Oskar Block, Petrus Werner, Tobias Estreen, and Oscar Adamsson, and was selected for the YC Winter 2026 incubation program. Currently, about two-thirds of its clients are from the corporate sector, while the rest are from law firms.

According to reports, Stilta is developing hundreds of AI Agents to perform various tasks such as infringement analysis and patent invalidation analysis, with customized adjustments for highly specialized fields like pharmaceuticals. In recent years, a16z and YC have continued to increase their investments in the legal tech sector. Previously, a16z has invested multiple rounds in the AI legal assistant Harvey; YC has also recently invested in legal AI companies such as Legora, PointOne, and Parlai.