Stilta, an artificial intelligence startup focused on patent analysis and enforcement, has closed a 10.5 million seed funding round led by Andreessen Horowitz. Founded in January 2024 by former McKinsey consultants Oskar Block and Oscar Adamsson, alongside QuantumBlack data scientist Tobias Estreen and data engineer Petrus Werner, the company aims to modernize intellectual property management through agentic AI workflows. The founding team identified patent law as a legacy sector historically dependent on manual reviews, spreadsheets, and outsourced legal counsel. Stilta addresses this bottleneck by breaking complex patent analyses into parallelizable digital tasks. Users initiate a workflow by defining a specific objective, such as identifying infringing patents, preparing litigation defenses, or auditing internal portfolios. The platform’s AI agents then scan patents, academic publications, legal filings, and web archives to collect relevant evidence. Secondary agents map the findings to specific patent claims and generate cited references, preserving attorney oversight while automating the most time-intensive research and documentation phases. Commercial adoption has accelerated quickly. Stilta now derives 60 percent of its revenue from law firms and 40 percent from corporate legal departments, with enterprise clients including pharmaceutical leader Roche and Danish logistics operator Maersk. The company markets its software as an efficiency engine for in-house legal teams, allowing them to retain patent work internally and reduce reliance on expensive external counsel. The patent technology market is increasingly contested, with Stilta competing against specialized platforms such as Patlytics and DeepIP that address the broader patent lifecycle from drafting to enforcement. The funding round reflects broader venture capital confidence in legal technology disruption. Beyond Andreessen Horowitz, the round was backed by Y Combinator and individual investors connected to artificial intelligence and corporate legal startups, including OpenAI, Lovable, and Legora. Block emphasized that the team carefully curated its capital table, strategically selecting Andreessen Horowitz and declining competing term sheets to secure long-term alignment. This transaction mirrors the firm’s prior thesis on legal automation, recently demonstrated through investments in patent drafting startup Fearn. By integrating agentic AI into established legal operations, Stilta is positioning itself to streamline how enterprises track, defend, and monetize intellectual property assets.