Robert Ambrogi Blog
Seattle-based legal technology startup Supio has secured $60 million in Series B funding to accelerate the development and adoption of its AI-powered platform for personal injury law firms. The funding round was led by Sapphire Ventures with participation from Mayfield and Thomson Reuters Ventures, bringing Supio’s total funding to $91 million.
Sapphire Ventures is a recurring investor, having previously led Supio’s $25 million Series A funding round announced in August 2024.
According to Jerry Zhou, Supio’s cofounder and CEO, the fresh capital will be directed toward growth initiatives, expanding the company’s engineering and AI research teams, and expanding its Seattle headquarters and opening a new office as it doubles its 100-person staff.
The company specializes in personal injury and mass tort litigation, developing an AI-powered platform that helps law firms organize, analyze and prepare legal cases. Supio combines purpose-built AI models with human expert verification to improve accuracy and reliability in legal analysis.
According to the company, the platform has been valuable in litigation contexts where handling unstructured data is essential, such as processing legal documents, medical records, and handwritten notes.
“Our combination of specialized legal AI and human verification provides attorneys with accurate insights and drafting they can confidently use in negotiations and court,” Zhou said. “We’re building technology that doesn’t just save time, but fundamentally improves case outcomes.”
Supio says it has demonstrated measurable results for its law firm clients. The company reports that its platform has helped firms both win larger verdicts and increase the overall volume of cases they can handle.
In one high-stakes litigation example, Supio assisted TorHoerman Law in securing a $495 million verdict against Abbott Labs in a case involving allegations that cow’s milk-based infant formula caused intestinal inflammation in premature babies.
With a focus on PI and mass tort law firms, Supio’s platform delivers a suite of tools that automate and enhance the entire case lifecycle, from pre-litigation through litigation, with a strong focus on document intelligence, medical data analysis, and workflow efficiency.
Among the capabilities of its platform are:
- AI-generated demand letters.
- Interactive case chronologies.
- Case Signals, to monitor medical bills and records to flag potentially undiagnosed or misdiagnosed injuries.
- Document drafting for discovery, opening statements, deposition outlines, and other documents.
- Supio Assistant, an AI assistant that can help with a variety of litigation tasks.
“Supio is transforming how personal injury and mass tort litigation is practiced through specialized AI,” said Rajeev Dham, partner at Sapphire Ventures and Supio board member. “We believe their exponential growth demonstrates that law firms are embracing AI tools that deliver measurable advantages in case preparation and outcomes.”