Alexander Kardos‑Nyheim, a former Allen & Overy trainee, founded Safe Sign Technologies in 2022 while juggling law school and a morning routine that began at 4 a.m. The idea sprouted from a teenage planning dispute at his family home in south‑east London, where he taught himself planning law to help his mother fight a developer’s redevelopment bid.
The startup struggled to secure UK‑based venture capital; after repeated rejections, Kardos‑Nyheim flew to New York with only £200 in his pocket. He landed funding from a consortium of North American investors, who asked how they could help rather than how the venture might fail, according to a Fortune interview.
Instead of selling a consumer legal app, the team pivoted to building domain‑specific large language models. Researchers from Cambridge, MIT, Harvard and DeepMind joined the effort, aiming to create AI that could parse statutes, precedents and contractual clauses with legal precision.
On 21 Aug 2024, Thomson Reuters announced it had acquired Safe Sign Technologies, a pre‑revenue company, for an undisclosed sum. Reuters CFO Arun Krishnan said the deal will accelerate the firm’s legal‑AI roadmap and enable the launch of an AI‑powered legal suite by Q4 2025.
The acquisition signals a shift in how AI firms are valued when their proprietary technology outpaces immediate revenue streams. For small law firms and solo practitioners, the integration of Safe Sign’s models into Thomson Reuters’ platform could mean faster, more reliable research tools and lower costs, a prospect that has already sparked interest among early‑stage legal tech adopters.