In conversation with Natalia Chumak and Pietro Grassi at Signature Litigation
This story features insights from Natalia Chumak, Partner at Signature Litigation, and Pietro Grassi, Senior Associate in the firm’s international arbitration team. Natalia leads the strategic development of Signature’s arbitration practice and oversees innovation initiatives, including the integration of AI. Pietro brings deep experience in both investor-state and commercial arbitration, with a strong focus on research precision and document strategy.
Together, they share how Signature Litigation is using Jus AI – powered by Jus Mundi to elevate their arbitration work – making research faster, workflows sharper, and client outcomes stronger.
Inside Signature Litigation
Established in 2010, Signature Litigation is a specialist dispute resolution firm with over 10 years of expertise in high-value, complex, multi-jurisdictional litigation and arbitration. Headquartered in London, the firm operates across four global offices.
“Signature is a great mix of top technical expertise and entrepreneurial spirit,” explains Natalia. “We’re truly collaborative in the way we work – we don’t compete with each other, and our clients very much benefit from that.”
The firm’s strength lies in its diversity across nationality, religion, gender, education, and qualifications, enabling them to examine every case from multiple angles and deliver exceptional client value.
Meeting the Demands of Modern Arbitration
Signature Litigation needed innovative solutions to maintain its competitive edge in complex international arbitration cases. The firm identified two critical areas requiring enhancement: conducting efficient research with direct answers, and benchmarking their expertise against broader comparative experience.
“We are a busy practice, and given our ethos, we operate lean teams,” notes Natalia. Pietro adds: “I’m looking for depth and precision – finding cases with overlooked issues that I wouldn’t discover through traditional searches.”
Recognizing that AI adoption was inevitable in the legal sector, the firm chose to be proactive rather than reactive to technological change, turning to Jus AI, our powerful suite of AI assistants tailor-made for arbitration.
How Jus AI Fits In
Jus AI isn’t just another tool in Signature Litigation’s tech stack. It is now embedded into how the team researches, collaborates, and delivers value. From daily casework to high-level strategy, Jus AI supports every layer of their arbitration practice with legal-specific intelligence, speed, and reliability.
Purpose-built for international legal professionals, Jus AI stood out by combining multilingual legal research, secure document handling, and deep domain knowledge, all tailored to arbitration and litigation workflows.
Here’s how Jus AI is delivering tangible impact:
Improved Workflows and Time Savings
“Any time saved on one work stream means you can redirect that time to another work stream where you need to add more depth,” notes Natalia. For complex investor-state cases, Jus AI helps uncover overlooked valuable data from cases known for specific issues.
Enhanced Research Efficiency
“Jus AI is more efficient than traditional research tools because it allows us to get direct answers quickly and research in a more targeted manner,” explains Natalia. Pietro, who uses the Jus AI daily, added: “Jus AI takes me directly to the answer I need, allowing me to spend more time stress testing that answer.”
Strong Security and Team Adoption
To ensure responsible AI use and protect client confidentiality, all team members completed mandatory training with isolated workspaces and document deletion capabilities. “Associates are very keen to use it. Partners very much support and encourage Jus AI use within the team,” reports Natalia.
Deeper Knowledge Benchmarking
Jus AI enhances Signature Litigation’s strong foundation by surfacing insights from a broader legal landscape. “Jus AI gives us access to much broader comparative experience than we have in practice,” says Natalia. “It’s a great way to benchmark our knowledge, stress test it, and offer better value to clients.”
Advanced Document Production
Pietro has expanded usage beyond research: “I’ve been using Jus AI to upload documents and improve document production in response to documents from the other side,” including work with Redfern schedules available on Jus Mundi and benchmarking against other practitioners’ approaches.
Real-Time Client Support
Jus AI enhances client meetings when specific details are needed quickly. “Jus AI allows us to find answers quickly, which improves the overall quality of meetings because we can cover more ground,” explains Natalia.
Embracing the AI Future
Both Natalia and Pietro believe that integrating AI into legal practice is not just inevitable – it’s a strategic advantage.
“AI, and Jus AI as part of it, is the future. You need to embrace it and be proactive,” says Natalia. “Just make sure someone senior is guiding the onboarding and integration internally, and that you’re working collaboratively with your provider to continuously improve the tool.”
Pietro adds a practical call to action:
“Take the time to learn how to use the tool. It’s not a threat – it’s a resource. You can ride the wave or risk falling behind.”
Client Engagement Is Growing
Clients, especially those with sophisticated internal teams, increasingly want to see AI in action. Signature Litigation is already seeing interest from clients eager to explore how tools like Jus AI can support strategy and collaboration.
“Our clients are keen for us to use AI products – and some want to be directly involved in the process,” says Natalia.
Through strategic AI adoption with Jus AI, Signature Litigation has enhanced research capabilities, improved client service, and positioned itself at the forefront of legal innovation while maintaining their collaborative, high-quality approach.
Ready to see how Jus AI can elevate your practice?
