Your Success,
Our Mission.
Complex matters demand clarity. We bring precision, power, and practical solutions to every case.
Sigman, Khan & Chubb, PLLC is the law firm for businesses that demand more than legal answers…they demand strategic advantage.
We deliver sharp strategy, proven experience, and direct, client-first counsel built to win deals and resolve disputes. Our partners bring big firm skill and entrepreneurial insight to every engagement, providing clarity, confidence, and results without unnecessary overhead. From securing intellectual property and launching new businesses to navigating complex litigation and high-stakes mergers and acquisitions, SK&C is the trusted partner for companies operating at the intersection of growth, risk, and opportunity.
Areas of Expertise
Meet Our Partners
Lisa Sigman
Lisa combines 20+ years of legal expertise and entrepreneurial insight to guide businesses from formation through growth and complex M&A, delivering big firm sophistication with boutique responsiveness.
Sara Khan
Sara delivers winning outcomes in high-stakes business and personal injury litigation, leveraging experience from 40+ trials to protect clients when it matters most.
Diane Chubb
Diane turns a business’s creativity into a strategic advantage, leveraging 25+ years of intellectual property expertise to help companies secure trademarks, protect ideas, and build proactive strategies for long‑term success.
Why Choose SK&C Legal?
Professionalism
We are a professional service firm rooted in deep expertise, ethical stewardship, and the belief that legal counsel is a high-level craft, not a transactional product.
Partnership
We proactively manage our clients' legal interests as if they were our own. We look ahead to identify potential risks, and more importantly, untapped opportunities for growth.
Reliable Connection
Communication is the bridge between strategy and success. We have solved the "unreachable-attorney" problem by prioritizing consistent accessibility and scheduled availability. By removing communication bottlenecks, we ensure our expertise is always an active resource for your team.
Intellectual Curiosity
We dive deep into our clients’ business models because we are genuinely invested in how they work. This curiosity allows us to move beyond being mere technicians, suggesting the "what’s-next" that turns creative work into scalable assets.
SKC Legal has been recognized by Massachusetts Lawyers Weekly as a “Best Up and Coming Law Firm,” an honor awarded to firms demonstrating strong growth, professional excellence, and emerging leadership within the Massachusetts legal community. Attorney Chubb has also been honored as a Boston magazine Top Lawyer™ 2025, which is based on peer nominations and independent research identifying attorneys who have achieved a high level of professional accomplishment within their practice areas.
My wife and I both separately worked with Diane and Joy, and what an amazing team! Where most IP lawyers we've spoken to stick to a boilerplate factory model, these guys really think through your case, and think creatively about how to achieve your business objectives. These business are our lives, they mean everything to us - and Diane and her team understand that; they invest themselves in your work, in your business, taking a personal, emotional stake in it. If you are looking for real partners in making your business a success, I can't recommend them highly enough!
– Darin Bellisario, Owner, RCO Society, Ltd.Lisa is extremely helpful and professional. She is very knowledgeable in her trade. She is upfront and honest with what services she offers and what needs to be done! I will continue to use Lisa's services for as long as necessary!
– Brandon Walsh
Working together has demonstrated a commitment to quality leading to cutting-edge solutions. Their customer service is exceptional, with a focus on building strong relationships and addressing client needs effectively.
– RR Selah, LLC