Five decades in the courtroom are not built on chance. They are built on preparation, discipline and an unwavering commitment to those who entrust you with their future. In January, Ridgewood-based Seigel Law marked its 50th anniversary—half a century of trial advocacy founded by Jan K. Seigel and now carried forward alongside his son, Jonas K. Seigel.
Jan built his reputation where it matters most: in the courtroom. He began in the Passaic County Prosecutor’s Office, trying more than 100 jury trials and securing several high-profile cases. The experience forged him into a trial lawyer.
“When you’ve tried that many cases, you learn one thing: preparation and experience win,” Jan says. “A courtroom is a courtroom.”
When he left public service to open his own firm, he carried that same discipline into personal injury litigation, bringing criminal trial rigor into civil justice.
Jonas’ path to the law was less linear. After college, he worked with autistic children at The Forum School in Waldwick while coaching lacrosse at Ramapo High School. Those years sharpened his ability to listen with patience, communicate with clarity and lead with accountability—qualities that still define his work in and out of the courtroom. He ultimately left those roles to attend law school, believing he could advocate for families when the stakes were highest.
During law school, he interned with the Prosecutor’s Office but soon realized his calling was helping families rebuild after life-altering injuries. After years in the trenches trying serious cases, he earned a master’s degree in trial advocacy from Temple University’s Beasley School of Law and was invited back as an adjunct professor.
When Jonas joined the firm, he quite literally followed in his father’s footsteps. Over time, he helped modernize and expand the firm’s reach while preserving its trial-focused foundation. Both Jan and Jonas were named Young Lawyer of the Year by the New Jersey State Bar Association early in their careers—underscoring the continuity of preparation and courtroom excellence that defines the firm.
When asked why he chose to join his father, Jonas reflects:
“As a young boy, I didn’t fully understand what my father did. I just knew he went to work and fought every day for people who couldn’t fight for themselves. As I grew older, I began to understand the weight of that responsibility. I didn’t want to inherit it. I wanted to earn my place beside my hero in the fight.”
Jan’s motivation traces back even further.
“My father was an immigrant,” he says. “He was brilliant and hardworking, but he never had the opportunity for a formal education. He made sure I did at Georgetown Prep, Georgetown University and Georgetown Law. More importantly, he taught me to stand up to bullies and to look out for the little guy.”
That philosophy became the foundation of Seigel Law.
“Insurance companies exist to generate profit. They have vast resources and teams of lawyers,” Jan says. “In the end, they can only send one lawyer into a courtroom. For 50 years, we have been the lawyers they hoped would not be standing there when the door opened.”
A defining decision behind the firm’s longevity was its early commitment to focus exclusively on personal injury law.
“Specialization matters,” Jan says. “Bruce Lee once said, ‘I fear not the man who has practiced 10,000 kicks once, but I fear the man who has practiced one kick 10,000 times.’ That stayed with me. We chose one area of law and practiced it relentlessly.”
Serious injury cases demand depth, courtroom experience, medical fluency and strategic precision.
“People facing catastrophic injuries do not need a lawyer who occasionally handles injury cases,” he says. “They need a specialist who has lived that fight thousands of times.”
Serious cases demand lawyers prepared to try them.
Today, that discipline defines the firm.
“Some firms are built by marketers and investors. Ours was built by trial lawyers,” Jonas says. “They measure success in volume and speed. We measure success at the end of a case when we sit down with our clients and ask one question: Did we make you proud? That difference matters.”
He continues, “Experience and results matter. But so does how people are treated. We combine serious trial preparation with concierge-level service, because clients deserve both strength in court and stability at home. When someone hires us after a catastrophic injury, they are not handed off or processed. They are guided, supported and kept informed at every stage.”
In recent years, as outside capital and marketing dollars have entered the personal injury space, advertising has surged.
“Visibility is easy to buy,” Jonas says. “Experience and reputation are not.”
He adds, “Insurance companies understand reputation better than anyone. They know which firms are prepared to try cases and which are likely to settle quickly. That knowledge influences every offer. Reputation is not about ego. It is leverage.”
“Scale is not skill. Brand recognition does not replace courtroom experience. Technology does not replace judgment. When someone entrusts us with a catastrophic injury case, they deserve seasoned trial lawyers who prepare from day one as if 12 jurors will one day weigh every decision we made.”
He pauses.
“Growth is easy when driven by volume—excellence demands responsibility.”
Helping others extends beyond the courtroom.
“Charity is not an initiative. It is part of our DNA,” Jonas says. After becoming partner, he established the Seigel Law Charity Fund and joined Pledge 1%, committing profits and time to charitable causes.
“If a cause involves underserved women or children, we pay attention.”
The firm supports organizations including the Emmanuel Cancer Foundation and Oasis—A Haven for Women and Children, guided by the belief that to whom much is given, much is expected.
That same spirit extends into Franklin Lakes, where Jan and Jonas have both lived since 1981. Jan served on the town’s Athletic Board and coached his four children, often still in a suit and tie. Jonas followed the same path with his two sons and now serves as a volunteer firefighter.
“In court, I stand up for families whose lives have been turned upside down. In Franklin Lakes, I show up when my neighbors need help,” Jonas says. “The responsibility is different. The mission is the same.”
As the legal landscape evolves, so does the firm. Seigel Law handles high-stakes matters involving serious cases involving serious circumstances.
These cases demand the same meticulous preparation and courtroom readiness that have defined the firm for five decades—now often on a national stage against some of the largest corporations in the world.
Looking back over 50 years, Jan is proud but not finished.
Preparation and experience built the first 50 years—trust carried them through the rest—and when it matters most, families already know where to turn.
Seigel Law
Address: 505 Goffle Rd #204, Ridgewood, NJ 07450
Phone: (201) 444-4000
Website: seigellaw.com
"As I grew older, I began to understand the weight of that responsibility. I didn’t want to inherit it. I wanted to earn my place beside my hero in the fight.” - Jan K. Seigel