This is a top-tier Hollywood lawyer with years of legal private practice experience. He is known for his service as a federal prosecutor. Additionally, Mathew Rosengart represented Britney Spears. In 2024, Forbes included him in the list of the Top 200 Lawyers in America. Find out more about his success story and winning high-profile cases at los-angeles.pro.
Childhood and early career
Mathew Rosengart grew up in affluent Lido Beach, Long Island. He has been a sports fan since childhood, and his bedroom wall was covered in posters of the Yankees, New York Giants, Rangers and Knicks. In contrast, his older brother decorated his room with models of internal organs, having decided to pursue a career in medicine. Todd Rosengart became a cardiothoracic surgeon.
When Mathew was 13 years old, the father of the boys passed away due to a heart attack. The man, who was only 46 years old, worked as an obstetrician-gynecologist. His mother eventually remarried, but for Mathew, it was a hard blow.
The man holds a bachelor’s degree from Tulane University and a private research university in New Orleans and a doctorate in law from Boston College Law School in Massachusetts. He graduated with honors from the last one in 1987.
Mathew Rosengart began his professional career as a clerk for New Hampshire Supreme Court Justice David Hackett Souter. Then he worked as a supervisory assistant United States attorney and Trial Attorney for the U.S. Department of Justice. During his service on the last one, the Justice Department presented the man with a Special Achievement Award.
It is worth noting that they have maintained a friendly relationship with Judge David Souter for over thirty years. He taught Mathew not only how to be a lawyer but also how to serve the state and contribute to the general well-being of American society.
Private practice
In 2001, Mathew Rosengart decided to leave his position as public prosecutor and started a private practice. He specializes in media and entertainment lawsuits, commercial litigation and the protection of white-collar workers (employees of non-physical labor).
In 2011, Mathew Rosenberg joined Greenberg Traurig as a shareholder. It is a multinational law and lobbying firm founded in Miami in 1967 by Mel Greenberg, Larry Hoffman and Robert Traurig. In 2022, it ranked the ninth-largest law firm in the United States.
Mathew Rosengart represents the interests of celebrities, which earned him the title of one of Hollywood’s best lawyers.
He represented American director Steven Spielberg, American actor Sean Penn, singer Britney Spears, actress Julia Louis-Dreyfus, film director Kenneth Lonergan, professional basketball player Jimmy Butler and many other famous individuals.
The Kenneth Lonergan case
When he took this case in 2008, Mathew Rosengart understood what it meant to enter the entertainment industry. He took the victory in Kenneth Lonergan’s $8 million rights cut lawsuit for “Margaret.” It was a six-year struggle with a spectacular victory. Lonergan describes Mathew Rosengart as a dedicated, diligent and tireless representer. He has accomplished far more than one may imagine. In one of his interviews, the filmmaker compared Rosengart in the trial to Muhammad Ali in the ring.
The winning case of Sean Penn
In 2015, the lawyer defended Sean Penn in a $10 million defamation lawsuit against Lee Daniels, the director of “Empire”. Sean Penn won this case. The star of “Mystic River”, Sean Penn, was accused of domestic violence against his ex-wife Madonna. Lee Daniels stated it in an interview with the Hollywood Reporter, to which Penn categorically denied the claims and deemed them defamation against his honor and dignity.
Sean Penn was represented by Mathew Rosengart. Madonna testified under oath to verify his claims. She firmly denied allegations of physical violence by her ex-husband. These statements were critical to the trial.
Sean Penn’s primary motive was to defend his reputation that had been harmed by a false accusation. The trial allowed for the uncovering of the truth while protecting the rights of both parties.
The Britney Spears case
In July 2021, he started working on Britney Spears’s case to remove her father Jamie Spears’s long-term guardianship. As he listened to Britney Spears’ testimony, he recognized that she was a woman who fell victim to abuse and made the decision to represent her interests.
On November 12, 2021, Britney Spears won the case. Then, the pop star was liberated from a 13-year court-ordered job. Subsequently, she wrote a post expressing her gratitude to Mathew Rosengart.
After the end of the trial, the man achieved incredible popularity. He and Britney Spears were met by crowds of #FreeBritney protesters outside the Stanley Mosk Courthouse in Los Angeles. The audience held up placards saluting Rosenbart as a hero. You can still hear nicknames like “Zaddy” and “Rosengod” in his address.
Along with acclaim and celebrity status in real life, came popularity on social media. People started comparing the well-known Hollywood lawyer to Superman. Such sudden media popularity remains unusual for the man. He requires time to adjust to the constant attention he receives.
What is interesting is that Mathew Rosenbart’s role in Britney Spears’ life extended beyond the lawyer-client relationship, as he became her trusted adviser and an important figure in a number of high-profile disputes. It is worth delving more into the subject at hand.
- The major deal with Simon & Schuster for Britney Spears’ best-selling book “The Woman in Me”. After the autobiography was completed, the lawyer negotiated with the publishing company. He ensured the finest possible terms, including a significant fee and complete control over the book’s content. As a result, he took care of both the singer’s legal and financial interests.
- Prenuptial agreement and subsequent divorce from former husband Sam Asghari. The lawyer assisted Britney in creating a prenuptial agreement and represented her interests in the divorce lawsuit.
- A restraining order issued against ex-husband Jason Alexander, who attempted to disrupt her wedding with Asghari. As a result, the singer felt safe and was able to protect herself from further threats.
- Following the Chateau Marmont incident and her ankle injury, Spears stated that Rosengart assisted her in dealing with the consequences. We are talking about providing necessary medical care and legal assistance.
Recognition
Mathew Rosengart has garnered numerous awards over his career. According to the Los Angeles / San Francisco Daily Journal, he has been named one the top 100 lawyers in California three times by 2024. Rosengart’s court record is indisputable as he has not lost a single trial. This is the result of over a decade of diligence, perseverance and dedication. This is an important award that recognizes the greatest lawyers in California each year.
The Beverly Hills Bar Association presented Rosengart with the Excellence in Advocacy Award. He also received Variety’s Power of Law Award.
Rosengart’s friend, Judge Souter, has repeatedly stated that it is not the press that matters, but justice. He eventually changed his mind since he was pleased to read about the new victories of one of Hollywood’s greatest and most accomplished lawyers.
Mathew Rosengart lives and works at his firm’s Los Angeles office, where he continues to fight for justice.
