Founder & Managing Attorney
Eldonie S. Mason, Esq.
Strategic. Business-First. Built for Entertainment.
With more than 21 years of high-stakes legal experience and nearly two decades dedicated to entertainment law, Eldonie S. Mason, Esq. has built her career at the intersection of law, business, and creativity.
As the founder of Mason Firm, she provides executive-level strategic counsel to the people, productions, businesses, and communities shaping New Jersey’s entertainment industry. Her business-first approach helps clients identify what is truly at stake, protect the value of what they are building, and make decisions that support where they intend to go next.
Engineering Deals. Securing IP. Commanding the Table.
Entertainment law requires a clear understanding of how ownership, compensation, control, risk, and future opportunities work together to create—or diminish—commercial leverage. Throughout her career, Eldonie has commanded high-stakes matters across film and television production, music, intellectual property, and high-level commercial transactions.
She evaluates every transaction within the larger context of her client’s objectives—identifying pressure points, securing critical rights, and structuring terms that shape the commercial realities of the opportunity.
Her strategic judgment is anchored by a formidable foundation spanning transactional counsel, business affairs, dispute resolution, and complex commercial litigation—including past representation of one of the world’s largest technology companies. This breadth of experience allows her to anticipate legal and commercial risks and protect her clients’ leverage long before an issue threatens the opportunity.
Experience That Matters
21+
Years of Legal Experience
18+
Years in Entertainment Law
3
States Licensed (New Jersey, New York & Florida)
400+
Litigation Matters Handled for Amazon
Professional Memberships
- Recording Academy Professional Member
- British Academy of Film and Television Arts (BAFTA)
- New York Women in Film & Television
Bar Admissions
- New Jersey
- New York
- Florida
- United States Supreme Court
- U.S. District Court for the District of New Jersey
Education
University of Miami School of Law
Juris Doctor, cum laude
New Jersey City University
Bachelor of Arts, Political Science, magna cum laude
Speaking & Thought Leadership
Eldonie is a frequent speaker and educator on entertainment law, intellectual property, music business, film, and entrepreneurship. She has presented at film festivals, universities, industry conferences, and professional organizations, sharing practical insights that help creative professionals and entertainment businesses navigate an evolving industry
Additional Credentials
Beyond private practice, Eldonie has served as a Commercial Arbitrator with the American Arbitration Association, taught Music Publishing, Licensing and Copyright as an Adjunct Professor at York College of Pennsylvania, and represented one of the world's largest technology companies in commercial litigation. These experiences provide a broad perspective that strengthens her ability to advise clients on both legal and business matters.
A Business-First Philosophy
The strongest legal strategy does not exist in a vacuum. It must actively drive the business behind the decision.
Eldonie anchors her approach in the client’s ultimate objective: what are they building, what matters most, and what must remain possible? She aligns legal execution directly with commercial realities, industry relationships, timing, resources, and long-term vision.
The result is executive-level counsel that maximizes leverage and positions the project, career, or business to capture its full commercial potential.