About
Daniel N. Csillag is a Partner at Murphy Rosen LLP who represents corporate and individual clients as plaintiffs and defendants in complex litigation. His practice covers fraud, breach of contract, fiduciary duty claims, real estate, antitrust, securities, partnership disputes, employment matters, trade secrets, cybercrime, unfair competition, trusts and estates, and healthcare fraud. He handles matters in federal and state courts while guiding clients through pre-lawsuit disputes, litigation, investigations, and appellate proceedings.
Daniel earned a J.D. from Southwestern Law School in 2009. During law school, he gained substantial legal research experience, including work as a research assistant on scholarly projects involving contract law. His legal education provided a foundation for handling complicated commercial disputes, statutory claims, jurisdictional questions, and appellate issues. That training supports his ability to analyze detailed records, develop legal arguments, and address cases involving overlapping business, regulatory, and litigation concerns.
Daniel previously practiced at O’Melveny & Myers LLP from 2009 through 2016 and completed an externship with US District Judge Dean D. Pregerson. His experience includes False Claims Act litigation, partnership disputes, trade secret and cybercrime cases, securities investigations, antitrust matters, employment claims, and healthcare investigations. He has represented clients in investigations initiated by Congress, the Department of Justice, the Securities and Exchange Commission, and the Office of Inspector General, along with appellate matters involving complex jurisdictional questions.
Daniel N. Csillag combines commercial litigation, appellate advocacy, and investigative experience with a commitment to pro bono representation. He has represented the Brennan Center for Justice in California Public Records Act matters, assisted an underage rape survivor with a U Visa application, and represented a federal inmate seeking clemency. His broader practice reflects experience managing sensitive disputes involving corporations, executives, charitable organizations, business owners, and individuals across complicated civil and regulatory matters.
Law Office Affiliations
- Partner, Murphy Rosen LLP
- Member, The State Bar of California
Licensed State
- California
Education
- Southwestern Law School
Juris Doctor (JD) - University of California at Santa Cruz
Bachelor of Arts (BA)
Awards & Badges

- Business Litigation
- Corporate & Incorporation
- Franchise, Dealership & Partnership
- Professional Liability
- Trusts
- Appeals
- Litigation
- Employment Litigation
- Intellectual Property Litigation




