Mark M. DelRosario

Senior Counsel

  • Office Contact Info
  • Biography

    Mark DelRosario is Senior Counsel in GRSM’s Atlanta and Los Angeles offices and a member of the Commercial Litigation practice group. With a track record for successfully defending and advocating for his clients, Mark focuses on business and commercial litigation and transactions, intellectual property law, entertainment law, cyber, data breach and technology litigation, and constitutional law. He has successfully litigated cases around the country, in both state and federal courts, for a full range of clients, including large, publicly traded corporations, small businesses, nonprofit organizations, franchisors, franchisees, and individuals.

    In his intellectual property practice, Mark manages and protects clients’ IP portfolios, assists with copyright and trademark registrations and maintenance, and protects and defends individuals and businesses in copyright, trademark, domain name, false advertising, and trade secret litigation.

    As an entertainment attorney, Mark has represented both creative talent and production companies that work closely with all of the major studios and talent agencies. He has assisted with contract negotiations, resulting in lucrative business deals for his clients. He has also helped his clients navigate through difficult litigation issues, leading them to successful resolution of contentious matters.

    Mark also has experience with First Amendment issues and has handled and defeated motions and lawsuits in various states, for matters involving free speech and anti-SLAPP, commercial speech, defamation, and church-state entanglement disputes.

    Mark has worked for prestigious law firms in the United States and in Europe and has also been in-house counsel for an international corporation, giving him a broad and global understanding to meet the needs and goals of his clients.


    • Georgia 
    • California 
    • New York 
    • U.S. District Court, Central and Southern Districts of California 
    • U.S. District Court, Northern District of Georgia


    • Federal Bar Association
    • Georgia Asian Pacific American Bar Association
    • National Filipino American Lawyers Association
    • Atlanta Bar Association
    • State Bar of New York State
  • Practice Areas
  • Education


    J.D., The University of Georgia School of Law, 2003

    A.B.J., magna cum laude, The University of Georgia, 2000


    "Top Lawyers in California," American Lawyer Media

    "10 Best Intellectual Property Attorneys in California," The American Institute of Legal Counsel