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With nearly 20 years of mediation experience, Greg David Derin, Esq. is now transitioning his mediation practice to Signature Resolution. Mr. Derin will focus on resolving business/commercial contracts, entertainment, intellectual property and trade secrets disputes.


Miranda DellaMaria


With more than 40 years in the legal industry, Greg David Derin, Esq. joins Signature Resolution as a mediator and arbitrator. For nearly 20 years, Mr. Derin has successfully assisted parties in resolving more than a thousand complex matters. He is often called upon to resolve disputes after previous attempts have failed. In his role at Signature, he will concentrate on matters involving contract, fraud, entertainment, intellectual property (copyright, trademark, idea submission), trade secret, right of publicity, unfair business practices, employment, class actions, partnership, real estate and legal malpractice disputes.

He is experienced in all phases of litigation and has handled matters before federal and state trial or appellate courts in California, New York, Illinois, Pennsylvania and other jurisdictions. He has appeared before the California Labor Commissioner, the tribunals of the Screen Actors Guild, American Federation of Television and Radio Artists, Directors Guild of America, Writers Guild of America, Major League Baseball Players Association, California Regional Water Quality Control Board, California State Water Resources Control Board and the National Association of Securities Dealers. Mr. Derin has tried cases as varied as a four-month construction defect case, talent agency disputes, and a Los Angeles Superior Court class action.

Mr. Derin is a member of the dispute resolution sections of the Beverly Hills, Los Angeles County and American Bar Associations, the Copyright Society of the United States, Los Angeles Copyright Society, the Los Angeles Intellectual Property Law Association, the Sports Lawyers Association and the Federal Bar Association. He is a past chair of the California State Bar Standing Committee on Alternative Dispute Resolution and the Southern California Chapter of the North American Branch of the Chartered Institute of Arbitrators. He is a Distinguished Fellow of the International Academy of Mediators, a Fellow of the Chartered Institute of Arbitrators, a member of the Arbitration and Mediation Panels of the CPR Panel of Distinguished Neutrals (Los Angeles, Entertainment and Employment Panels), the California and National Academies of Distinguished Neutrals, the World Intellectual Property Organization (WIPO), and an arbitrator available through the International Chamber of Commerce (ICC) and the London Court of International Arbitration (LCIA).

Twice each year for eight years, Mr. Derin assisted mediation pioneer Harvard Law School Professor Frank E.A. Sander, and Washington, D.C. mediators Linda Singer and Michael Lewis in teaching the prestigious Mediation Workshop at the Harvard Negotiation Institute.

Parties consistently attribute their successful resolutions to Mr. Derin’s persistence, creative solutions and his deep substantive knowledge and experience.


  • gdd Mediation and Arbitration, Mediator and Arbitrator (2002 – 2014)
  • Judicate West (2014 – 2019)
  • Greg David Derin, Attorney at Law (1997 – Present)
  • Del, Rubel, Shaw, Mason & Derin, Founding Partner (1989 – 1997)
  • Dern, Mason & Floum, Associate/Partner/Litigation Managing Partner (1979 – 1989)


  • J.D., University of California, Berkeley School of Law, California Law Review, Research and Book Review Editor
  • A.B., University of California, Berkeley, Phi Beta Kappa


  • Los Angeles Magazine, SuperLawyer, 2006 – 2020 (ADR)
  • “Power Mediator,” Hollywood Reporter


Miranda DellaMaria