Mark D. Byrne Esq.

Mark D. Byrne Esq.

Of Counsel
Berkeley, California

Mark D. Byrne joined Triano & Byrne in 1992 and currently serves as Of Counsel. He has over 30 years of legal experience, including multiple trials involving fraud, breach of contract, dissolution of partnerships, dissolution of limited liability companies, and piercing of the corporate veil, complex federal commercial litigation, real property litigation, and complex family law matters.

Mark firmly believes in giving back to the community. He previously served on the Board of Directors for CASA Contra Costa County, the St. Joseph’s Church of Pinole Pastoral Council, the School Board and Master of Ceremonies for St. Joseph’s Elementary School in Pinhole, and as the president of the Hercules Rotary Club.

Prior to joining Triano & Byrne, Mark worked as an attorney in various law firms located in San Pablo, San Ramon, and Stockton, California.

Year Joined Firm

  • 1992

Areas of Practice

  • Business Litigation and Corporate Formation
  • Commercial and Residential Real Property Litigation, including Land Use, Water Law, and Landlord-Tenant Disputes
  • Family Law, including Child Abuse, Domestic Violence, Mental Illness, Complex Tracing, and Spousal and Child Support
  • Bankruptcy and Probate/Trust Litigation

Bar Admissions

  • California, 1983


  • McGeorge School of Law, University of the Pacific, Sacramento, California
    • J.D. - 1983
  • University of California, Riverside, California
    • B.S. - 1980
    • Major: Environmental Sciences

Pro Bono Activities

  • Hercules Rotary Club, 1986 - Present
  • Hercules Rotary Club, President, 1992 - 1993
  • St. Joseph's Elementary School, Pinole, Master of Ceremonies for Auction, 2002 - Present
  • St. Joseph's Elementary School, Pinole, School Board, 1997 - 2001
  • St Joseph's Church Pinole Pastoral Council, 2000 - 2006
  • Board of Directors, CASA Contra Costa County, 1990 - 1996
  • Legal advice for case workers, CASA Contra Costa County, 1989 - 1994
  • Battered Woman's Alternative (now STAND!), 1984 - 1992


  • Kappa Alpha Order