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About me

Mr. Sullivan has over forty years of litigation experience in multiple state and federal trial and appellate courts as well as before administrative agencies.  His trial experience includes federal tort and contract litigation, aviation liability, products liability, securities fraud litigation, and other complex litigation.  He is admitted and licensed to practice law in California, New York, Michigan, Hawai’i and North Carolina.  He is an experienced and active general aviation pilot with a commercial and multiengine rating.

Mr. Sullivan represents both individuals and businesses and does not limit his practice to only being a plaintiff’s or defendant’s counsel.  His diverse background includes litigation of serious personal injury cases (including cases in maritime law,) military court-martial representation, public and private sector labor arbitrations, public utilities commission proceedings in multiple states and federal Merit Systems Protection Board appeals.  Mr. Sullivan has a notable academic background ( summa cum laude and #1 in his class at Georgetown University, Washington, D.C., honors graduate of the nationally-ranked University of Michigan Law School) and prides himself on being willing to “take on” non-routine cases that require scholarship and diligent lawyering.

Mr. Sullivan is highly qualified to provide mature, competent counsel to business leaders on a broad range of federal and state law issues, including issues in the states other than California in which he is licensed.  Prior to early retirement and entering private practice in 2000, Mr. Sullivan had a full career as a senior in-house counsel with a major telecommunications company.  In addition to being a corporate officer of and the lead litigation lawyer for a large publicly-traded company, Mr. Sullivan was the “go to” expert on California employment law for that company’s law staff, serving as president of the California Employment Law Council and as an employment law lecturer to lawyers and human resource specialists.

During his corporate career, Mr. Sullivan simultaneously served in increasingly responsible positions as a judge advocate in the Naval Reserve Law Program.  Mr. Sullivan’s Navy duties included service overseeing a staff of lawyers providing wills and related advice to Navy and Marine Corps families, as well as duty as a command legal adviser on major staffs in California and Hawai’i and in the Office of the Secretary of the Navy.


Practice areas


  1. Employment: 30%
    37 years, 300 cases
  2. Litigation: 30%
    39 years, 300 cases
  3. Aviation: 15%
    44 years, 30 cases
  4. Federal Regulation: 10%
    44 years, 200 cases
  5. Other: 15%
  6. More 



Hourly ($300-395/hour), contingent (20-40%), Fixed (sometimes), Retainer (sometimes), Pro bono (15%)

Payment types:

Cash, Check

Attorney endorsements

3 total 

Are you an attorney? Endorse this lawyer

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    Mark's knowledge of the law is superb. When I consult him about questions in a particular area of the law, he almost always is able to provide the name or citation of the leading cases in that area. I have worked with him on several matters, and he not only has an impressive knowledge of the law and of procedure, but also is great to work with. He is dedicated, hard-working, and has a great sense of humor. I highly recommend him.


    Angela Sousa Employment and labor Attorney
    Relationship: Worked together on matter

  • Georgia Lee Williams

    I endorse this lawyer.


    Georgia Williams Child support Attorney
    Relationship: Fellow lawyer in community

Contact info

Law Offfice of Mark F Sullivan

2625 Townsgate Road, Suite 330
Westlake Village, CA, 91361


NYCurrently registered 197307/11/2016
MIActive And In Good Standing197208/03/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Southern California Super LawyerSuper Lawyers Magazine2015
Southern California Super LawyerSuper Lawyers Magazine2014
Southern California Super LawyerSuper Lawyers Magazine2013
Southrn California Super LawyerSuper Lawyers Magazine2012
Southern Caifornia Super LawyerSuper Lawyers Magazine2011
Southern California Super LawyerSuper Lawyers2010
Southern California Super LawyerSuper Lawyers2009
Southern California Super LawyerSuper Lawyers2008
Southern California Super LawyerSuper Lawyers2007
Southern California Super LawyerSuper Lawyers2006
Northern California Super LawyerSuper Lawyers2005
Southern California Super LawyerSuper Lawyers2004
Meritorious Service MedalU.S. Navy1993
Cum laudeUniversity of Michigan Law School1972
Summa cum laudeGeorgetown University1969
Phi Beta KappaGeorgetown University1969
Washington Club Award - #1 in Class of 1969Georgetown University1969
Work experience
TitleCompany nameDuration
PartnerSullivan, Johns & Lundberg LLP2015 - Present
Solo PracticeLaw Office of Mark F. Sullivan2014 - 2015
Senior PartnerSullivan Taketa LLP2000 - 2014
Associate General Counsel - LitigationGTE California Incorporated1989 - 2000
Vice-President & General CounselGTE Airfone Incorporated1987 - 1989
Litigation CounselGeneral Telephone Co. of California1984 - 1987
Litigation AttorneyGeneral Telephone Co. of the Southeast1982 - 1984
Litigation AttorneyGeneral Telephone Co. of Michigan1979 - 1982
Associate AttorneyLandman, Hatfaway, Lattimer, Clink & Robb1977 - 1979
Assistant to Special CounselOffice of the Secretary of the Navy1974 - 1977
Captain (O-6) - Federal Tort Claims, Administrative LawU.S. Naval Reserve, Judge Advocate General's Corps1972 - 2003
Association namePosition nameDuration
Casa PacificaMember, Human Resources Policy Board2005 - Present
Los Angeles County Bar AssociationMember2001 - Present
Ventura County Bar AssociationMember2001 - Present
International Comanche SocietyMember1997 - Present
Experimental Aircraft AssociationMember1995 - Present
Navy & Marine Corps Judge Advocates Assn.Member1989 - Present
North Carolina State BarMember1984 - Present
State Bar of CaliforniaMember1984 - Present
U S Court of Appeals for the Armed ForceTrial, Defense & Appellate Counsel1973 - Present
Aircraft Owners & Pilots Assn.Member1973 - Present
Hawaii State Bar AssociationMember1973 - Present
State Bar of MichiganMember1972 - Present
California Employment Law CouncilPresident1996 - 1997
California Employment Law CouncilBoard Member1991 - 1996
American Bar AssociationMember1979 - 1994
Muskegon County Bar AssociationMember1977 - 1984
Michigan Trial Lawyers AssociationMember1977 - 1982
School nameMajorDegreeGraduated
U.S. Naval Justice SchoolN/AN/A1973
University of Michigan Law SchoolLawJD - Juris Doctor1972
Georgetown UniversityEconomicsA.B., summa cum laude1969