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Douglas A. Datt
Photo of Douglas A. Datt
Maryland - Rockville Office
15850 Crabbs Branch Way, Suite 330
Rockville, MD 20855

Tel:  (301) 948-1177
Fax:  (301) 948-4334

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Douglas A. Datt is a Partner in Kiernan Trebach’s Rockville, Maryland office. Prior to joining Kiernan Trebach, Mr. Datt practiced for more than thirty years with the firm of Gavett, Datt & Barish, a firm he co-founded as Gavett & Datt, P.C. in 1992. He is an experienced trial attorney and counselor working on behalf of both businesses and individuals. His excellent legal abilities translate not only to satisfied clients, but also to recognition by his peers. Mr. Datt has received a Peer Review Rating of "AV®", the highest rating by Martindale-Hubbell regarding an attorney’s legal ability and professional ethics.

Mr. Datt began his legal career as an Assistant District Attorney in the Atlantic Judicial Circuit in Hinesville, Georgia. After gaining valuable trial experience prosecuting major felonies, he returned to Maryland in 1983 where he served as Assistant State’s Attorney for Charles County, Maryland. Mr. Datt was responsible for prosecuting a variety of crimes including murder, rape, child abuse and theft-related offenses, among others. Mr. Datt then went into private practice.

Mr. Datt’s civil litigation practice includes advising clients and litigating in the areas of personal injury, construction defects and accidents, medical malpractice, worker's compensation and general tort defense litigation. Mr. Datt also represents individuals, corporations and businesses in matters ranging from collection, corporate formation, asset sales and purchases to employment-related issues. Mr. Datt is experienced in providing mediation and arbitration services to individuals and companies. In a mediation setting, he provides Alternative Dispute Resolution (ADR) services, assisting attorneys, individuals, companies and other groups to work together to identify and resolve their conflicts in a collaborative effort to avoid and/or limit expensive litigation.

In mediating or arbitrating matters, he brings his considerable experience to bear in addressing and handling disputes in the areas of personal injury, labor and employment, construction, business/commercial, workers’ compensation, malpractice, premises liability, insurance, and products liability cases.


Professional & Community Affiliations

  • Maryland State Bar Association
  • Virginia State Bar Association
  • District of Columbia Bar Association
  • Montgomery County Bar Association
  • Maryland Trial Lawyers Association
  • Association of Compensation Attorneys

Other Experience

  • Reported Cases
  • Cheeks of N. Am., Inc. v. Fort Myer Constr. Corp., No. 11-7117, 2012 U.S. App. LEXIS 15496 (D.C. Cir. July 26, 2012)
  • EEOC v. Conn-X, LLC, Civil Case No. L-09-2881, 2012 U.S. Dist. LEXIS 16316 (D. Md. February 8, 2012)
  • Bastian v. D.C. Dept. of Employment Services, 16 A.2d 975 (D.C. 2011)
  • Mackey v. D.C. Dept. of Employment Services, 976 A.2d 224 (D.C. 2009)
  • Capitol Paving of D.C., Inc. v. District of Columbia, 496 F. Supp. 2d 54 (D.D.C. 2007)
  • Dillon v. D.C. Dept. of Employment Services, 912 A.2d 556 (D.C. 2006)
  • D.C. Water & Sewer Auth. v. D.C. Dept. of Employment Services, 843 A.2d 750 (D.C. 2004)
  • Hudson Trail Outfitters v. D.C. Dept. of Employment Services, 801 A.2d 987 (D.C. 2002)
  • Park Ctr, III Ltd. P'ship v. Pa. Mfrs. Ass'n Ins. Co., 30 Fed. Appx. 64 (4th Cir. 2001)
  • Anderson v. Russell, 247 F.3d 125 (4th Cir. 2001)
  • Glass v. State, 171 Ga. App. 156, 319 S.E.2d 60 (1984)
  • White v. State, 169 Ga. App. 207, 312 S.E.2d 199 (1983)
  • Holloman v. State, 168 Ga. App. 683, 310 S.E.2d 734 (1983)
  • Holloman v. State, 167 Ga. App. 683, 307 S.E.2d 266 (1983)
  • Blair v. State, 166 Ga. App. 434, 304 S.E.2d 535 (1983)
  • Griffin v. State, 166 Ga. App. 176, 303 S.E.2d 514 (1983)
  • Williams v. State, 165 Ga. App. 553, 301 S.E.2d 908 (1983)
  • Petouvis v. State, 165 Ga. App. 409, 301 S.E.2d 483 (1983)
  • Jones v. State, 165 Ga. App. 180, 300 S.E.2d 534 (1983)
  • McKenzie v. State, 162 Ga. App. 522, 292 S.E.2d 722 (1982)
  • Weathers v. State, 160 Ga. App. 581, 287 S.E.2d 565 (1981)
  • Baxter v. State, 160 Ga. App. 181, 286 S.E.2d 460 (1981)


  • Walter F. George School of Law, Mercer University, J.D., 1981, Delta Theta Phi
  • Wake Forest University, B.A., cum laude, 1978

Bar and Court Admissions

  • Maryland
  • Virginia
  • District of Columbia
  • Georgia
  • United States District Court for the District of Maryland
  • United States District Court for the District of Columbia
  • United States District Court for the Eastern District of Virginia
  • United States Court of Appeals for the Fourth Circuit
  • United States Court of Appeals for the District of Columbia
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