Maureen Costigan

Of Counsel

Maureen Costigan is Of Counsel for the firm. She focuses her practice in the area of estate planning and estate administration. She is also involved in transactional work assisting individuals in forming business organizations and negotiating, preparing, or reviewing agreements. She also represents individuals and businesses in civil litigation.  Ms. Costigan first practiced in New Jersey, her home state, with the firm of Malsbury & Armenante. She moved to Washington D.C. in 1985 and worked for Robert M. Adler, Esquire until 1989. Thereafter, Ms. Costigan performed contract work for a number of attorneys including Kenneth J. Annis, Esquire, and The Donahue Law Firm.

Areas of practice

Bar & Court Admissions

  • District of Columbia, 1981
  • New Jersey, 1982
  • New Jersey, 1982
  • Maryland, 1989
  • U.S. District Court, New Jersey, 1982
  • U.S. District Court of District of Columbia, 1981

Professional Activities

  • District of Columbia Bar
  • New Jersey State Bar
  • Maryland State Bar


  • Cabrini College, B.A., magna cum laude, 1978
  • Law School – Catholic University, J.D., 1981; Villanova University, LL.M., 1984


  • 1981, District of Columbia
  • 1982, New Jersey and U.S. District Court, District of New Jersey
  • 1988, Maryland and U.S. District Court for the District of Columbia


  • Villanova University School of Law, LLM, Taxation, 1985
  • Catholic University of America, Columbus School of Law, Juris Doctor 1981
  • Cabrini College B.A., 1978

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