Law Office of D.L. Drain, P.A. was founded in 1990 by Diane L. Drain, counselor and attorney-at-law, an Arizona native. Diane has worked as a lawyer in Phoenix, Arizona since 1985. She is licensed in the State of Arizona and the United States District Court of Arizona and the United States Court of Appeals for the Ninth Circuit. he practices only the areas of bankruptcy and real estate laws.