By Christopher A. Brown, an associate in the Food and Drug practice group of the law firm Sonnenschein Nath & Rosenthal LLP in its Washington, D.C. office. Teisha C. Johnson was a summer associate with the law firm of Sonnenschein Nath & Rosenthal LLP in its Washington, D.C. office during the summer of 2005 and is a student at the Georgetown University Law School.