4.106—Representation and appearances.
(a) The Appellant.
An individual appellant may appear before the Board in person, a corporation by one if its officers; and a partnership or joint venture by one of its members; or any of these by an attorney at law duly licensed in any state, commonwealth, territory, the District of Columbia, or in a foreign country. An attorney representing an appellant shall file a written notice of appearance with the Board.
(b) The Government.
Department or Government counsel may, in accordance with their authority, represent the interest of the Government before the Board. They shall file notices of appearance with the Board, and notice thereof will be given appellant or appellant's attorney.