An advocate is a legally trained professional to practice law before a Court of Law. An advocate is authorized to appear before the court in the cases on behalf of a party. However, an Advocate on Record (AOR) is a special category of advocate who is entitled to file a memorandum of appearance on behalf of party accompanied by a Vakaltanama duly executed by the party in the matter to conduct and prosecute before the Supreme Court of India. As per the Rules, no advocate other than an advocate on record shall be entitled to file an appearance or act for a party in the Supreme Court of India. No advocate other than an Advocate on Record (AOR) can appear and plead in any matter unless an advocate on record instructs him.