Legal outsourcing, also known as legal process outsourcing (LPO) refers to the practice of a law firm or corporation obtaining legal support services from an outside law firm or legal support services company (LPO provider). When the LPO provider is based in another country, the practice is called offshoring and involves the practice of outsourcing any activity except those where personal presence or contact is required, e.g. appearances in court and face-to-face negotiations. When the LPO provider is based in the same country, the practice of outsourcing includes agency work and other services requiring a physical presence, such as court appearances. This process is one of the incidents of the larger movement towards outsourcing. The most commonly offered services have been agency work, document review, legal research and writing, drafting of pleadings and briefs, and patent services. This phenomenon has been a part of the legal experience since the 1950s, where it was restricted only to patents. Later, firms began to contract certain services to back door firms. The process of subcontracting part of the legal process to different countries is at a nascent stage, with relatively consistent market growth. Legal process outsourcing has predominantly been to countries that had previously taken advantage of the business process outsourcing wave. LPO providers have established themselves in Canada, India, the Philippines, the United States, Israel, and Latin America.