The Oregon Certificate of Service is a document issued by the Oregon state court system as proof that a particular document has been served to the intended recipient. This document can be used to prove legal service of documents such as summons, complaints, subpoenas, garnishments, orders, and other court documents. There are three different types of Oregon Certificate of Service: Personal Service, Substituted Service, and Direct Service. Personal Service requires the document to be served directly to the recipient, while Substituted Service allows the document to be served to someone else who is at least 18 years old and lives in the same household as the recipient. Direct Service requires the document to be delivered directly to the recipient’s place of business or residence. The Oregon Certificate of Service must be signed by the person who served the document, and includes details such as the date of service, method of service, and name of recipient.