The Oregon Certificate of Service is a legal document used in Oregon courts to prove that a court document was served to the other party in a legal dispute. It can be used in civil cases, family law cases, and criminal cases. There are two types of Oregon Certificate of Service: in person service and substituted service. In person service involves the court officer delivering the court documents directly to the other party in the dispute. Substituted service involves the court officer leaving the documents with an adult family member or other responsible person at the other party's place of residence or place of business. All Oregon Certificates of Service must include the date and time of service, the address where service was made, the name of the party served, and the name of the court officer who served the documents.