In Washington, you personally serve papers by having someone 18 or older and of sound mind deliver them to the recipient. The person effecting service cannot be you. It doesn't need to be a professional process server though. For example, a friend can do it.
The original special interrogatories and signed proof of service should be retained for your records. If the other party does not respond to your requests, you may use these documents to support a motion to have the court compel responses.
Fill out Proof of Service form You can use Proof of Service by Mail (form FL-335). It helps if you fill in the top part of the form with the case and court information. Your server can then fill in the information about how, when, and where they served the papers. Your server must then sign the form.
For interrogatories, action words such as “list,” “describe,” “identify,” or “state” are very useful. You may ask the other side to identify a document but you cannot use this form of discovery to get them to give it to you. Requesting documents requires a different kind of discovery process.
For interrogatories, action words such as “list,” “describe,” “identify,” or “state” are very useful. You may ask the other side to identify a document but you cannot use this form of discovery to get them to give it to you. Requesting documents requires a different kind of discovery process.
Interrogatories may, without leave of court, be served upon the plaintiff after filing of the complaint and upon any other party with or after service of the summons and complaint upon that party.
The rules of practice require that responses to interrogatories are provided under oath, which in your case, would be taken by a Notary. If it is not done, the other side can compel you to do it this way, so doing it now would be best.
Rule 26 initial disclosures and discovery requests and responses must not be filed unless they are used in the proceedings or the court orders filing.
Parties may obtain discovery regarding any matter, not privileged, which is relevant to the subject matter involved in the pending action, whether it relates to the claim or defense of the party seeking discovery or to the claim or defense of any other party, including the existence, description, nature, custody, ...