How is correspondence addressed in PCT applications with multiple applicants?

The MPEP provides guidance on addressing correspondence in PCT applications with multiple applicants:

• If there’s a common agent appointed, correspondence is addressed to that agent or the first-mentioned agent.
• If no common agent is appointed, correspondence is addressed to the common representative at their indicated address.
• If the common representative has appointed agents, correspondence goes to that agent or the first-mentioned agent.

The MPEP 1834 states: “Where there are two or more applicants who have appointed one or more common agents, correspondence will be addressed to that agent or the first-mentioned of those agents. Where no common agent has been appointed, correspondence will be addressed to the common representative.”

To learn more:

• PCT
• multiple applicants
• correspondence
• common agent
• common representative