What are the signature requirements for inventor’s oaths or declarations?

The signature requirements for inventor’s oaths or declarations are as follows:

• There is no requirement for a signature to be made in any particular manner.
• Inventors can use titles such as ‘Dr.’ in their signatures, but these won’t appear in the printed patent.
• Non-English character signatures are accepted.
• If an inventor cannot write, their mark must be witnessed.

According to MPEP § 602.08(b), “There is no requirement that a signature be made in any particular manner.” The section also states, “It is permissible for an applicant to use a title of nobility or other title, such as ‘Dr.’, in connection with their signature. The title will not appear in the printed patent.“

To learn more:

• inventor signature
• oath
• declaration
• patent application
• signature requirements