How does the USPTO handle correspondence in ex parte reexamination with multiple patent owners?

In ex parte reexamination proceedings involving multiple patent owners, the USPTO has specific procedures to manage correspondence efficiently. According to MPEP 2264:

“Where there are multiple patent owners, the Office may treat the mailing address of the first named patent owner of record as the correspondence address of the patent owner. The Office will not engage in double correspondence with more than one patent owner.”

This approach ensures that:

• Communication is streamlined by using a single correspondence address
• The first named patent owner of record is responsible for disseminating information to other patent owners
• The USPTO avoids potential confusion or conflicts that could arise from multiple correspondences

It’s important for multiple patent owners to coordinate among themselves to ensure that all parties receive necessary information. The designated correspondence address should be kept up to date with the USPTO to prevent any communication issues during the reexamination process.

To learn more:

• multiple patent owners
• correspondence address
• ex parte reexamination
• USPTO communication