What are the submission methods for inter partes reexamination correspondence?

The MPEP outlines several methods for submitting correspondence in inter partes reexamination proceedings:

1. Electronic Filing System (EFS-Web): Registered users may submit via the electronic filing system EFS-Web, at https://efs.uspto.gov/efile/myportal/efs-registered
2. Mail: Mail Stop Inter Partes Reexam, Attn: Central Reexamination Unit, Commissioner for Patents, United States Patent & Trademark Office, P.O. Box 1450, Alexandria, VA 22313-1450
3. Fax: (571) 273-9900 Central Reexamination Unit
4. Hand Delivery: Customer Service Window, Randolph Building, 401 Dulany Street, Alexandria, VA 22314

For EFS-Web submissions, the MPEP notes: For EFS-Web transmissions, 37 CFR 1.8(a)(1)(i) (C) and (ii) states that correspondence (except for a request for reexamination and a corrected or replacement request for reexamination) will be considered timely filed if (a) it is transmitted via the Office’s electronic filing system in accordance with 37 CFR 1.6(a)(4), and (b) includes a certificate of transmission for each piece of correspondence stating the date of transmission, which is prior to the expiration of the set period of time in the Office action.

It’s important to use the correct submission method to ensure timely and proper filing of reexamination documents.

To learn more:

• inter partes reexamination
• correspondence submission
• EFS-Web
• USPTO communication