CFR > Title 37 - Patents, Trademarks, and Copyrights > CHAPTER I—UNITED STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE > SUBCHAPTER A—GENERAL (parts 1 to 5) > PART 1—RULES OF PRACTICE IN PATENT CASES > SUBPART H—Inter Partes Reexamination of Patents That Issued From an Original Application Filed in the United States on or After November 29, 1999 (§1.902 to §1.997) > 1.947—Comments by third party requester to patent owner's response in inter partes reexamination.

1.947—Comments by third party requester to patent owner's response in inter partes reexamination.

Each time the patent owner files a response to an Office action on the merits pursuant to § 1.945, a third party requester may once file written comments within a period of 30 days from the date of service of the patent owner's response. These comments shall be limited to issues raised by the Office action or the patent owner's response. The time for submitting comments by the third party requester may not be extended. For the purpose of filing the written comments by the third party requester, the comments will be considered as having been received in the Office as of the date of deposit specified in the certificate under § 1.8.