§1.501. Citation of prior art and written statements in patent files. — Inbound Citations

(a) Any person may, at any time during the period of enforceability of a patent, file a request for an ex parte reexamination by the Office of any claim of the patent on the basis of prior art patents or printed publications cited under § 1.501, unless prohibited by 35 U.S.C. 315(e)(1) or 35 U.S.C. 325(e)(1). The request must be accompanied by the fee for requesting reexamination set in § 1.20(c)(1).

Unless specifically provided for, no submissions on behalf of any third parties other than third party requesters as defined in 35 U.S.C. 100(e) will be considered unless such submissions are in accordance with § 1.915 or entered in the patent file prior to the date of the order for reexamination pursuant to § 1.931. Submissions by third parties, other than third party requesters, filed after the date of the order for reexamination pursuant to § 1.931, must meet the requirements of § 1.501 and will be treated in accordance with § 1.902. Submissions which do not meet the requirements of § 1.501 will be returned.

(a) Except as provided for in § 1.907 and in paragraph (b) of this section, any person other than the patent owner or its privies may, at any time during the period of enforceability of a patent which issued from an original application filed in the United States on or after November 29, 1999, file a request for inter partes reexamination by the Office of any claim of the patent on the basis of prior art patents or printed publications cited under § 1.501.

(d) If the inter partes request does not include the fee for requesting inter partes reexamination required by paragraph (a) of this section and meet all the requirements of paragraph (b) of this section, then the person identified as requesting inter partes reexamination will be so notified and will generally be given an opportunity to complete the request within a specified time. Failure to comply with the notice will result in the inter partes reexamination request not being granted a filing date, and will result in placement of the request in the patent file as a citation if it complies with the requirements of § 1.501.

(b) If the request is not granted a filing date, the request will be placed in the patent file as a citation of prior art if it complies with the requirements of § 1.501.

(a) After the inter partes reexamination order, the third party requester may only cite additional prior art as defined under § 1.501 if it is filed as part of a comments submission under § 1.947 or § 1.951(b) and is limited to prior art:

(1) which is necessary to rebut a finding of fact by the examiner;

(2) which is necessary to rebut a response of the patent owner; or

(3) which for the first time became known or available to the third party requester after the filing of the request for inter partes reexamination proceeding. Prior art submitted under paragraph (a)(3) of this section must be accompanied by a statement as to when the prior art first became known or available to the third party requester and must include a discussion of the pertinency of each reference to the patentability of at least one claim.

(h) Submissions by third parties, filed after the date of the order for ex parte reexamination pursuant to § 1.525, must meet the requirements of and will be treated in accordance with § 1.501(a).

(2) An identification of every claim for which reexamination is requested, and a detailed explanation of the pertinency and manner of applying the cited prior art to every claim for which reexamination is requested. For each statement of the patent owner and accompanying information submitted pursuant to § 1.501(a)(2) which is relied upon in the detailed explanation, the request must explain how that statement is being used to determine the proper meaning of a patent claim in connection with the prior art applied to that claim and how each relevant claim is being interpreted. If appropriate, the party requesting reexamination may also point out how claims distinguish over cited prior art.

(a) Within three months following the filing date of a request for an ex parte reexamination, an examiner will consider the request and determine whether or not a substantial new question of patentability affecting any claim of the patent is raised by the request and the prior art cited therein, with or without consideration of other patents or printed publications. A statement and any accompanying information submitted pursuant to § 1.501(a)(2) will not be considered by the examiner when making a determination on the request. The examiner's determination will be based on the claims in effect at the time of the determination, will become a part of the official file of the patent, and will be given or mailed to the patent owner at the address provided for in § 1.33(c) and to the person requesting reexamination.

(d) Any statement of the patent owner and any accompanying information submitted pursuant to § 1.501(a)(2) which is of record in the patent being reexamined (which includes any reexamination files for the patent) may be used after a reexamination proceeding has been ordered to determine the proper meaning of a patent claim when applying patents or printed publications.