Prosecution Insights
Last updated: August 16, 2026
Application No. 18/853,478

ROLLING MILL, COLD ROLLING METHOD, AND METHOD FOR PRODUCING STEEL SHEET

Non-Final OA §103
Filed
Oct 02, 2024
Priority
May 25, 2022 — JP 2022-085431 +1 more
Examiner
KIM, BOBBY YEONJIN
Art Unit
Tech Center
Assignee
JFE Steel Corporation
OA Round
1 (Non-Final)
77%
Grant Probability
Favorable
1-2
OA Rounds
10m
Est. Remaining
98%
With Interview

Examiner Intelligence

Grants 77% — above average
77%
Career Allowance Rate
313 granted / 408 resolved
+16.7% vs TC avg
Strong +22% interview lift
Without
With
+21.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
31 currently pending
Career history
426
Total Applications
across all art units

Statute-Specific Performance

§101
1.1%
-38.9% vs TC avg
§103
37.2%
-2.8% vs TC avg
§102
28.5%
-11.5% vs TC avg
§112
30.2%
-9.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 408 resolved cases

Office Action

§103
DETAILED ACTION The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Claim Rejections - 35 USC § 103 The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claim 1-6 is/are rejected under 35 U.S.C. 103 as being unpatentable over JP S 6041283 Y2, hereinafter JPS. Regarding claim 1, JPS discloses a rolling mill (Fig. 1-13) comprising at least one stand configured to roll a material (2) to be rolled, wherein at least one stand includes: at least one pair of rolling mill rolls (1); a roll chock (5) that rotatably support the rolling mill rolls; and a roll chock liner that includes a first liner plate (11) mounted on the roll chock, a second liner plate (7) stacked on the first liner plate in a rolling direction, and an elastic member (12) interposed between the first liner plate and the second liner plate. JPS is silent to the rolling mill having a plurality of stands. Examiner takes official notice that it would have been obvious to one having ordinary skill in the art at the time of filing to add to the rolling mill with multiple stands that are the same structure as the stand of JPS in order to reach specific thickness of the material being rolled. Examiner notes that providing multiple roll stands are well-known in the art of rolling to produce effective rolling thickness reduction to reach desired product thickness. Regarding claim 2, JPS teaches the rolling mill according to claim 1, wherein the stands are each provided with the roll chock liner including the first liner plate, the second liner plate, and the elastic member. (as modified all stands would have the same structure) Regarding claim 3, JPS teaches the rolling mill according to claim 1, wherein the first liner plate (11) is fastened to the roll chock (5) with a fastener (17) passed through the first liner plate in the rolling direction, and each of the second liner plate (7) and the elastic member (12) has an opening (see Fig. 8-12: 7 and 12 have openings that allows 17 to go through) in which a head of the fastener is housed. Regarding claim 4, JPS teaches the rolling mill according to claim 2, wherein the first liner plate is fastened to the roll chock with a fastener passed through the first liner plate in the rolling direction, and each of the second liner plate and the elastic member has an opening in which a head of the fastener is housed. (See claim 3 rejection) Regarding claim 5, JPS teaches a rolling method of rolling a material using the rolling mill according to claim 1. JPS is silent to a cold rolling method comprising a step of cold- rolling a material. It would have been obvious to one having ordinary skill in the art at the time of filing to have used cold rolling method between cold or hot rolling option. Also, since JPS is silent to a heating unit or furnace it would have been obvious to have used cold rolling option rather than hot. See MPEP 2143 Section I (E) "Obvious to try" – choosing from a finite number of identified, predictable solutions, with a reasonable expectation of success Regarding claim 6, JPS teaches a steel sheet manufacturing method comprising a step of manufacturing a sheet material as a material to be rolled, using the cold rolling method according to claim 5. JPS is silent to the sheet material being steel sheet. It would have been obvious to one having ordinary skill in the art at the time of filing to have used steel sheet since steel sheets are well known material to be rolled. See MPEP 2143 Section I (E) "Obvious to try" – choosing from a finite number of identified, predictable solutions, with a reasonable expectation of success Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to BOBBY YEONJIN KIM whose telephone number is (571)272-1866. The examiner can normally be reached M-F 9 am - 5 pm. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Christopher Templeton can be reached on (571) 270-1477. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /BOBBY YEONJIN KIM/Examiner, Art Unit 3725
Read full office action

Prosecution Timeline

Oct 02, 2024
Application Filed
Jul 27, 2026
Examiner Interview (Telephonic)
Jul 30, 2026
Non-Final Rejection mailed — §103 (current)

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
77%
Grant Probability
98%
With Interview (+21.6%)
2y 9m (~10m remaining)
Median Time to Grant
Low
PTA Risk
Based on 408 resolved cases by this examiner. Grant probability derived from career allowance rate.

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