Prosecution Insights
Last updated: September 17, 2026
Application No. 18/567,590

STOPPER FOR CONTINUOUS CASTING

Final Rejection §103§DP
Filed
Dec 06, 2023
Priority
Jun 10, 2021 — JP 2021-097589 +1 more
Examiner
YANG, JIE
Art Unit
1734
Tech Center
1700 — Chemical & Materials Engineering
Assignee
KROSAKIHARIMA Corporation
OA Round
2 (Final)
62%
Grant Probability
Moderate
3-4
OA Rounds
8m
Est. Remaining
82%
With Interview

Examiner Intelligence

Grants 62% of resolved cases
62%
Career Allowance Rate
787 granted / 1259 resolved
-2.5% vs TC avg
Strong +19% interview lift
Without
With
+19.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 5m
Avg Prosecution
63 currently pending
Career history
1311
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
54.1%
+14.1% vs TC avg
§102
12.4%
-27.6% vs TC avg
§112
16.0%
-24.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1259 resolved cases

Office Action

§103 §DP
Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . DETAILED ACTION Claim 2 have been amended, claim 6 is added as a new claim; Claims 1-6 remain for examination, wherein claim 1 is an independent claim. Previous claim Objections/Rejections Previous objection of Claim 2 because informalities has been withdrawn in view of the Applicant’s “Arguments/Remarks with amendment” filed on 6/18/2026. Previous rejection of Claims 1-5 are rejected under 35 U.S.C. 103 as being unpatentable over Fishler et al (US 4,791,978, listed in IDS filed on 12/07/2023, thereafter US’978) in view of Hanse et al (US 5,691,061, listed in IDS filed on 12/07/2023, thereafter US’061) has been withdrawn in view of the Applicant’s “Arguments/Remarks with amendment” filed on 6/18/2026. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory obviousness-type double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); and In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on a nonstatutory double patenting ground provided the conflicting application or patent either is shown to be commonly owned with this application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. Effective January 1, 1994, a registered attorney or agent of record may sign a terminal disclaimer. A terminal disclaimer signed by the assignee must fully comply with 37 CFR 3.73(b). Claims 1-6 are rejected on the ground of non-statutory obviousness type double patenting as being unpatentable over claims 1-5 of co-pending application No. 17/417461 (US 12,023,730 B2). Claims 1-5 of co-pending application No. 17/417461 (US 12,023,730 B2) is applied to the claims 1-5 for the same reason as stated in the previous office action dated 3/23/2026. Regarding claim 6, Figs.1-3 and claims of co-pending application No. 17/417461 (US 12,023,730 B2) teach the gas pas path with sit-shaped gas pool as claimed in the instant claim. Thus, no patentable distinction was found in the instant claims compared with the manufacturing process a grain-oriented electrical steel sheet as disclosed by Claims 1-5 of co-pending application No. 17/417461 (US 12,023,730 B2). Claims 1-6 are rejected on the ground of non-statutory obviousness type double patenting as being unpatentable over claims 1-11 of co-pending application No. 17/431214 (US 11,745,257 B2). Claims 1-11 of co-pending application No. 17/431214 (US 11,745,257 B2) is applied to the claims 1-5 for the same reason as stated in the previous office action dated 3/23/2026. Regarding claim 6, Figs.1-5 and Claims 1-11 of co-pending application No. 17/431214 (US 11,745,257 B2) teach the gas pas path with sit-shaped gas pool as claimed in the instant claim. Thus, no patentable distinction was found in the instant claims compared with the manufacturing process a grain-oriented electrical steel sheet as disclosed by Claims 1-11 of co-pending application No. 17/431214 (US 11,745,257 B2). Notes: Morikawa et al (US-PG-pub 2016/0297003 A1) is cited as a reference only. Response to Arguments Applicant’s arguments to the art rejection to Claims 1-6 have been rejected as stated above. Proper “Terminal Disclaimer” can overcome ethe ODP rejections as stated above. Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any extension fee pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to JIE YANG whose telephone number is (571)270-1884. The examiner can normally be reached on IFP. 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, Jonathan J Johnson can be reached on 571-272-1177. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /JIE YANG/Primary Examiner, Art Unit 1734
Read full office action

Prosecution Timeline

Dec 06, 2023
Application Filed
Mar 23, 2026
Non-Final Rejection mailed — §103, §DP
Jun 18, 2026
Response Filed
Aug 05, 2026
Final Rejection mailed — §103, §DP (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12723297
HOT WORK TOOL STEEL AND HOT WORK TOOL
3y 3m to grant Granted Sep 01, 2026
Patent 12715026
PROCESSING METHOD FOR ELECTRONIC/ELECTRIC DEVICE COMPONENT WASTE
6y 0m to grant Granted Aug 25, 2026
Patent 12716114
HOT-DIP PLATED STEEL MATERIAL
2y 10m to grant Granted Aug 25, 2026
Patent 12703895
IMPROVEMENTS IN AND RELATING TO PROCESSING METHODS AND PROCESSING APPARATUS
7y 2m to grant Granted Aug 11, 2026
Patent 12692581
TIRE CORD STEEL WITH HIGH STRENGTH AND LOW WIRE BREAKAGE RATE, AND ROLLING METHOD AND USE THEREOF
2y 10m to grant Granted Jul 28, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
62%
Grant Probability
82%
With Interview (+19.4%)
3y 5m (~8m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1259 resolved cases by this examiner. Grant probability derived from career allowance rate.

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