Prosecution Insights
Last updated: April 19, 2026
Application No. 18/743,247

PLURALITY OF FLAKY MAGNETIC METAL PARTICLES, PRESSED POWDER MATERIAL, AND ROTATING ELECTRIC MACHINE

Final Rejection §112
Filed
Jun 14, 2024
Examiner
LIANG, ANTHONY M
Art Unit
1734
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Kabushiki Kaisha Toshiba
OA Round
2 (Final)
83%
Grant Probability
Favorable
3-4
OA Rounds
2y 11m
To Grant
93%
With Interview

Examiner Intelligence

Grants 83% — above average
83%
Career Allow Rate
548 granted / 659 resolved
+18.2% vs TC avg
Moderate +10% lift
Without
With
+9.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
37 currently pending
Career history
696
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
44.0%
+4.0% vs TC avg
§102
7.6%
-32.4% vs TC avg
§112
33.9%
-6.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 659 resolved cases

Office Action

§112
DETAILED ACTION 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 . Claim Rejections - 35 USC § 112 The following is a quotation of the first paragraph of 35 U.S.C. 112(a): (a) IN GENERAL.—The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor or joint inventor of carrying out the invention. The following is a quotation of the first paragraph of pre-AIA 35 U.S.C. 112: The specification shall contain a written description of the invention, and of the manner and process of making and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art to which it pertains, or with which it is most nearly connected, to make and use the same, and shall set forth the best mode contemplated by the inventor of carrying out his invention. Claims 1-2, 4-7, and 9 are rejected under 35 U.S.C. 112(a) or 35 U.S.C. 112 (pre-AIA ), first paragraph, as failing to comply with the written description requirement. The claim(s) contains subject matter which was not described in the specification in such a way as to reasonably convey to one skilled in the relevant art that the inventor or a joint inventor, or for applications subject to pre-AIA 35 U.S.C. 112, the inventor(s), at the time the application was filed, had possession of the claimed invention. Claim 1 recites “at least one first element selected from the group consisting of iron (Fe), cobalt (Co), and nickel (Ni), and additive elements, the additive elements, the additive elements including boron (B) and hafnium (Hf), the additive elements being included in a total amount of from 0.002 at% to 80 at% with respect to the total amount of magnetic metal phase, and has an average crystal grain size of 1 µm or more,” which is not described in the specification. The specification does not disclose an average grain size of 1 µm or more for the embodiment wherein the magnetic metal phase contains “at least one first element selected from the group consisting of iron (Fe), cobalt (Co), and nickel (Ni), and additive elements, the additive elements, the additive elements including boron (B) and hafnium (Hf), the additive elements being included in a total amount of from 0.002 at% to 80 at% with respect to the total amount of magnetic metal phase.” Rather, for this embodiment, the specification discloses an average crystal grain size of 100 nm or less (instant specification [0056]-[0060]). Claims 2, 4-7, and 9 are rejected due to dependence upon claim 1. The following is a quotation of 35 U.S.C. 112(d): (d) REFERENCE IN DEPENDENT FORMS.—Subject to subsection (e), a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. The following is a quotation of pre-AIA 35 U.S.C. 112, fourth paragraph: Subject to the following paragraph [i.e., the fifth paragraph of pre-AIA 35 U.S.C. 112], a claim in dependent form shall contain a reference to a claim previously set forth and then specify a further limitation of the subject matter claimed. A claim in dependent form shall be construed to incorporate by reference all the limitations of the claim to which it refers. Claims 4-5 and 6-7 are rejected under 35 U.S.C. 112(d) or pre-AIA 35 U.S.C. 112, 4th paragraph, as being of improper dependent form for failing to further limit the subject matter of the claim upon which it depends, or for failing to include all the limitations of the claim upon which it depends. Claims 4 and 5 recite “has an average grain size of 100 nm or less,” which fails to include all of the limitations of independent claim 1, which recites “an average grain size of 1 µm or more.” The average grain size cannot be both 100 nm or less and 1 µm (i.e., 1000 nm) or more. Examiner recommends amending claim 1 to recite “has an average grain size of 100 nm or less”. Claims 6-7 are rejected due to dependence upon claim 5. Applicant may cancel the claim(s), amend the claim(s) to place the claim(s) in proper dependent form, rewrite the claim(s) in independent form, or present a sufficient showing that the dependent claim(s) complies with the statutory requirements. Response to Arguments Applicant's arguments filed 2/3/2026 with respect to the prior rejections are persuasive in view of the current amendments to the claims. However, the pending claims are rejected due to new issues which arose from the current amendments, as detailed 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 nonprovisional extension fee (37 CFR 1.17(a)) 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 mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to ANTHONY M LIANG whose telephone number is (571)272-0483. The examiner can normally be reached M-F: 9:00am-5:00pm. 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 Johnson can be reached at (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 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. /ANTHONY M LIANG/Primary Examiner, Art Unit 1734
Read full office action

Prosecution Timeline

Jun 14, 2024
Application Filed
Aug 28, 2024
Response after Non-Final Action
Nov 01, 2025
Non-Final Rejection — §112
Jan 14, 2026
Examiner Interview Summary
Jan 14, 2026
Applicant Interview (Telephonic)
Feb 03, 2026
Response Filed
Feb 26, 2026
Final Rejection — §112
Apr 16, 2026
Examiner Interview Summary
Apr 16, 2026
Applicant Interview (Telephonic)

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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
83%
Grant Probability
93%
With Interview (+9.9%)
2y 11m
Median Time to Grant
Moderate
PTA Risk
Based on 659 resolved cases by this examiner. Grant probability derived from career allow rate.

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