Prosecution Insights
Last updated: July 17, 2026
Application No. 18/041,830

BORON NITRIDE PARTICLES, METHOD FOR PRODUCING BORON NITRIDE PARTICLES, RESIN COMPOSITION, AND METHOD FOR PRODUCING RESIN COMPOSITION

Non-Final OA §103
Filed
Feb 16, 2023
Priority
Aug 20, 2020 — JP 2020-139471 +1 more
Examiner
FERRE, ALEXANDRE F
Art Unit
1788
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Denka Company Limited
OA Round
2 (Non-Final)
59%
Grant Probability
Moderate
2-3
OA Rounds
0m
Est. Remaining
79%
With Interview

Examiner Intelligence

Grants 59% of resolved cases
59%
Career Allowance Rate
426 granted / 719 resolved
-5.8% vs TC avg
Strong +20% interview lift
Without
With
+19.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
50 currently pending
Career history
770
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
90.4%
+50.4% vs TC avg
§102
5.1%
-34.9% vs TC avg
§112
0.9%
-39.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 719 resolved cases

Office Action

§103
RESPONSE TO AMENDMENT 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 . WITHDRAWN REJECTIONS The double patenting rejections of the claims made of record in the office action mailed on 11/26/2025 have been withdrawn due to Applicant’s terminal disclaimer filed on 03/05/2026. The 35 U.S.C. §102 rejections of the claims made of record in the office action mailed on 11/26/2025 have been withdrawn due to Applicant’s response filed on 02/10/2026. Second Non-Final The new grounds of rejection in this office action were not necessitated by amendment. As such, the current office action is a non-final rejection. REJECTIONS The text of those sections of Title 35, U.S. Code not included in this action can be found in a prior Office action. Claim Rejections - 35 USC § 103 Claims 3-4 and 9-10 are rejected under 35 U.S.C. 103 as being unpatentable over Liu et al. (U.S. App. Pub. No. 2019/0276310) (cited in the IDS filed on 03/07/2023). Regarding claims 3-4 and 9-10, Liu et al. teaches a method of making a hexagonal boron nitride involving a carbon templating material (Abstract) wherein the morphology of the hexagonal boron nitride material is based on the carbon templating material including fibers and nanotubes. (par. [0037]). The fibers are hollow (i.e. define a central space surrounded by the boron nitride material) (par. [0014]) and have diameters of 10 nanometers to 50 micrometers with ratios of length to diameter of 2 or more (par. [0018]), which would include diameter lengths of 80 or more, 125 or more and 150 or more overlapping with the presently claimed range. As set forth in MPEP 2144.05, in the case where the claimed range “overlap or lie inside ranges disclosed by the prior art”, a prima facie case of obviousness exists, In re Wertheim, 541 F.2d 257, 191 USPQ 90 (CCPA 1976); In re Woodruff, 919 F.2d 1575, 16 USPQ2d 1934 (Fed. Cir. 1990). ANSWERS TO APPLICANT’S ARGUMENTS Applicant’s arguments in the response filed 02/10/2026 regarding the rejections made of record in the office action mailed on 11/26/2025 have been considered but are moot due to the new grounds of rejection. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ALEXANDRE F FERRE whose telephone number is (571)270-5763. The examiner can normally be reached M-F: 8 am to 4 pm ET. 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, Alicia Chevalier can be reached at 5712721490. 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. /ALEXANDRE F FERRE/Primary Examiner, Art Unit 1788 06/25/2026
Read full office action

Prosecution Timeline

Feb 16, 2023
Application Filed
Nov 26, 2025
Non-Final Rejection mailed — §103
Feb 10, 2026
Response Filed
Jun 29, 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

2-3
Expected OA Rounds
59%
Grant Probability
79%
With Interview (+19.9%)
3y 1m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 719 resolved cases by this examiner. Grant probability derived from career allowance rate.

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