Prosecution Insights
Last updated: April 19, 2026
Application No. 18/464,235

SILICON-CONTAINING ALUMINUM NITRIDE PARTICLES, METHOD FOR PRODUCING SAME, AND LIGHT EMITTING DEVICE

Non-Final OA §102
Filed
Sep 10, 2023
Examiner
GREGORIO, GUINEVER S
Art Unit
1732
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Nichia Corporation
OA Round
1 (Non-Final)
73%
Grant Probability
Favorable
1-2
OA Rounds
3y 4m
To Grant
91%
With Interview

Examiner Intelligence

Grants 73% — above average
73%
Career Allow Rate
600 granted / 825 resolved
+7.7% vs TC avg
Strong +18% interview lift
Without
With
+18.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
28 currently pending
Career history
853
Total Applications
across all art units

Statute-Specific Performance

§101
0.6%
-39.4% vs TC avg
§103
57.7%
+17.7% vs TC avg
§102
9.7%
-30.3% vs TC avg
§112
20.0%
-20.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 825 resolved cases

Office Action

§102
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 § 102 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claim(s) 1-5 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Sekiguchi et al. (Influence of Si on the particle growth of AlN ceramics; Applied Physics Express 7, 115503; 2014). Regarding claim 1, Sekiguchi et al. teaches AlN particle growth with Si doping and investigated the influence of Si-doping on the growth and luminescence of the AlN particles which meets the limitation of silicon-containing aluminum nitride particles (page 11503-1, paragraph 1). Sekiguchi et al. teaches AlN (Tokuyama Type E, particle size of 0.96–1.07µm) and α-Si3N4 (Ube Industries SN-E10, particle size of 0.5µm) were used as starting materials which meets the limitation providing a raw material mixture comprising aluminum nitride and silicon nitride (page 11503-1, paragraph 2). Sekiguchi et al. teaches Si concentrations of 2.4-4.0% which is encompassed by wherein an amount of the silicon nitride is in a range of 2% by mass or more and 10% by mass or less based on a total amount of the aluminum nitride and the silicon nitride in the raw material mixture as 100% by mass (page 11503-2, Fig. 2). Sekiguchi et al. teaches the raw powders were packed into boron nitride (BN) crucibles and then fired in a gas-pressure sintering furnace (Fujidempa Kogyo FVPHR-R-10, FRET-40) with a graphite heater at 1950°C for 2, 4, and 8h under a nitrogen gas pressure of 0.92MPa which meets the limitation subjecting the raw material mixture to a heat treatment at a pressure of 0.101 MPa or more and a temperature in a range of 1,700°C or more and 2,100°C or less (page 11503-1, paragraph 2). Regarding claim 2, Sekiguchi et al. teaches graphite heater at 1950°C for 2, 4, and 8h under a nitrogen gas pressure of 0.92MPa which meets the limitation wherein the heat treatment is subject in a nitrogen atmosphere (page 11503-1, paragraph 2). Regarding claim 3, Sekiguchi et al. teaches for 2, 4, and 8h which meets the limitation of wherein the retention time of the raw material mixture at the temperature of the heat treatment is in a range of 1 hour or more and 10 hours or less (page 11503-1, paragraph 2). Regarding claim 4, Sekiguchi et al. teaches nitrogen gas pressure of 0.92MPa which meets the limitation of comprising subjecting the raw material mixture to a heat treatment at a pressure in a range of more than 0.101 MPa and 1MPa or less (page 11503-1, paragraph 2). Regarding claim 5, Sekiguchi et al. teaches Si concentrations of 4.0% which meets the limitation of wherein an amount of the silicon nitride is in a range of 4% by mass or more and 8% by mass or less based on a total amount of the aluminum nitride and the silicon nitride in the raw material mixture as 100% by mass (page 11503-2, Fig. 2). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to GUINEVER S GREGORIO whose telephone number is (571)270-5827. The examiner can normally be reached M-W 11 am - 9 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, Coris Fung can be reached at 571-270-5713. 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. /GUINEVER S GREGORIO/Primary Examiner, Art Unit 1732 03/03/2026
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Prosecution Timeline

Sep 10, 2023
Application Filed
Mar 03, 2026
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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2y 5m to grant Granted Dec 30, 2025
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
73%
Grant Probability
91%
With Interview (+18.5%)
3y 4m
Median Time to Grant
Low
PTA Risk
Based on 825 resolved cases by this examiner. Grant probability derived from career allow rate.

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