Prosecution Insights
Last updated: April 19, 2026
Application No. 18/263,245

cBN SINTERED COMPACT

Non-Final OA §112
Filed
Jul 27, 2023
Examiner
MILLER, CAMERON KENNETH
Art Unit
1731
Tech Center
1700 — Chemical & Materials Engineering
Assignee
Mitsubishi Materials Corporation
OA Round
1 (Non-Final)
80%
Grant Probability
Favorable
1-2
OA Rounds
2y 9m
To Grant
80%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allow Rate
258 granted / 321 resolved
+15.4% vs TC avg
Minimal -0% lift
Without
With
+-0.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
65 currently pending
Career history
386
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
47.7%
+7.7% vs TC avg
§102
19.8%
-20.2% vs TC avg
§112
22.2%
-17.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 321 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 . Drawings The drawings are objected to under 37 CFR 1.83(a) because they fail to show labels or identification of overlap areas as described in the specification. Any structural detail that is essential for a proper understanding of the disclosed invention should be shown in the drawing. MPEP § 608.02(d). Corrected drawing sheets in compliance with 37 CFR 1.121(d) are required in reply to the Office action to avoid abandonment of the application. Any amended replacement drawing sheet should include all of the figures appearing on the immediate prior version of the sheet, even if only one figure is being amended. The figure or figure number of an amended drawing should not be labeled as “amended.” If a drawing figure is to be canceled, the appropriate figure must be removed from the replacement sheet, and where necessary, the remaining figures must be renumbered and appropriate changes made to the brief description of the several views of the drawings for consistency. Additional replacement sheets may be necessary to show the renumbering of the remaining figures. Each drawing sheet submitted after the filing date of an application must be labeled in the top margin as either “Replacement Sheet” or “New Sheet” pursuant to 37 CFR 1.121(d). If the changes are not accepted by the examiner, the applicant will be notified and informed of any required corrective action in the next Office action. The objection to the drawings will not be held in abeyance. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claim 1 is rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Claim 1 recites the limitation "the intensity" twice at line 13. There is insufficient antecedent basis for this limitation in the claim. Claim 1 recites the limitation "the ratio" in line 16. There is insufficient antecedent basis for this limitation in the claim. Claim 1 recites the limitation "the average area" twice, once at lines 15-16 and once at line 18. There is insufficient antecedent basis for this limitation in the claim. Claim 1 recites the limitation "the portions" twice, once at line 17 and once at line 18. There is insufficient antecedent basis for this limitation in the claim. Additionally, claim 1 section 3 lines 15-18 is unclear because the limitations “the average area of the portions where Ti, Al, and at least one selected from the group consisting of Si, Mg, and Zn overlap” as well as the limitation “the average area of the portions where Ti and Al overlap” are unclear. It is unclear how this Auger electron spectroscopy overlap is determined; for example, if this overlap is measured at a depth of 1 nm, the result will be significantly different from a measurement at a depth of 1 µm. The instant specification does not appear to provide a detailed method describing the performance of the Auger electron spectroscopy measurement. As such, the meaning of these limitations are unclear. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. While not used to form the basis of a rejection, Examiner notes the closest prior art is US20190111495 to Maekawa et al, hereinafter referred to as Maekawa. Maekawa is directed towards a surface-coated cubic boron nitride sintered material tool including a cBN substrate (see Maekawa at the Abstract). Maekawa discloses a component comprising TiN, TiCN, WC, AlN, TiB2, and Al2O3 (see Maekawa at Table 2, Example 5). While Maekawa discloses a Ti-Al alloy at [0090], Maekawa does not disclose a binder comprising Ti-Al because Maekawa discloses the Ti-Al alloy forming a cathode electrode. Additionally, Maekawa does not disclose or make obvious the binder further comprising Si, Mg, Zn, the claimed ITi2CN/ITiAl ratio, and the claimed STiAlM/STiAl ratio. As such, Maekawa does not disclose or make obvious the subject matter of instant claim 1. Any inquiry concerning this communication or earlier communications from the examiner should be directed to CAMERON K MILLER whose telephone number is (571)272-4616. The examiner can normally be reached M-F 8:00am - 5:00pm EST. 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, Amber Orlando can be reached at (571) 270-3149. 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. CAMERON K MILLER Examiner Art Unit 1731 /CAMERON K MILLER/Examiner, Art Unit 1731
Read full office action

Prosecution Timeline

Jul 27, 2023
Application Filed
Feb 23, 2026
Non-Final Rejection — §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12600674
ALUMINA PARTICLES, RESIN COMPOSITION, MOLDED BODY, AND METHOD FOR PRODUCING ALUMINA PARTICLES
2y 5m to grant Granted Apr 14, 2026
Patent 12600664
GLASS-CERAMICS WITH HIGH ELASTIC MODULUS AND HARDNESS
2y 5m to grant Granted Apr 14, 2026
Patent 12594223
GRADIENT COMPOSITION ZIRCONIA DENTAL MATERIALS
2y 5m to grant Granted Apr 07, 2026
Patent 12590039
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2y 5m to grant Granted Mar 31, 2026
Patent 12583784
Li2O-Al2O3-SiO2-BASED CRYSTALLIZED GLASS
2y 5m to grant Granted Mar 24, 2026
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
80%
Grant Probability
80%
With Interview (-0.3%)
2y 9m
Median Time to Grant
Low
PTA Risk
Based on 321 resolved cases by this examiner. Grant probability derived from career allow rate.

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