Prosecution Insights
Last updated: April 19, 2026
Application No. 19/351,167

3D SEMICONDUCTOR DEVICES AND STRUCTURES WITH TRANSISTORS, METAL LAYERS, AND SINGLE CRYSTAL TRANSISTOR CHANNELS

Non-Final OA §112
Filed
Oct 06, 2025
Examiner
KEBEDE, BROOK
Art Unit
2818
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Monolithic 3D Inc.
OA Round
1 (Non-Final)
89%
Grant Probability
Favorable
1-2
OA Rounds
2y 3m
To Grant
93%
With Interview

Examiner Intelligence

Grants 89% — above average
89%
Career Allow Rate
887 granted / 1000 resolved
+20.7% vs TC avg
Minimal +4% lift
Without
With
+4.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
28 currently pending
Career history
1028
Total Applications
across all art units

Statute-Specific Performance

§101
1.6%
-38.4% vs TC avg
§103
33.9%
-6.1% vs TC avg
§102
31.0%
-9.0% vs TC avg
§112
11.6%
-28.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1000 resolved cases

Office Action

§112
DETAILED ACTION 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 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. Claims 7, 14 and 20 are 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 7 recites the limitation “wherein said via has a diameter of less than 400 nm and greater than 5 nm” in line 2. Claim 14 recites the limitation “wherein said via has a diameter of less than 400 nm and greater than 5 nm” in line 2. Claim 20 recites the limitation “wherein said via has a diameter of less than 400 nm and greater than 5 nm” in line 2. However, there is lack of proper antecedent basis for “said via” in the claims. Changing dependency of claim 7 from claim 1 to claim 2; dependency of claim 14 from claim 8 to claim 9; and dependency of claim 20 from claim 15 to claim 16 consecutively may provide proper antecedent basis. Allowable Subject Matter Claims 1-6, 8-13 and 15-19 are allowed over prior art of record. The following is a statement of reasons for the indication of allowable subject matter: Prior art of record neither anticipates nor renders obvious the claimed subject matter of the instant application as a whole either taken alone or in combination, in particular, prior art of record does not teach “wherein said second level is overlaid by a first isolation layer; and a connective path from said plurality of transistors to said plurality of first metal layers,” as recited in claims 1, 8 and 15 respectively. Claims 2-6, 9-13 and 16-19 are also allowed as being directly dependent of the allowed independent base claim. Claims 7, 14 and 12 would be allowable if rewritten or amended to overcome the rejection(s) under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), 2nd paragraph, set forth in this Office action. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure Atwood et al. (US 2003/0227041), Yu et al. (US 2008/0124845) and Lee (US 2009/0325343) also disclose 3D semiconductor device. Correspondence Any inquiry concerning this communication or earlier communications from the examiner should be directed to BROOK KEBEDE whose telephone number is 571-272-1862. The examiner can normally be reached Monday Friday 8:00 AM 5:00 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, Jeff Natalini can be reached at 571-272-2266. 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. /BROOK KEBEDE/ Primary Examiner, Art Unit 2894 /BK/ February 7, 2026
Read full office action

Prosecution Timeline

Oct 06, 2025
Application Filed
Feb 07, 2026
Non-Final Rejection — §112 (current)

Precedent Cases

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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
89%
Grant Probability
93%
With Interview (+4.3%)
2y 3m
Median Time to Grant
Low
PTA Risk
Based on 1000 resolved cases by this examiner. Grant probability derived from career allow rate.

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