Prosecution Insights
Last updated: October 19, 2026
Application No. 18/597,762

SYMMETRICAL 3D BIPOLAR NANOSHEET TRANSISTOR

Non-Final OA §102
Filed
Mar 06, 2024
Priority
Sep 20, 2023 — provisional 63/539,576
Examiner
BOWEN, ADAM S
Art Unit
2897
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Tokyo Electron Limited
OA Round
1 (Non-Final)
96%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 96% — above average
96%
Career Allowance Rate
722 granted / 748 resolved
+28.5% vs TC avg
Minimal +2% lift
Without
With
+2.3%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 9m
Avg Prosecution
23 currently pending
Career history
771
Total Applications
across all art units

Statute-Specific Performance

§101
2.5%
-37.5% vs TC avg
§103
46.4%
+6.4% vs TC avg
§102
34.3%
-5.7% vs TC avg
§112
5.7%
-34.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 748 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 . Election/Restrictions Applicant’s election without traverse of Group I, claims 1-17 in the reply filed on 07/28/2026 is acknowledged. Information Disclosure Statement The information disclosure statement (IDS) submitted on 07/28/2026 was filed before the first action on the merits. The submission is in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement is being considered by the examiner. 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) 1-3 and 7-9 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Wang et al. (2023/0071998). Re claim 1, Wang teaches a semiconductor device (Figs. 1-15), comprising: a first semiconductor structure (12) including a lower portion (Fig. 15) and an upper portion (Fig. 15), wherein the first semiconductor structure (12) has a first conductive type ([17], p-type); a second semiconductor structure (28) in contact with the lower portion of the first semiconductor structure (12), wherein the second semiconductor structure (28) has a second conductive type ([23], n-type) opposite to the first conductive type (p-type); and a third semiconductor structure (30) in contact with the lower portion of the first semiconductor structure (12), wherein the third semiconductor structure (30) has the second conductive type ([23], n-type), wherein the second semiconductor structure (28) and the third semiconductor structure (30) laterally extend toward opposite directions (Fig. 15). Re claim 2, Wang teaches the semiconductor device of claim 1, further comprising: a first metal structure (40) in electrical contact with the second semiconductor structure (28); and a second metal structure (40) in electrical contact with the third semiconductor structure (30). Re claim 3, Wang teaches the semiconductor device of claim 2, wherein the first semiconductor structure (12) is laterally interposed (Fig. 15) between the first and second metal structures (40), but is electrically isolated (32) from each of the first and second metal structures (40). Re claim 7, Wang teaches the semiconductor device of claim 2, further comprising: a first contact electrode (36) vertically extending to contact the upper portion of the first semiconductor structure (12); a second contact electrode (42) vertically extending to contact the first metal structure (40); and a third contact electrode (42) vertically extending to contact the second metal structure (40). Re claim 8, Wang teaches the semiconductor device of claim 1, wherein the first semiconductor structure (12), the second semiconductor structure (28), and the third semiconductor structure (30) operatively serve as a base, a collector, and an emitter of a bipolar junction transistor, respectively [34]. Re claim 9, Wang teaches the semiconductor device of claim 1, wherein the first semiconductor structure (12), the second semiconductor structure (28), and the third semiconductor structure (30) are each an epitaxially grown semiconductor structure [17, 23]. Claim(s) 10-15 and 17 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Wang et al. (2023/0071998). Re claim 10, Wang teaches a semiconductor device (Figs. 1-15), comprising: a first semiconductor structure (12) having a first conductive type ([17], p-type), the first semiconductor structure (12) comprising an upper portion and a lower portion (Fig. 15); a second semiconductor structure (28) having a second conductive type ([23], n-type) opposite to the first conductive type (p-type); a third semiconductor structure (30) having the second conductive type ([23], n-type), wherein the lower portion of the first semiconductor structure (12) is disposed between the second semiconductor structure (28) and the third semiconductor structure (30) and is in electrical contact (Fig. 15) with the second semiconductor structure (28) and the third semiconductor structure (30). Re claim 11, Wang teaches the semiconductor device of claim 10, further comprising: a first metal structure (40) in electrical contact with the second semiconductor structure (28); and a second metal structure (40) in electrical contact with the third semiconductor structure (30). Re claim 12, Wang teaches the semiconductor device of claim 11, wherein the second semiconductor structure (28) and the third semiconductor structure (30) physically isolate (Fig. 15) the lower portion of the first semiconductor structure (12) from the first metal structure (40) and the second metal structure (40). Re claim 13, Wang teaches the semiconductor device of claim 11, further comprising: a first dielectric structure (32) disposed between the upper portion of the first semiconductor structure (12) and the first metal structure (40); and a second dielectric structure (32) disposed between the upper portion of the first semiconductor structure (12) and the second metal structure (40). Re claim 14, Wang teaches the semiconductor device of claim 11, wherein the first dielectric structure (32) and the second dielectric structure (32) physically isolate (Fig. 15) the upper portion of the first semiconductor structure (12) from the first metal structure (40) and the second metal structure (40). Re claim 15, Wang teaches the semiconductor device of claim 11, further comprising: a first contact electrode (36) vertically extending to contact the upper portion of the first semiconductor structure (12); a second contact electrode (42) vertically extending to contact the first metal structure (40); and a third contact electrode (42) vertically extending to contact the second metal structure (40). Re claim 17, Wang teaches the semiconductor device of claim 10, wherein the first semiconductor structure (12), the second semiconductor structure (28), and the third semiconductor structure (30) are each an epitaxially grown semiconductor structure [14, 23]. Allowable Subject Matter Claims 4-6 and 16 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Re claim 4, Wang teaches the semiconductor device of claim 3, yet remains explicitly silent to further comprising: a first dielectric structure extending along a first sidewall of the upper portion of the first semiconductor structure to electrically isolate the first semiconductor structure from the first metal structure; and a second dielectric structure extending along a second sidewall of the upper portion of the first semiconductor structure to electrically isolate the first semiconductor structure from the second metal structure. Re claim 5, Wang teaches the semiconductor device of claim 2, yet remains explicitly silent to wherein the first metal structure is in contact with a top surface, a bottom surface, and a first sidewall of the second semiconductor structure; and the second metal structure is in contact with a top surface, a bottom surface, and a first sidewall of the third semiconductor structure. Claim 6 is objected to for at least depending from objected claim 5. Re claim 16, Wang teaches the semiconductor device of claim 10, yet remains explicitly silent to wherein a lateral dimension of the lower portion of the first semiconductor structure is greater than a lateral dimension of the upper portion of the first semiconductor structure. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to ADAM S BOWEN whose telephone number is (571)272-3984. The examiner can normally be reached M-F 9-5. 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, Fernando Toledo can be reached at 571-272-1867. 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. /FERNANDO L TOLEDO/Supervisory Patent Examiner, Art Unit 2897 /ADAM S BOWEN/Examiner, Art Unit 2897
Read full office action

Prosecution Timeline

Mar 06, 2024
Application Filed
Oct 02, 2026
Non-Final Rejection mailed — §102
Oct 15, 2026
Response Filed

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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
96%
Grant Probability
99%
With Interview (+2.3%)
1y 9m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 748 resolved cases by this examiner. Grant probability derived from career allowance rate.

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