Prosecution Insights
Last updated: October 01, 2026
Application No. 18/771,815

SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING SAME

Non-Final OA §102
Filed
Jul 12, 2024
Priority
Aug 27, 2021 — continuation of 12/100,732
Examiner
HO, TU TU V
Art Unit
2818
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Taiwan Semiconductor Manufacturing Company, Ltd.
OA Round
1 (Non-Final)
94%
Grant Probability
Favorable
1-2
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 94% — above average
94%
Career Allowance Rate
1277 granted / 1365 resolved
+25.6% vs TC avg
Moderate +5% lift
Without
With
+5.2%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 8m
Avg Prosecution
30 currently pending
Career history
1375
Total Applications
across all art units

Statute-Specific Performance

§101
0.7%
-39.3% vs TC avg
§103
39.8%
-0.2% vs TC avg
§102
48.1%
+8.1% vs TC avg
§112
3.5%
-36.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1365 resolved cases

Office Action

§102
DETAILED ACTION Notice of Pre-AIA or AIA Status 1. The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . 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 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. Claim Objections 2. Claims 8 and 18 are objected to because of the following informalities: in each of claims 8 and 18, “the first side of the first side of the substrate” should be changed to “the first side of the substrate” for readability. Claim Rejections - 35 USC § 102 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. 3. Claims 1, 7 and 17 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Sarig et al. U.S. Patent Application Publication 2004/0036363 A1 (the ‘363 reference). The reference discloses in Figs. 4-5 and related text a semiconductor device as claimed. Referring to claim 1, the ‘363 reference discloses a semiconductor device comprising: a semiconductor substrate (401, para [27] (paragraph(s) [0027])) having a first protected circuit (P0, para ]27]); a first guard ring (440, para [29]); and a second guard ring (420/430, para [28]) adjacent to the first guard ring (440) and around the first protected circuit (P0), wherein the second guard ring (420/430) includes: a first via tower (left via tower 420) configured to provide a first reference voltage (VDD, para [28]); a second via tower (430) configured to provide a second reference voltage (GND, para [28]) different than the first reference voltage (the VDD); and at least a third via tower (right via tower 420) configured to provide the first reference voltage (the VDD). Referring to claim 7 and using the same reference characters, interpretations, and citations as detailed above for claim 1 where applicable, the reference discloses an integrated circuit (IC) device comprising: a substrate (440); a first protected circuit (P0) on a first side of the substrate; and a guard ring (420/430) around the first protected circuit, the guard ring including: a first via tower (left via tower 420) on the first side of the substrate and configured to provide a first reference voltage (VDD); a second via tower (430) on the first side of the substrate and configured to provide a second reference voltage (GND) different than the first reference voltage; and a third via tower (right via tower 420) on the first side of the substrate and configured to provide the first reference voltage (the VDD). Referring to claim 17 and using the same reference characters, interpretations, and citations as detailed above for claims 1 and 7 where applicable, the reference discloses a method of fabricating a semiconductor device, the method comprising: forming a first protected circuit (P0) on a first side of a semiconductor substrate (440); and forming a guard ring (420/430) around the first protected circuit, the forming a guard ring including: forming a first via tower (left via tower 420) on the first side of the semiconductor substrate and configured to provide a first reference voltage; forming a second via tower (430) on the first side of the semiconductor substrate and configured to provide a second reference voltage (GND) different than the first reference voltage; and forming a third via tower (right via tower 420) on the first side of the semiconductor substrate (440) and configured to provide the first reference voltage (the VDD). Allowable Subject Matter 4. Claims 2-6, 8-16 and 18-20 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. The following is an examiner’s statement of reasons for the indication of allowable subject matter: The cited art, whether taken singularly or in combination, especially when all limitations are considered within the claimed specific combination, fails to teach or render obvious a semiconductor device, an integrated circuit (IC) device and a method of fabricating a semiconductor device with all exclusive limitations as recited in claims 2, 4, 5, 6, 8, 11, 12, 15, 18 and 20, which may be characterized (claim 2) in that a buried power grid (BPG) is beneath the semiconductor substrate and in that the second guard ring includes at least a portion of the BPG, (claim 8) a buried power grid (BPG) is on a second side of the substrate, and in that the guard ring includes at least a portion of the BPG, (claim 18) in forming a buried power grid (BPG) on a second side of the semiconductor substrate, and in that the guard ring is formed to include at least a portion of the BPG, (claim 4) the fourth via tower is aligned with the first via tower along a direction normal to the semiconductor substrate, (claims 5 and 11) in that the first via tower forms at least a portion of the non-BPG, (claim 6) in that the second protected circuit includes a transistor driver array, (claim 12) the sixth via tower is between the fourth via tower and the fifth via tower relative to a second direction, (claim 15) the seventh via tower is between the fourth via tower and the fifth via tower relative to a second direction, and in that the fourth via tower is aligned with the seventh via tower along the first direction, and (claim 20) the fourth via tower and the seventh via tower are configured to provide an input/output signal. Conclusion 5. Any inquiry concerning this communication or earlier communications from the examiner should be directed to TU TU V HO whose telephone number is (571)272-1778. The examiner can normally be reached on Monday to Thursday 6:30 - 15:00, Monday through Thursday. 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 W Natalini can be reached on 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 an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. 08-18-2026 /TU-TU V HO/Primary Examiner, Art Unit 2818
Read full office action

Prosecution Timeline

Jul 12, 2024
Application Filed
Aug 20, 2026
Non-Final Rejection mailed — §102 (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
94%
Grant Probability
99%
With Interview (+5.2%)
1y 8m (~0m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1365 resolved cases by this examiner. Grant probability derived from career allowance rate.

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