Prosecution Insights
Last updated: October 01, 2026
Application No. 18/789,164

METAL FUSE STRUCTURE BY VIA LANDING

Non-Final OA §102§103
Filed
Jul 30, 2024
Priority
Aug 30, 2021 — divisional of 12/324,149
Examiner
HATFIELD, MARSHALL MU-NUO
Art Unit
Tech Center
Assignee
Taiwan Semiconductor Manufacturing Company, Ltd.
OA Round
1 (Non-Final)
93%
Grant Probability
Favorable
1-2
OA Rounds
1y 2m
Est. Remaining
97%
With Interview

Examiner Intelligence

Grants 93% — above average
93%
Career Allowance Rate
89 granted / 96 resolved
+32.7% vs TC avg
Minimal +4% lift
Without
With
+4.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 4m
Avg Prosecution
22 currently pending
Career history
106
Total Applications
across all art units

Statute-Specific Performance

§103
52.0%
+12.0% vs TC avg
§102
32.4%
-7.6% vs TC avg
§112
15.0%
-25.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 96 resolved cases

Office Action

§102 §103
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. (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. Claim(s) 1-6, 10-13, 17-20 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Liaw et al.(US 20140210043 A1, hereafter Wang). Regarding Claim 1, Wang discloses: A method of operating a semiconductor device(See Figs. 1-8) comprising: Receiving, through a first conductive structure(Fig. 1 [133]) electrically connected to a gate(Fig. 1 [110]) of a metal-oxide-semiconductor(MOS) device, a word line voltage(Fig. 1 [Word Line], See paragraph 0073); Receiving, through a second conductive structure(Fig. 1 [132]), a bit line voltage(See paragraph 0058) greater than a predetermined voltage(“sufficiently high”); and Creating a first channel(See paragraph 0058, a channel through Fig. 1 [136]) between the second conductive structure(Fig. 1 [134]) and a third conductive structure(Fig. 1 [114]) electrically coupled to one of a source or drain(Fig. 1 [108]) of the MOS device(Fig. 1 [106/108/110/116]). Regarding Claim 2, Wang further discloses: Receiving the bit line voltage(See above) through a first via structure(Fig. 1 [132]) disposed directly above the second conductive structure(Fig. 1 [134]). Regarding Claim 3, Wang further discloses: The first channel(See Fig. 1 [136]) is configured to be formed in a dielectric material to electrically short the second conductive structure(Fig. 1 [134]) and the third conductive structure(Fig. 1 [114]). Regarding Claim 4, Wang further discloses: The dielectric material(Fig. 1 [136]) is disposed over at least the third conductive structure(Fig. 1 [114]). Regarding Claim 5, Wang further discloses: The second(Fig. 1 [134]) and third conductive structures(Fig. 1 [114]) extend in a first direction(horizontally) and are spaced from each other in a second direction(downwards) perpendicular to the first direction. Regarding Claim 6, Wang further discloses: The first conductive structure(Fig. 1 [133]) extends in the second direction(downwards). Regarding Claim 10, Wang discloses: A method of operating a semiconductor device(Figs. 1-8) comprising: Receiving, through a first conductive structure(Fig. 1 [133]) electrically connected to a gate(Fig. 1 [110]) of a metal-oxide-semiconductor(MOS) device, a word line voltage(Fig. 1 [Word Line], See paragraph 0073); Receiving, through a second conductive structure(Fig. 1 [132]), a bit line voltage(See paragraph 0058) greater than a predetermined voltage(“sufficiently high”); and Creating a first channel(See paragraph 0058, a channel through Fig. 1 [136]) between the second conductive structure(Fig. 1 [134]) and a third conductive structure(Fig. 1 [114]) electrically coupled to one of a source or drain(Fig. 1 [108]) of the MOS device(Fig. 1 [106/108/110/116]), wherein the second(Fig. 1 [134]) and third conductive structures(Fig. 1 [114]) extend in a first direction(horizontally) and are spaced from each other in a second direction(downwards) perpendicular to the first direction. Regarding Claim 11, Wang further discloses: Receiving the bit line voltage(See above) through a first via structure(Fig. 1 [132]) disposed directly above the second conductive structure(Fig. 1 [134]). Regarding Claim 12, Wang further discloses: The first channel(See Fig. 1 [136]) is configured to be formed in a dielectric material to electrically short the second conductive structure(Fig. 1 [134]) and the third conductive structure(Fig. 1 [114]). Regarding Claim 13, Wang further discloses: The dielectric material(Fig. 1 [136]) is disposed over at least the third conductive structure(Fig. 1 [114]). Regarding Claim 17, Wang discloses: A method of operating a semiconductor device(See Figs. 1-8) comprising: Receiving, through a first conductive structure(Fig. 1 [133]) electrically connected to a gate(Fig. 1 [110]) of a metal-oxide-semiconductor(MOS) device, a word line voltage(Fig. 1 [Word Line], See paragraph 0073); Receiving, through a second conductive structure(Fig. 1 [128]) extending in a first direction(sideways), a bit line voltage(See paragraph 0058); and Creating a channel between a third conductive structure(Fig. 1 [132]) and a fourth conductive structure(Fig. 1 [114]) each extending in a second direction(vertically), wherein the fourth conductive structure(Fig. 1 [114]) is coupled to one of a drain or a source(Fig. 1 [108]) of the MOS device(Fig. 1 [106/108/110/116]); Wherein the second conductive structure(Fig. 1 [128]) is disposed above the third and fourth conductive structures(Fig. 1 [132/114]). Regarding Claim 18, Wang further discloses: Receiving the bit line voltage through a via structure(Fig. 1 [130]) coupling the second conductive structure(Fig. 1 [128]) and to the third conductive structure(Fig. 1 [132]); Wherein the via structure(Fig. 1 [130]) is disposed directly above the third conductive structure(Fig. 1 [132])/ Regarding Claim 19, Wang further discloses: The via structure(Fig. 1 [130]) is spaced from the fourth conductive structure(Fig. 1 [114]) in the second direction. Regarding Claim 20, Wang further discloses: The channel(See Fig. 1 [136]) is configured to be formed in a dielectric material(Fig. 1 [136]) to electrically short the third conductive structure(Fig. 1 [132]) and the fourth conductive structure(Fig. 1 [114]). Claim Rejections - 35 USC § 103 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 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claim(s) 7-9, 14-16 is/are rejected under 35 U.S.C. 103 as being unpatentable over Wang. Regarding Claim 7, In the embodiment of Claim 1, Wang does not teach or disclose receiving through a fourth conductive structure the bit line voltage and creating a second channel between the fourth conductive structure and the third conductive structure. In an alternative embodiment, Wang shows a fourth conductive structure(Fig. 28 [2602]) receiving a bit line voltage(See paragraph 0119) and creating a second channel between the fourth conductive structure(Fig. 28 [2602]) and the third conductive structure(Fig. 28 [2106]). It would have been obvious to one of ordinary skill in the art at the time the application at hand was filed to implement features from Wang’s alternate embodiment to achieve a method in accordance with the claims at hand. One might have been motivated to provide this alternate antifuse structure to increase the amount of surface area of the antifuse plates and improve the reliability of the programming operation. Performing this modification would have generated a predictable result by generating an alternate embodiment of a method of operating Wang’s device. Regarding Claim 8, In the embodiment of Claim 1, Wang does not teach or disclose receiving the bit line voltage through a second via structure disposed directly above the fourth conductive structure. In an alternative embodiment, Wang shows a fourth conductive structure(Fig. 28 [2802]) receiving a bit line voltage(See paragraph 0119) and receiving this signal through a second via(Fig. 28 [2804]). It would have been obvious to one of ordinary skill in the art at the time the application at hand was filed to implement features from Wang’s alternate embodiment to achieve a method in accordance with the claims at hand. One might have been motivated to provide this alternate antifuse structure to increase the amount of surface area of the antifuse plates and improve the reliability of the programming operation. Performing this modification would have generated a predictable result by generating an alternate embodiment of a method of operating Wang’s device. Regarding Claim 9, Wang further discloses: The second, third, and fourth(Fig. 1 [132/114/128]) conductive structures extend in a first direction(sideways) and are spaced from each other in a second direction perpendicular to the first direction. Regarding Claim 14, In the embodiment of Claim 1, Wang does not teach or disclose receiving through a fourth conductive structure the bit line voltage and creating a second channel between the fourth conductive structure and the third conductive structure. In an alternative embodiment, Wang shows a fourth conductive structure(Fig. 28 [2602]) receiving a bit line voltage(See paragraph 0119) and creating a second channel between the fourth conductive structure(Fig. 28 [2602]) and the third conductive structure(Fig. 28 [2106]). It would have been obvious to one of ordinary skill in the art at the time the application at hand was filed to implement features from Wang’s alternate embodiment to achieve a method in accordance with the claims at hand. One might have been motivated to provide this alternate antifuse structure to increase the amount of surface area of the antifuse plates and improve the reliability of the programming operation. Performing this modification would have generated a predictable result by generating an alternate embodiment of a method of operating Wang’s device. Regarding Claim 15, In the embodiment of Claim 1, Wang does not teach or disclose receiving the bit line voltage through a second via structure disposed directly above the fourth conductive structure. In an alternative embodiment, Wang shows a fourth conductive structure(Fig. 28 [2802]) receiving a bit line voltage(See paragraph 0119) and receiving this signal through a second via(Fig. 28 [2804]). It would have been obvious to one of ordinary skill in the art at the time the application at hand was filed to implement features from Wang’s alternate embodiment to achieve a method in accordance with the claims at hand. One might have been motivated to provide this alternate antifuse structure to increase the amount of surface area of the antifuse plates and improve the reliability of the programming operation. Performing this modification would have generated a predictable result by generating an alternate embodiment of a method of operating Wang’s device. Regarding Claim 16, Wang further discloses: The second, third, and fourth(Fig. 1 [132/114/128]) conductive structures extend in a first direction(sideways) and are spaced from each other in a second direction perpendicular to the first direction. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Okada et al.(US 20210257376 A1) discloses an antifuse cell. Chung et al.(US 10770160 B2) discloses an antifuse cell. Chang et al.(US 20200058660 A1) discloses an antifuse cell. Any inquiry concerning this communication or earlier communications from the examiner should be directed to MARSHALL MU-NUO HATFIELD whose telephone number is (703)756-1506. The examiner can normally be reached Mon-Thus 11:00 AM-9:00PM 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, 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 /MARSHALL MU-NUO HATFIELD/Examiner, Art Unit 2897
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Prosecution Timeline

Jul 30, 2024
Application Filed
Sep 22, 2026
Non-Final Rejection mailed — §102, §103 (current)

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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
93%
Grant Probability
97%
With Interview (+4.4%)
3y 4m (~1y 2m remaining)
Median Time to Grant
Low
PTA Risk
Based on 96 resolved cases by this examiner. Grant probability derived from career allowance rate.

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