Prosecution Insights
Last updated: October 22, 2026
Application No. 18/784,428

INTERCONNECT STRUCTURE AND METHOD OF FORMING THE SAME

Non-Final OA §112§DP
Filed
Jul 25, 2024
Priority
Aug 30, 2017 — provisional 62/552,256 +3 more
Examiner
VU, HUNG K
Art Unit
2897
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Taiwan Semiconductor Manufacturing Company, Ltd.
OA Round
1 (Non-Final)
88%
Grant Probability
Favorable
1-2
OA Rounds
3m
Est. Remaining
97%
With Interview

Examiner Intelligence

Grants 88% — above average
88%
Career Allowance Rate
899 granted / 1025 resolved
+19.7% vs TC avg
Moderate +9% lift
Without
With
+9.4%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
32 currently pending
Career history
1063
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
43.6%
+3.6% vs TC avg
§102
37.1%
-2.9% vs TC avg
§112
11.9%
-28.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1025 resolved cases

Office Action

§112 §DP
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 § 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 8-15 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. In claim 8, lines 6-7, the recitation of “the insulation layer is further disposed between a bottom surface of the first conductive structure and a top surface of the second conductive structure” is unclear because Figures of the present application only disclose the insulation layer is disposed at a bottom side surface of the first conductive structure and at a top surface of the second conductive structure. In claim 8, lines 11-14, the recitation of “the sidewalls of the insulation layer are disposed between the barrier layer and the sidewalls of the first conductive structure, and the bottom wall of the insulation layer is disposed between a bottom wall of the barrier and the top surface of the second conductive structure” is unclear because Figures of the present application only disclose the sidewalls of the insulation layer are disposed between the barrier layer and the sidewalls of the first conductive structure, or the barrier layer is disposed between the sidewalls of the insulation layer and the sidewalls of the first conductive structure, and the bottom wall of the insulation layer is disposed at a bottom wall of the barrier and at the top surface of the second conductive structure. Double Patenting The nonstatutory double patenting rejection is based on a judicially created doctrine grounded in public policy (a policy reflected in the statute) so as to prevent the unjustified or improper timewise extension of the “right to exclude” granted by a patent and to prevent possible harassment by multiple assignees. A nonstatutory double patenting rejection is appropriate where the conflicting claims are not identical, but at least one examined application claim is not patentably distinct from the reference claim(s) because the examined application claim is either anticipated by, or would have been obvious over, the reference claim(s). See, e.g., In re Berg, 140 F.3d 1428, 46 USPQ2d 1226 (Fed. Cir. 1998); In re Goodman, 11 F.3d 1046, 29 USPQ2d 2010 (Fed. Cir. 1993); In re Longi, 759 F.2d 887, 225 USPQ 645 (Fed. Cir. 1985); In re Van Ornum, 686 F.2d 937, 214 USPQ 761 (CCPA 1982); In re Vogel, 422 F.2d 438, 164 USPQ 619 (CCPA 1970); In re Thorington, 418 F.2d 528, 163 USPQ 644 (CCPA 1969). A timely filed terminal disclaimer in compliance with 37 CFR 1.321(c) or 1.321(d) may be used to overcome an actual or provisional rejection based on nonstatutory double patenting provided the reference application or patent either is shown to be commonly owned with the examined application, or claims an invention made as a result of activities undertaken within the scope of a joint research agreement. See MPEP § 717.02 for applications subject to examination under the first inventor to file provisions of the AIA as explained in MPEP § 2159. See MPEP § 2146 et seq. for applications not subject to examination under the first inventor to file provisions of the AIA . A terminal disclaimer must be signed in compliance with 37 CFR 1.321(b). The filing of a terminal disclaimer by itself is not a complete reply to a nonstatutory double patenting (NSDP) rejection. A complete reply requires that the terminal disclaimer be accompanied by a reply requesting reconsideration of the prior Office action. Even where the NSDP rejection is provisional the reply must be complete. See MPEP § 804, subsection I.B.1. For a reply to a non-final Office action, see 37 CFR 1.111(a). For a reply to final Office action, see 37 CFR 1.113(c). A request for reconsideration while not provided for in 37 CFR 1.113(c) may be filed after final for consideration. See MPEP §§ 706.07(e) and 714.13. The USPTO Internet website contains terminal disclaimer forms which may be used. Please visit www.uspto.gov/patent/patents-forms. The actual filing date of the application in which the form is filed determines what form (e.g., PTO/SB/25, PTO/SB/26, PTO/AIA /25, or PTO/AIA /26) should be used. A web-based eTerminal Disclaimer may be filled out completely online using web-screens. An eTerminal Disclaimer that meets all requirements is auto-processed and approved immediately upon submission. For more information about eTerminal Disclaimers, refer to www.uspto.gov/patents/apply/applying-online/eterminal-disclaimer. Claims 1-18 are rejected on the ground of nonstatutory double patenting as being unpatentable over claims 1-20 of U.S. Patent No. 11,664,308. Although the claims at issue are not identical, they are not patentably distinct from each other because the limitations recited in claims 1-18 of the instant application are encompassed by claims 1-20 of U.S. Patent No. 11,664,308. Instant Application 18/784428 U.S. Patent No. 11,664,308 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 1 or 9 9 2 or 10 10 3 or 11 11 4 or 12 12 5 or 13 13 6 or 14 14 7 or 15 15 17 16 18 17 19 18 20 Claims 19-20 are rejected on the ground of nonstatutory double patenting as being unpatentable over claim 18 of U.S. Patent No. 11,664,308 in view of Boemmels et al. (US 2009/0085173). Regarding claim 19, Claim 18 of U.S. Patent No. 11,664,308 does not disclose the conductive structure comprises a via. However, Boemmels et al. discloses a semiconductor device having a conductive structure comprises a via. Therefore, it would have been obvious to one of ordinary skills in the art at the time the invention was made to form the conductor structure of Claim 18 of U.S. Patent No. 11,664,308 comprising a via, such as taught by Boemmels et al. in order to have the desired configuration. Regarding claim 20, Claim 18 of U.S. Patent No. 11,664,308 does not disclose the work function metal comprises one of: titanium tungsten, and aluminum. However, Boemmels et al. discloses a semiconductor device comprise a barrier layer having a metal comprises one of: titanium tungsten, and aluminum, which is similar to the work function metal of the claimed invention. Note Figure and of Boemmels et al. Therefore, it would have been obvious to one of ordinary skills in the art at the time the invention was made to form the work function metal of Claim 18 of U.S. Patent No. 11,664,308 comprising one of: titanium tungsten, and aluminum, such as taught by Boemmels et al. in order to have the desired work function ratio. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to HUNG K VU whose telephone number is (571)272-1666. The examiner can normally be reached Monday - Friday: 7am - 5pm. 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, JACOB CHOI can be reached at (469) 295-9060. 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. /HUNG K VU/ Primary Examiner, Art Unit 2897
Read full office action

Prosecution Timeline

Jul 25, 2024
Application Filed
Sep 30, 2026
Non-Final Rejection mailed — §112, §DP (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
88%
Grant Probability
97%
With Interview (+9.4%)
2y 6m (~3m remaining)
Median Time to Grant
Low
PTA Risk
Based on 1025 resolved cases by this examiner. Grant probability derived from career allowance rate.

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