Prosecution Insights
Last updated: April 19, 2026
Application No. 18/309,277

Millimeter-Wave Passive Circuit Designs with Wafer-Level Chip-Scale Package

Non-Final OA §102§112
Filed
Apr 28, 2023
Examiner
CHANG, JAY C
Art Unit
2817
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Taiwan Semiconductor Manufacturing Company Ltd.
OA Round
1 (Non-Final)
85%
Grant Probability
Favorable
1-2
OA Rounds
2y 5m
To Grant
99%
With Interview

Examiner Intelligence

Grants 85% — above average
85%
Career Allow Rate
537 granted / 635 resolved
+16.6% vs TC avg
Moderate +14% lift
Without
With
+14.5%
Interview Lift
resolved cases with interview
Typical timeline
2y 5m
Avg Prosecution
43 currently pending
Career history
678
Total Applications
across all art units

Statute-Specific Performance

§101
0.4%
-39.6% vs TC avg
§103
38.5%
-1.5% vs TC avg
§102
32.3%
-7.7% vs TC avg
§112
25.8%
-14.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 635 resolved cases

Office Action

§102 §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 . Information Disclosure Statement The information disclosure statements (IDS) submitted on 7/31/2023 and 3/7/2024 are in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statements are being considered by the examiner. Election/Restrictions Applicant’s election without traverse of Group I in the reply filed on 1/27/2026 is acknowledged. Claims 17-20 are withdrawn from further consideration pursuant to 37 CFR 1.142(b) as being drawn to a nonelected Group, there being no allowable generic or linking claim. Election was made without traverse in the reply filed on 1/27/2026. Claim Objections Claim 11 is objected to because of the following informalities: Claim 11 recites the limitations “the front-end module” in lines 5 and 6 of the claim, which the Examiner suggests amending to “the front-end module circuit”, because it appears the claimed element was originally introduced using that specific language in line 3 of the claim. Appropriate correction is required. 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 1-10 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 1 recites “radio frequency communications” in line 7 of the claim, however a “radio frequency communications” element was already introduced earlier in line 4 of the claim, and thereby it is unclear whether the “radio frequency communications” in line 7 of the claim is directed to that same element and therefore should be properly amended to “the radio frequency communications” or directed to an entirely different element and therefore should be amended with specific language to distinguish it from the already introduced element. Claim 3 recites the limitation “the radio frequency communications” in line 1 of the claim, however claim 3 depends from claim 1, which recites “radio frequency communications” in both lines 4 and 7 of claim 1. Thereby, it is unclear which specific “radio frequency communications” element is being referenced in the limitation “the radio frequency communications” in line 1 of claim 3. Note the dependent claims 2-10 necessarily inherit the indefiniteness of the claims on which they depend. A. Prior-art rejections based at least in part by Khoury 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. Claims 1, 4-8 and 10-14 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Khoury (US 2017/0324160 A1). Regarding independent claim 1, Figures 5A and 7D of Khoury disclose a device, comprising: a substrate 44 (“system board”- ¶¶0061, 0073, as depicted in Figs. 3B-3C, which is connected to bumps 29 as shown in Fig. 7D); a front-end module circuit 51 (“component layer”- ¶0066, specifically the configuration detailed in Fig. 7D) situated over the substrate 44 and configured to provide radio frequency communications (¶0075); and a wafer-level chip-scale package circuit (i.e., collectively the elements/layer above 51) situated over the front-end module circuit 51 and connected to the front-end module circuit 51 and configured to provide passive components for radio frequency communications (¶¶0066, 0068). Regarding claim 4, Figures 5A and 7D of Khoury disclose wherein the front-end module circuit 51 includes a radio frequency power amplifier 74 (“power amplifier”- ¶0075). Regarding claim 5, Figures 5A and 7D of Khoury disclose wherein the front-end module circuit 51 includes a radio frequency low-noise amplifier 72 (“LNA”- ¶0075). Regarding claim 6, Figures 5A and 7D of Khoury disclose wherein the wafer-level chip-scale package circuit includes a radio frequency matching network (i.e., the elements in the routing layers associated with the matching networks- ¶¶0068, 0075). Regarding claim 7, Figures 5A and 7D of Khoury disclose wherein the wafer-level chip-scale package circuit includes a radio frequency power combiner circuit (i.e., “mixer”- ¶0076). Regarding claim 8, Figures 5A and 7D of Khoury disclose wherein the wafer-level chip-scale package circuit includes an antenna 14 (“antenna layer”- ¶0066). Regarding claim 10, Figures 5A and 7D of Khoury disclose wherein the wafer-level chip-scale package circuit includes a redistribution layer (i.e., collectively the dielectric and the routing layers above layer 51- ¶0066) that is part of at least one of a radio frequency matching network (i.e., the elements in the routing layers associated with the matching networks- ¶¶0068, 0075), a radio frequency power combiner (i.e., “mixer”- ¶0076), and an antenna 14 (“antenna layer”- ¶0066) (¶¶0068, 0075). Regarding independent claim 11, Figures 5A and 7D of Khoury discloses a circuit, comprising: a substrate 44 (“system board”- ¶¶0061, 0073, as depicted in Figs. 3B-3C, which is connected to bumps 29 as shown in Fig. 7D); a front-end module circuit 51 (“component layer”- ¶0066, specifically the configuration detailed in Fig. 7D) situated over the substrate 44 and including a radio frequency power amplifier 74 (“power amplifier”- ¶0075) and a radio frequency low noise amplifier 72 (“LNA”- ¶0075); and a wafer-level chip-scale package circuit (i.e., collectively the elements/layer above 51) situated over the front-end module 51 and connected to the front-end module 51 and including a radio frequency matching network (i.e., the elements in the routing layers associated with the matching networks- ¶¶0068, 0075) and an antenna 14 (“antenna layer”- ¶0066). Regarding claim 12, Figures 5A and 7D of Khoury disclose wherein the wafer-level chip-scale package circuit includes a radio frequency power combiner (i.e., “mixer”- ¶0076). Regarding claim 13, Figures 5A and 7D of Khoury disclose wherein the wafer-level chip-scale package circuit includes a redistribution layer (i.e., collectively the dielectric and the routing layers above layer 51- ¶0066) that is part of at least one of the radio frequency matching network, the antenna 14, and the radio frequency power combiner (¶¶0068, 0075). Regarding claim 14, Figures 5A and 7D of Khoury disclose wherein the wafer-level chip-scale package circuit includes a redistribution layer (i.e., collectively the dielectric and the routing layers above layer 51- ¶0066) that is part of a capacitor (i.e., “capacitor”- ¶0075) in the radio frequency matching network or in the radio frequency power combiner (¶¶0068, 0075). B. Prior-art rejections based at least in part by Nagaishi Claim Rejections - 35 USC § 102 Claims 1-3 and 9 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Nagaishi et al. (US 2008/0129408 A1, hereinafter “Nagaishi”). Regarding independent claim 1, Figures 1-4 of Nagaishi disclose a device, comprising: a substrate 33 (“substrate”- ¶0060); a front-end module circuit 2 (“RF circuit”- ¶0054) situated over the substrate 1 and configured to provide radio frequency communications (¶¶0054-0056); and a wafer-level chip-scale package circuit 3/6/7 (collectively elements 3, 6 and 7) situated over an underside of the front-end module circuit 2 and connected to the front-end module circuit 2 and configured to provide passive components for radio frequency communications (¶0054). Regarding claim 2, Figures 1-4 of Nagaishi disclose wherein the front-end module circuit 2 is configured to provide millimeter wavelength communications (¶¶0054-0056). Regarding claim 3, Figures 1-4 of Nagaishi disclose wherein the radio frequency communications are millimeter wavelength communications (¶¶0054-0056). Regarding claim 9, Figures 1-4 of Nagaishi disclose wherein the wafer-level chip-scale package circuit 3/6/7 includes an antenna 3 (“antenna”- ¶0055) for phased-array communications (¶0055). Allowable Subject Matter Claims 15-16 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. Regarding claim 15 (which claim 16 depends from), the prior art of record including Khoury and/or Nagaishi, either singularly or in combination, does not disclose or suggest the combination of limitations including, but not limited to, “[the] circuit…comprising a frontside and a backside, wherein the wafer-level chip-scale package circuit is over the frontside and a through-silicon-via extends through the substrate to the backside”. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure: Dutta et al. (US 2023/0088569 A1), which discloses a circuit configured to provide radio frequency communications utilizing amplifiers. Any inquiry concerning this communication or earlier communications from the examiner should be directed to JAY C CHANG whose telephone number is (571)272-6132. The examiner can normally be reached Mon- Fri 12pm-10pm. 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, Eliseo Ramos-Feliciano can be reached at (571)-272-7925. 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. /JAY C CHANG/Primary Examiner, Art Unit 2817
Read full office action

Prosecution Timeline

Apr 28, 2023
Application Filed
Feb 12, 2026
Non-Final Rejection — §102, §112 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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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
85%
Grant Probability
99%
With Interview (+14.5%)
2y 5m
Median Time to Grant
Low
PTA Risk
Based on 635 resolved cases by this examiner. Grant probability derived from career allow rate.

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