Prosecution Insights
Last updated: July 17, 2026
Application No. 18/391,011

SYSTEMS AND METHODS FOR THREE-DIMENSIONALLY STACKING SYSTEMS ON CHIP WITH FACE-TO-FACE HYBRID BONDING

Non-Final OA §102§103
Filed
Dec 20, 2023
Priority
Aug 07, 2023 — provisional 63/518,048
Examiner
JEFFERSON, QUOVAUNDA
Art Unit
2899
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Meta Platforms Technologies LLC
OA Round
1 (Non-Final)
79%
Grant Probability
Favorable
1-2
OA Rounds
2m
Est. Remaining
88%
With Interview

Examiner Intelligence

Grants 79% — above average
79%
Career Allowance Rate
709 granted / 896 resolved
+11.1% vs TC avg
Moderate +9% lift
Without
With
+8.6%
Interview Lift
resolved cases with interview
Typical timeline
2y 9m
Avg Prosecution
35 currently pending
Career history
934
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
81.8%
+41.8% vs TC avg
§102
10.7%
-29.3% vs TC avg
§112
2.3%
-37.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 896 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. Claim(s) 1, 5, 6, 11, 15, and 16 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Kao et al, US Patent Application Publication 2021/0391302 Regarding claim 1, Kao teaches a semiconductor device comprising: a first die 106 including a driver gate configured to drive a first via ladder coupled to a first top metal layer; and a second die 104 including a load gate coupled to a second via ladder coupled to a second top metal layer, wherein the first die and the second die are stacked three-dimensionally using face-to- face hybrid bonds to couple the first top metal layer to the second top metal layer (figure 1, as labeled below). PNG media_image1.png 494 976 media_image1.png Greyscale Regarding claims 5-6, Kao teaches a network on chip in the first die connects partitioned subsystems of a circuit of the semiconductor device and cross die data communication by the network on chip has a bit width matched to a pin density of the face-to- face hybrid bonds 122, wherein all circuit drivers of the circuit correspond to standard cell drivers (figure 1). Regarding claim 11, Kao teaches a method comprising of providing a first die 106 including a driver gate configured to drive a first via ladder coupled to a first top metal layer; providing a second die 104 including a load gate coupled to a second via ladder coupled to a second top metal layer; and stacking the first die and the second die three-dimensionally using face-to-face hybrid bonds to couple the first top metal layer to the second top metal layer (figure 1, as labeled above). Regarding claims 15-16, Kao teaches a network on chip in the first die connects partitioned subsystems of a circuit of a semiconductor device and cross die data communication by the network on chip has a bit width matched to a pin density of the face-to- face hybrid bonds 122, wherein all circuit drivers of the circuit correspond to standard cell drivers (figure 1). 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) 20 is/are rejected under 35 U.S.C. 103 as being unpatentable over Kao et al, US Patent Application Publication 2021/0391302 in view of Pratt, US Patent 7,800,238. Regarding claim 20, Kao teaches a system comprising a semiconductor device includes: a first die 104 including a driver gate configured to drive a first via ladder coupled to a first top metal layer; and a second die 106 including a load gate coupled to a second via ladder coupled to a second top metal layer, wherein the first die and the second die are stacked three-dimensionally using face-to-face hybrid bonds to couple the first top metal layer to the second top metal layer (figure 1, as labeled above). Kao fails to teach a display device; and a semiconductor device configured to process images rendered to the display device. However, Pratt teaches that display devices are one of several electrical components that uses a three-dimension chip stack (see column 7, line 67). Therefore, the reference of Pratt then teaches the limitations of “a display device; and a semiconductor device configured to process images rendered to the display device” It would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to combine the teachings of Pratt with that of Kao because display devices are one of several electrical components that uses a three-dimension chip stack. Allowable Subject Matter Claims 2-4 , 7-10, 12-14 and 17-19 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. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to QUOVAUNDA JEFFERSON whose telephone number is (571)272-5051. The examiner can normally be reached M-F 7AM-4PM. 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, Dale E Page can be reached at 571-270-7877. 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. QVJ /DALE E PAGE/ Supervisory Patent Examiner, Art Unit 2899
Read full office action

Prosecution Timeline

Dec 20, 2023
Application Filed
Apr 16, 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
79%
Grant Probability
88%
With Interview (+8.6%)
2y 9m (~2m remaining)
Median Time to Grant
Low
PTA Risk
Based on 896 resolved cases by this examiner. Grant probability derived from career allowance rate.

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