Prosecution Insights
Last updated: October 02, 2026
Application No. 18/728,224

Quantized Bistable Resistively-coupled Ising Machine

Non-Final OA §102§Other
Filed
Jul 11, 2024
Priority
Jan 12, 2022 — provisional 63/298,859 +1 more
Examiner
KINKEAD, ARNOLD M
Art Unit
2849
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
University of Rochester
OA Round
2 (Non-Final)
91%
Grant Probability
Favorable
2-3
OA Rounds
0m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 91% — above average
91%
Career Allowance Rate
1280 granted / 1403 resolved
+23.2% vs TC avg
Moderate +8% lift
Without
With
+7.8%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 0m
Avg Prosecution
14 currently pending
Career history
1414
Total Applications
across all art units

Statute-Specific Performance

§101
1.1%
-38.9% vs TC avg
§103
41.6%
+1.6% vs TC avg
§102
30.8%
-9.2% vs TC avg
§112
18.1%
-21.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1403 resolved cases

Office Action

§102 §Other
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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after allowance or after an Office action under Ex Parte Quayle, 25 USPQ 74, 453 O.G. 213 (Comm'r Pat. 1935). Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, prosecution in this application has been reopened pursuant to 37 CFR 1.114. Applicant's submission filed on 07-30-26 has been entered. Claim 8 was previously canceled. 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, 3-7 and 13 is/are rejected under 35 U.S.C. 102as being anticipated by AAPA, NPL to Afoakwa et al., (CMOS Ising Machines with Coupled Bistable Nodes, arXiv:2007.06665v1 [quant-ph] 13 Jul 2020) of record. Re claims 1: The AAPA, NPL to Afoakwa et al, see highlighted figure 8 below, shows a computation node, with an input(IN+) an output(out+); a bistable node(ZIV structure), comprising an input(by M2,M4) and an output( by M1,M3), the output configured to have at least two equilibrium output voltages; These output voltages(-/+ 2.3 v) are output from the ZIV structure in this embodiment(for figure 8). PNG media_image1.png 122 528 media_image1.png Greyscale a first buffer circuit(M17,M18), having an input and an output, the buffer input(M18 gate) connected to the output of the bistable node and the buffer output(M17 gate) connected to the output(out+) of the computation node, the buffer circuit configured to provide a first output voltage when a voltage at the buffer input is below a threshold, and a second output voltage when the voltage at the buffer input is above the threshold(i.e. buffer transistors on/off); and a current conveyor(CCCS M22-M26) node having an input(between M22,M24) connected to the input of the computation node(IN+) and an output(M23,M25) connected to the input(M2 side) of the bistable node, the current conveyor configured to hold its input at a constant voltage and mirror(M25,M26) current received at the input into the input of the bistable node. PNG media_image2.png 778 977 media_image2.png Greyscale Re claims 1 and 4: As noted in the reference, p. 754, top left column, ll 6-9:…”the spin of the node can be read out by a digital latch (e.g., a D flip-flop) connected to the ZIV diode’s V + terminal. This converts the spin to a bit (1 or 0).”, that is, at the first buffer output+, the logic gate, such as a D latch/ flip-flop is considered. Inherently, this goes for the other buffer output- for the spin to be read out there. Re claim 3: The computation node of claim 1, the computation node further comprising: a second, inverting output(OUT-); and a second buffer circuit(M6,7) having an input(M6 gate) connected to an inverting output of the bistable(ZIV) node, the inverting output of the bistable node configured to have an inverse value(OUT-) of the output of the bistable node(OUT+), the second buffer circuit further comprising an output(M7 gate) connected to the second inverting output of the computation node. Re claim 5: a second, inverting input(IN-); and a second current conveyor(M11,12,14,15) node having an input (between m12,13)connected to the second inverting input(IN-) of the computation node and an output connected to a second input of the bistable node(above M4), the current conveyor configured to hold its input at a constant voltage and mirror current received at the input into the second input of the bistable node. Re claims 6 and 7, see figure 2 embodiment, for a computation node representation with resistive coupling nodes with inputs from other computation nodes being coupled in, forming the network. PNG media_image3.png 357 595 media_image3.png Greyscale Re claim 13: a D Latch is a regenerative type latch with feedback. Allowable Subject Matter Claims 9-12 and 15 are allowed. Claim 2 and 14 is 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. Any inquiry concerning this communication or earlier communications from the examiner should be directed to ARNOLD M KINKEAD whose telephone number is (571)272-1763. The examiner can normally be reached M-F 7am-5:30pm(Fri-Flex). 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, Menatoallah Youssef can be reached at 571-270-3684. 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. /ARNOLD M KINKEAD/ Primary Examiner, Art Unit 2836
Read full office action

Prosecution Timeline

Jul 11, 2024
Application Filed
Nov 06, 2025
Non-Final Rejection mailed — §102, §Other
May 05, 2026
Response Filed
Jul 31, 2026
Request for Continued Examination
Aug 03, 2026
Response after Non-Final Action
Aug 11, 2026
Non-Final Rejection mailed — §102, §Other (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

2-3
Expected OA Rounds
91%
Grant Probability
99%
With Interview (+7.8%)
2y 0m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 1403 resolved cases by this examiner. Grant probability derived from career allowance rate.

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