Prosecution Insights
Last updated: April 19, 2026
Application No. 18/728,224

Quantized Bistable Resistively-coupled Ising Machine

Non-Final OA §102
Filed
Jul 11, 2024
Examiner
KINKEAD, ARNOLD M
Art Unit
2849
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
UNIVERSITY OF ROCHESTER
OA Round
1 (Non-Final)
91%
Grant Probability
Favorable
1-2
OA Rounds
2y 2m
To Grant
99%
With Interview

Examiner Intelligence

Grants 91% — above average
91%
Career Allow Rate
1250 granted / 1373 resolved
+23.0% vs TC avg
Moderate +8% lift
Without
With
+8.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 2m
Avg Prosecution
21 currently pending
Career history
1394
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
40.8%
+0.8% vs TC avg
§102
33.3%
-6.7% vs TC avg
§112
17.4%
-22.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1373 resolved cases

Office Action

§102
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 . Priority Receipt is acknowledged of certified copies of papers required by 37 CFR 1.55. 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) 1,3,5-7 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) Re claims 1, 3 and 5-7: 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 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 Allowable Subject Matter Claims 9-12 are allowed. Claim 2, 4 and 8 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. 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 2849 /ARNOLD M KINKEAD/Primary Examiner, Art Unit 2849
Read full office action

Prosecution Timeline

Jul 11, 2024
Application Filed
Nov 04, 2025
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12603651
ELECTRONIC DEVICE AND METHOD THAT APPLIES STRESS TO TRANSISTORS
2y 5m to grant Granted Apr 14, 2026
Patent 12597932
QUBIT CONTROL CIRCUIT
2y 5m to grant Granted Apr 07, 2026
Patent 12591797
GEOMETRICALLY ENHANCED CLIFFORD QUANTUM COMPUTER
2y 5m to grant Granted Mar 31, 2026
Patent 12592666
METHODS AND SYSTEMS FOR REDUCING A FREQUENCY DRIFT IN A VOLTAGE CONTROLLED OSCILLATOR (VCO)
2y 5m to grant Granted Mar 31, 2026
Patent 12587015
Dispatchable Decentralized Scalable Solar Generation Systems
2y 5m to grant Granted Mar 24, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

AI Strategy Recommendation

Get an AI-powered prosecution strategy using examiner precedents, rejection analysis, and claim mapping.
Powered by AI — typically takes 5-10 seconds

Prosecution Projections

1-2
Expected OA Rounds
91%
Grant Probability
99%
With Interview (+8.0%)
2y 2m
Median Time to Grant
Low
PTA Risk
Based on 1373 resolved cases by this examiner. Grant probability derived from career allow rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month