Office Action Predictor
Last updated: April 15, 2026
Application No. 18/345,921

OPERATIONAL AMPLIFIER, DRIVE CIRCUIT, INTERFACE CHIP, AND ELECTRONIC DEVICE

Non-Final OA §102
Filed
Jun 30, 2023
Examiner
NGUYEN, KHIEM D
Art Unit
2843
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Huawei Technologies Co., LTD.
OA Round
1 (Non-Final)
86%
Grant Probability
Favorable
1-2
OA Rounds
2y 3m
To Grant
96%
With Interview

Examiner Intelligence

Grants 86% — above average
86%
Career Allow Rate
1872 granted / 2187 resolved
+17.6% vs TC avg
Moderate +10% lift
Without
With
+10.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 3m
Avg Prosecution
73 currently pending
Career history
2260
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
44.5%
+4.5% vs TC avg
§102
30.7%
-9.3% vs TC avg
§112
15.2%
-24.8% vs TC avg
Black line = Tech Center average estimate • Based on career data from 2187 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 . Information Disclosure Statement The information disclosure statement (IDS) submitted on 10/23/2024. The submission is in compliance with the provisions of 37 CFR 1.97. Accordingly, the information disclosure statement is being considered by the examiner. Claim Rejections - 35 USC § 102 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 1 is rejected under 35 U.S.C. 102(a)(1) as being anticipated by Murasaka et al. (WO 2016009924 A1), hereinafter called Murasaka. PNG media_image1.png 613 968 media_image1.png Greyscale Annotated Fig. 3 for ease of reference. Regarding claim 1, Murasaka discloses in annotated Fig. 3, an operational amplifier (annotated Fig. 3) comprising: a first load (L1, Fig. 3); a second load (L2, Fig. 3); a first switching transistor group (G1); a second switching transistor group (G2); and a tail current source (ITAIL, Fig. 3), wherein a first end (E1) of the first switching transistor group (G1) is connected to a first output end (OUTM) of the operational amplifier, and is connected to a power supply (annotated VDD) of the operational amplifier by using the first load (L1), and a second end (E2) of the first switching transistor group is grounded by using the tail current source (ITAIL, it is noted that Fig. 3 of Murasaka having similarly arrangement to the Fig. 3 of the examining application); a first end (E3) of the second switching transistor group (G2) is connected to a second output end (OUTP) of the operational amplifier, and is connected to the power supply (VDD) by using the second load (L2), and a second end (E4) of the second switching transistor group is grounded by using the tail current source (ITAIL); the first switching transistor group (G1) and the second switching transistor group(G2) comprise a same quantity (same type transistor) of at least two input adjustment units (AU1 and AU2), and an input end (gate terminal of M1 and gate terminal of M2) of each of the at least two input adjustment units (AU1 and AU2) is connected to an input signal (input signal, INP, INM); and the input signal connected to each of the at least two input adjustment units is adjustable. Allowable Subject Matter Claims 2-10 & 14-20 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. Claims 11-12 & 13 are allowed. Upon conclusion of a comprehensive search of the pertinent prior art, the Office indicates that the claims are allowable. The prior art when taken alone, or, in combination, cannot be construed as reasonably teaching or suggesting all of the elements of the claimed invention as arranged, disposed, or provided in the manner as claimed by the Applicant. Added primarily for emphasis, the claim recitations “an input end of the low voltage differential signal generation circuit is connected to the power supply, and a feedback signal end of the low voltage differential signal generation circuit is connected to the first output end of the operational amplifier or the second output end of the operational amplifier; the low voltage differential signal generation circuit is configured to output a common-mode signal, and the common-mode signal is a first input signal of the operational amplifier; and an output end of the low voltage differential signal generation circuit is configured to output a low voltage differential signal” in Claim 11 and “determining a target gain; and determining an adjustment signal based on the target gain, and sending the adjustment signal to the first switching transistor group and the second switching transistor group, wherein the adjustment signal is for adjusting the input signal connected to each input adjustment unit” in Claim 13 are not found in the prior art of record. Claim 12 is allowable as being dependent of claim 11. Any comments considered necessary by applicant must be submitted no later than the payment of the issue fee and, to avoid processing delays, should preferably accompany the issue fee. Such submissions should be clearly labeled “Comments on Statement of Reasons for Allowance.” Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KHIEM D NGUYEN whose telephone number is (571)270-3941. The examiner can normally be reached Mon-Fri 8:00 AM-5:00 PM EST. 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, ANDREA J LINDGREN BALTZELL can be reached at (571)272-5918. 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. /KHIEM D NGUYEN/Examiner, Art Unit 2843
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Prosecution Timeline

Jun 30, 2023
Application Filed
Sep 13, 2023
Response after Non-Final Action
Jan 03, 2026
Non-Final Rejection — §102
Apr 01, 2026
Response Filed

Precedent Cases

Applications granted by this same examiner with similar technology

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Patent 12592674
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2y 5m to grant Granted Mar 31, 2026
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
86%
Grant Probability
96%
With Interview (+10.0%)
2y 3m
Median Time to Grant
Low
PTA Risk
Based on 2187 resolved cases by this examiner. Grant probability derived from career allow rate.

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