Prosecution Insights
Last updated: April 19, 2026
Application No. 18/895,932

PWM CONTROL APPARATUS

Non-Final OA §102
Filed
Sep 25, 2024
Examiner
LAM, TUAN THIEU
Art Unit
2842
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Okuma Corporation
OA Round
1 (Non-Final)
77%
Grant Probability
Favorable
1-2
OA Rounds
2y 1m
To Grant
91%
With Interview

Examiner Intelligence

Grants 77% — above average
77%
Career Allow Rate
775 granted / 1001 resolved
+9.4% vs TC avg
Moderate +13% lift
Without
With
+13.3%
Interview Lift
resolved cases with interview
Fast prosecutor
2y 1m
Avg Prosecution
34 currently pending
Career history
1035
Total Applications
across all art units

Statute-Specific Performance

§101
0.2%
-39.8% vs TC avg
§103
36.8%
-3.2% vs TC avg
§102
36.3%
-3.7% vs TC avg
§112
20.0%
-20.0% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1001 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 . 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 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Potetz et al. (USP 5,481,560). Regarding claim 1, Potetz et al.’s figure 1 shows A PWM control apparatus comprising a normalization counter (104) configured to count up or down by an average of 2^N/Cmax between 0 and 2^N for each input of a clock signal (148), wherein: N is a natural number, Cmax is a value changing according to a carrier period, and the PWM control apparatus further comprises a comparator (124) configured to compare a normalization count value of the normalization counter with a comparison value (132) for determining a duty ratio of a PWM signal and output a comparison result as a PWM signal (156) as called for in claim 1. Claim(s) 1 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Azuma et al. (US 2005/0285582). Regarding claim 1, Azuma et al.’s figure 1 shows A PWM control apparatus comprising a normalization counter (12) configured to count up or down by an average of 2^N/Cmax between 0 and 2^N for each input of a clock signal (CK), wherein: N is a natural number, Cmax is a value changing according to a carrier period, and the PWM control apparatus further comprises a comparator (14) configured to compare a normalization count value of the normalization counter with a comparison value (13) for determining a duty ratio of a PWM signal and output a comparison result as a PWM signal (156) as called for in claim 1. Allowable Subject Matter Claims 2-5 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 The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. In this regard, applicant’s cited prior art has been carefully considered. Any inquiry concerning this communication or earlier communications from the examiner should be directed to TUAN THIEU LAM whose telephone number is (571)272-1744. The examiner can normally be reached Monday-Friday, 8:30 am to 5:00 pm. 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, Lincoln Donovan can be reached at 571-272-1988. 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. /TUAN T LAM/Primary Examiner, Art Unit 2842 3/10/2026
Read full office action

Prosecution Timeline

Sep 25, 2024
Application Filed
Mar 13, 2026
Non-Final Rejection — §102 (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
77%
Grant Probability
91%
With Interview (+13.3%)
2y 1m
Median Time to Grant
Low
PTA Risk
Based on 1001 resolved cases by this examiner. Grant probability derived from career allow rate.

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