Prosecution Insights
Last updated: April 19, 2026
Application No. 18/770,696

CURRENT DETECTION DEVICE

Non-Final OA §102
Filed
Jul 12, 2024
Examiner
MCANDREW, CHRISTOPHER P
Art Unit
2858
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Asahi Kasei Microdevices Corporation
OA Round
1 (Non-Final)
86%
Grant Probability
Favorable
1-2
OA Rounds
2y 5m
To Grant
99%
With Interview

Examiner Intelligence

Grants 86% — above average
86%
Career Allow Rate
820 granted / 957 resolved
+17.7% vs TC avg
Moderate +14% lift
Without
With
+14.2%
Interview Lift
resolved cases with interview
Typical timeline
2y 5m
Avg Prosecution
22 currently pending
Career history
979
Total Applications
across all art units

Statute-Specific Performance

§101
1.8%
-38.2% vs TC avg
§103
46.4%
+6.4% vs TC avg
§102
31.8%
-8.2% vs TC avg
§112
15.9%
-24.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 957 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 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. (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claims 1-20 are rejected under 35 U.S.C. 102(a)(1) & (a)(2) as being anticipated by Nakayama et al (U.S. PGPub # 2017/0003323). or (U.S. PGPub # 2017/0082659). Regarding Independent claim 1, Nakayama teaches: A current detection device, comprising at least two bus bars (Fig. 2 Elements 2-4. See paragraphs 0038-0046.) each of which includes a magnetic detection element (Fig. 2 Elements 6a-6c. See paragraphs 0038-0046.), a first current path having a larger cross-sectional area (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.), and a second current path having a smaller cross-sectional area (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.), the first current path and the second current path sandwiching the magnetic detection element ( See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.), wherein the at least two bus bars are arranged such that the first current paths face each other ( See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.). PNG media_image1.png 532 582 media_image1.png Greyscale Regarding claim 2, Nakayama teaches all elements of claim 1, upon which this claim depends. Nakayama teaches another bus bar that is arranged between the at least two bus bars (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.), and includes a magnetic detection element (Fig. 2 Elements 6a-6c. See paragraphs 0038-0046.), a third current path having a larger cross-sectional area (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.), and a fourth current path having a smaller cross-sectional area (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.), the third current path and the fourth current path sandwiching the magnetic detection element (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.). PNG media_image2.png 585 810 media_image2.png Greyscale Regarding claim 3, Nakayama teaches: A current detection device, comprising at least two bus bars (Fig. 2 Elements 2-4. See paragraphs 0038-0046.) each of which includes a magnetic detection element (Fig. 2 Elements 6a-6c. See paragraphs 0038-0046.), a first current path having a larger cross-sectional area (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.), and a second current path having a smaller cross-sectional area (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.), the first current path and the second current path sandwiching the magnetic detection element (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.), and further comprising another bus bar that is arranged between the at least two bus bars (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.), and includes a magnetic detection element (Fig. 2 Elements 6a-6c. See paragraphs 0038-0046.), a third current path having a larger cross-sectional area (Fig. 2 Elements 6a-6c. See paragraphs 0038-0046.), and a fourth current path having a smaller cross-sectional area (Fig. 2 Elements 6a-6c. See paragraphs 0038-0046.), the third current path and the fourth current path sandwiching the magnetic detection element (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.). PNG media_image3.png 585 810 media_image3.png Greyscale Regarding claim 4, Nakayama teaches all elements of claim 3, upon which this claim depends. Nakayama teaches the another bus bar is arranged such that a distance between the fourth current path of the another bus bar and one of the at least two bus bars facing the fourth current path is greater than a distance between the third current path of the another bus bar and another of the at least two bus bars facing the third current path (One can arbitrarily draw a line between the busbars shown that meets this claim limitation. See amended figure 2 below.). PNG media_image4.png 460 618 media_image4.png Greyscale Regarding claim 5, Nakayama teaches all elements of claim 4, upon which this claim depends. Nakayama teaches the at least two bus bars are arranged such that the first current paths face each other (One can arbitrarily draw a line between the busbars shown that meets this claim limitation. See amended figure 2 below.). PNG media_image5.png 491 618 media_image5.png Greyscale Regarding claim 6, Nakayama teaches all elements of claim 3, upon which this claim depends. Nakayama teaches the another bus bar is arranged such that a distance between the third current path of the another bus bar and one of the at least two bus bars facing the third current path is greater than a distance between the fourth current path of the another bus bar and another of the at least two bus bars facing the fourth current path (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.). PNG media_image6.png 460 618 media_image6.png Greyscale Regarding claim 7, Nakayama teaches all elements of claim 6, upon which this claim depends. Nakayama teaches the at least two bus bars are arranged such that the second current paths face each other (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.). Regarding claim 8, Nakayama teaches all elements of claim 1, upon which this claim depends. Nakayama teaches the first current path and the second current path have a same thickness and different widths (See Fig. 2 Elements 2-4 below with the various dimensions of the busbars. See paragraphs 0038-0046.). PNG media_image7.png 460 618 media_image7.png Greyscale Regarding claim 9, Nakayama teaches all elements of claim 1, upon which this claim depends. Nakayama teaches the first current path and the second current path have a same thickness and different widths (See Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.). Regarding claim 10, Nakayama teaches all elements of claim 1, upon which this claim depends. Nakayama teaches the bus bar includes two main body portions to which the first current path and the second current path are coupled, and the first current path and the second current path are respectively disposed closer to an inner side than an outer edge of the two main body portions in a direction in which the first current path and the second current path are arranged side by side (See Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.). PNG media_image7.png 460 618 media_image7.png Greyscale Regarding claim 11, Nakayama teaches all elements of claim 10, upon which this claim depends. Nakayama teaches each of the two main body portions includes a slit to which a substrate that supports the magnetic detection element is inserted (See Fig. 2 Elements 2a, 3a, & 4a below. See paragraphs 0038-0046.). PNG media_image7.png 460 618 media_image7.png Greyscale Regarding claim 12, Nakayama teaches: A current detection device, comprising at least two bus bars (Fig. 2 Elements 2-4. See paragraphs 0038-0046.) each of which includes a magnetic detection element (Fig. 2 Elements 6a-6c. See paragraphs 0038-0046.), a first current path having a larger cross-sectional area (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.), and a second current path having a smaller cross-sectional area (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.), wherein the at least two bus bars are arranged such that the first current paths face each other (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.). PNG media_image1.png 532 582 media_image1.png Greyscale Regarding claim 13, Nakayama teaches all elements of claim 12, upon which this claim depends. Nakayama teaches another bus bar that is arranged between the at least two bus bars (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.), and includes a magnetic detection element (Fig. 2 Elements 6a-6c. See paragraphs 0038-0046.), a third current path having a larger cross-sectional area See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.), and a fourth current path having a smaller cross-sectional area (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.). PNG media_image8.png 585 810 media_image8.png Greyscale Regarding claim 14, Nakayama teaches: A current detection device, comprising at least two bus bars (Fig. 2 Elements 2-4. See paragraphs 0038-0046.) each of which includes a magnetic detection element (Fig. 2 Elements 6a-6c. See paragraphs 0038-0046.), a first current path having a larger cross-sectional area (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.), and a second current path having a smaller cross-sectional area (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.), and further comprising another bus bar that is arranged between the at least two bus bars (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.), and includes a magnetic detection element, a third current path having a larger cross-sectional area (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.), and a fourth current path having a smaller cross-sectional area (See Examiner amended Fig. 2 Elements 2-4 below. See paragraphs 0038-0046.). PNG media_image9.png 585 810 media_image9.png Greyscale Regarding claim 15, Nakayama teaches all elements of claim 14, upon which this claim depends. Nakayama teaches the another bus bar is arranged such that a distance between the fourth current path of the another bus bar and one of the at least two bus bars facing the fourth current path is greater than a distance between the third current path of the another bus bar and another of the at least two bus bars facing the third current path (One can arbitrarily draw a line between the busbars shown that meets this claim limitation. See amended figure 2 below.). PNG media_image4.png 460 618 media_image4.png Greyscale Regarding claim 16, Nakayama teaches all elements of claim 14, upon which this claim depends. Nakayama teaches the at least two bus bars are arranged such that the first current paths face each other (All current paths face each other in some form in the figures cited.). Regarding claim 17, Nakayama teaches all elements of claim 14, upon which this claim depends. Nakayama teaches the another bus bar is arranged such that a distance between the third current path of the another bus bar and one of the at least two bus bars facing the third current path is greater than a distance between the fourth current path of the another bus bar and another of the at least two bus bars facing the fourth current path (One can arbitrarily draw a line between the busbars shown that meets this claim limitation. See amended figure 2 below.). PNG media_image6.png 460 618 media_image6.png Greyscale Regarding claim 18, Nakayama teaches all elements of claim 17, upon which this claim depends. Nakayama teaches the at least two bus bars are arranged such that the second current paths face each other (All current paths face each other in some form in the figures cited.). Regarding claim 19, Nakayama teaches all elements of claim 12, upon which this claim depends. Nakayama teaches in the at least two bus bars, the magnetic detection element is arranged so as to overlap with the second current path in a top view (See Fig. 2 wherein one can arbitrarily define a top view to meet that limitation.). Regarding claim 20, Nakayama teaches all elements of claim 12, upon which this claim depends. Nakayama teaches in the at least two bus bars, the magnetic detection element is arranged so as to overlap with a gap between the first current path and the second current path in a top view (See Fig. 2 wherein one can arbitrarily define a top view to meet that limitation.). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. The prior art listed but not cited represents the previous state of the art and analogous art that teaches some of the limitations claimed by applicant. Any inquiry concerning this communication or earlier communications from the examiner should be directed to CHRISTOPHER P MCANDREW whose telephone number is (469)295-9025. The examiner can normally be reached Monday-Thursday 6-4:30. 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, Lee Rodak can be reached on 571-270-5628. 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. /CHRISTOPHER P MCANDREW/Primary Examiner, Art Unit 2858
Read full office action

Prosecution Timeline

Jul 12, 2024
Application Filed
Feb 18, 2026
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12601796
PHASE DIFFERENCE MEASUREMENT DEVICE, MEASUREMENT METHOD, AND ELECTRICAL EQUIPMENT COMPRISING SAME
2y 5m to grant Granted Apr 14, 2026
Patent 12596141
QUANTUM ELECTROMAGNETIC FIELD SENSOR
2y 5m to grant Granted Apr 07, 2026
Patent 12578368
ROTATION MECHANISM FOR MEASURING DEVICE
2y 5m to grant Granted Mar 17, 2026
Patent 12571753
END-OF-LIFE SENSORS FOR FABRICS
2y 5m to grant Granted Mar 10, 2026
Patent 12571828
SOLID STATE ELECTRIC FIELD SENSOR
2y 5m to grant Granted Mar 10, 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
86%
Grant Probability
99%
With Interview (+14.2%)
2y 5m
Median Time to Grant
Low
PTA Risk
Based on 957 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