Prosecution Insights
Last updated: April 19, 2026
Application No. 18/743,261

MAGNETIC SENSOR DEVICE

Non-Final OA §102
Filed
Jun 14, 2024
Examiner
SCHINDLER, DAVID M
Art Unit
2858
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
TDK Corporation
OA Round
1 (Non-Final)
41%
Grant Probability
Moderate
1-2
OA Rounds
4y 3m
To Grant
64%
With Interview

Examiner Intelligence

Grants 41% of resolved cases
41%
Career Allow Rate
246 granted / 599 resolved
-26.9% vs TC avg
Strong +23% interview lift
Without
With
+23.0%
Interview Lift
resolved cases with interview
Typical timeline
4y 3m
Avg Prosecution
71 currently pending
Career history
670
Total Applications
across all art units

Statute-Specific Performance

§101
1.6%
-38.4% vs TC avg
§103
36.0%
-4.0% vs TC avg
§102
23.5%
-16.5% vs TC avg
§112
34.8%
-5.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 599 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 . This action is in response to the communication filed 3/3/2026. Election/Restrictions Applicant's election with traverse of the species election in the reply filed on 3/3/2026 is acknowledged. The traversal is on the ground(s) that the subject matter of all species is sufficiently related that a thorough search of the subject matter for one species would encompass a search for the remaining species. This is not found persuasive because: The Examiner respectfully notes that the arguments by applicant generically assert that a search for one species would reasonably encompass all species without any specific explanation supporting this argument. In the instant case, the Examiner respectfully disagrees with this argument. For example, some species require all sensors to have at least some elements covered by the wiring layer, while some species require certain sensors to not be covered while others are covered by the wiring layer. For example, some species require only some sensors to be covered by the wiring layer while others in that same species cover the sensors with a dummy element. A search for the species of Figure 16, for example, which requires only some sensors covered with the wiring layer while others are covered by a dummy layer, would not reasonably find art where all sensors are covered by the wiring layer as found in the species of Figure 13, for example. Searching for a dummy element or layer would not reasonably uncover art for a mutually exclusive species that does not use such a dummy element and instead uses a different element (the wiring layer itself). Similarly, a search for a current sensor would not reasonably identify prior art for an angle sensor, magnetic compass, or camera module. The Examiner therefore respectfully disagrees with applicant, as the identified species are mutually exclusive, distinct, non-obvious, and a serious search burden would exist to search for each of the species given their clear distinctions as evidenced by the figures and disclosure. The requirement is still deemed proper and is therefore made FINAL. Claims 3 and 5-16 are withdrawn from further consideration pursuant to 37 CFR 1.142(b), as being drawn to a nonelected species, there being no allowable generic or linking claim. Applicant timely traversed the restriction (election) requirement in the reply filed on 3/3/2026. 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. Claims 1, 2, and 4 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by JP 2022-158932 (‘932). Note that the cited paragraphs for this reference come from the provided English machine translation. PNG media_image1.png 359 552 media_image1.png Greyscale PNG media_image2.png 368 601 media_image2.png Greyscale ‘932 discloses A magnetic sensor device comprising: a plurality of magnetic detection element arrays formed in a first layer (Figures 21 and 23 / note Figure 21 is relied upon solely to show a cross section for how the sensor elements are connected), (Paragraph [0095] / note the array of elements are indicated by element (2)); and a wiring layer (3,4) that is formed in a second layer different from the first layer and electrically connected to the plurality of magnetic detection element arrays (Figures 21,23), (Paragraphs [0087],[0096]), wherein the plurality of magnetic detection element arrays include a first magnetic detection element array (20a) and a second magnetic detection element array (20b) (Figure 23), and the first magnetic detection element array and the second magnetic detection element array are each configured of the same number of magnetic detection elements (Figure 23), and in a plane-normal direction from the second layer to the first layer, the number of magnetic detection elements of the first magnetic detection element array overlapping an outline of the wiring layer is substantially the same as the number of magnetic detection elements of the second magnetic detection element array overlapping the outline of the wiring layer (Figure 23 / note the sensor elements are overlapped by the wiring layer in the same way and by the same amount for both array 20a and array 20b). As to Claim 2, ‘932 discloses the first magnetic detection element array and the second magnetic detection element array are connected in series to each other (Figure 23 / note the elements are connected in the same manner as applicant and therefore must be in series) , with an output port (43) being interposed therebetween to form part of a bridge circuit (Figure 23) As to Claim 4, ‘932 discloses An angle sensor comprising the magnetic sensor device according to claim 1 (Paragraph [0091]), (Figure 23 / note the intent of this device is as an angle sensor, and further that because the device is reasonably capable of functioning as an angle sensor as it discloses all of the structural elements of the claim, it is reasonably an angle sensor). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. 1) US 2018/0246177 to Deak et al. which disclose a single-chip magnetoresistive sensor, 2) US 2010/0259257 to Sasaki et al. which discloses a magnetic sensor with wiring connectors, and 3) US 2014/0062472 to Nishikawa which discloses a magnetic sensor using connectors overlapping magnetic sensor elements. Any inquiry concerning this communication or earlier communications from the examiner should be directed to DAVID M. SCHINDLER whose telephone number is (571)272-2112. The examiner can normally be reached 8am-4:30pm. 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 at 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. DAVID M. SCHINDLER Primary Examiner Art Unit 2858 /DAVID M SCHINDLER/Primary Examiner, Art Unit 2858
Read full office action

Prosecution Timeline

Jun 14, 2024
Application Filed
Mar 28, 2026
Non-Final Rejection — §102 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12584769
INDUCTIVE POSITION SENSOR AND METHOD FOR DETECTING A MOVEMENT OF A CONDUCTIVE TARGET
2y 5m to grant Granted Mar 24, 2026
Patent 12578176
ANGLE SENSOR USING EDDY CURRENTS AND HAVING HARMONIC COMPENSATION
2y 5m to grant Granted Mar 17, 2026
Patent 12566171
DETERMINING A VOLUME OF METALLIC SWARF IN A WELLBORE FLUID
2y 5m to grant Granted Mar 03, 2026
Patent 12553961
STRAYFIELD INSENSITIVE MAGNETIC SENSING DEVICE AND METHOD USING SPIN ORBIT TORQUE EFFECT
2y 5m to grant Granted Feb 17, 2026
Patent 12535339
SCALE CONFIGURATION FOR INDUCTIVE POSITION ENCODER
2y 5m to grant Granted Jan 27, 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
41%
Grant Probability
64%
With Interview (+23.0%)
4y 3m
Median Time to Grant
Low
PTA Risk
Based on 599 resolved cases by this examiner. Grant probability derived from career allow rate.

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